Warning

This project is being split into 3 separate projects:

• friendly_traceback,

• friendly, and

• friendly_idle.

The documentation does not reflect this change.

If you are a end-user, just install friendly until further notice.

# Friendly SyntaxError tracebacks - in English¶

Friendly aims to provide friendlier feedback when an exception is raised than what is done by Python. This file contains only examples of SyntaxError and its sub-classes. Some tests may appear to be repetitive to a human reader but they are may be included to ensure more complete test coverage..

Note

The content of this page is generated by running trb_syntax_english.py located in the tests/ directory. This needs to be done explicitly, independently of updating the documentation using Sphinx. On Windows, if Sphinx is installed on your computer, it is suggested instead to run make_trb.bat in the root directory as it will create similar files for all languages and update the documentation.

Friendly version: 0.3.142 Python version: 3.6.8

## (1) Using ‘and’ in import statement¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\and_in_import_statement.py", line 1
from math import sin and cos
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\and_in_import_statement.py'
beyond the location indicated by ^.

-->1: from math import sin and cos
^

The Python keyword and can only be used for boolean expressions.
Perhaps you meant to write

from math import sin , cos


## (2) Using ‘and’ after comma in import statement¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\and_in_import_statement_2.py", line 1
from math import sin, tan, and cos
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\and_in_import_statement_2.py'
beyond the location indicated by ^.

-->1: from math import sin, tan, and cos
^

The Python keyword and can only be used for boolean expressions.
Perhaps you meant to write

from math import sin, tan,  cos


## (3) Annotated name cannot be global¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\annotated_name_global.py", line 4
x:int = 1
^
SyntaxError: annotated name 'x' can't be global

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\annotated_name_global.py'
beyond the location indicated by ^.

1: # SyntaxError: annotated name 'x' can't be global
2: def foo():
3:     global x
-->4:     x:int = 1
^

The object named x is defined with type annotation
as a local variable. It cannot be declared to be a global variable.


## (4) Incorrect use of ‘from module import … as …¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
from math import (sin, cos) as funcs
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: # issue 158
-->2: from math import (sin, cos) as funcs
^

I am guessing that you are trying to import at least one object
from module math and rename it using the Python keyword as;
this keyword can only be used to rename one object at a time
using a well defined syntax.
I suggest that you split up any such import statement with each object
renamed on a separate line as follows:

from math import object_1 as name_1
from math import object_2 as name_2  # if needed


## (5) Name assigned prior to global declaration¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_name_before_global_1.py", line 7
global p
^
SyntaxError: name 'p' is assigned to before global declaration

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_name_before_global_1.py'
beyond the location indicated by ^.

3:
4:
5: def fn():
6:     p = 1
-->7:     global p
^

You assigned a value to the variable p
before declaring it as a global variable.


## (6) Name used prior to global declaration¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_name_before_global_2.py", line 7
global r
^
SyntaxError: name 'r' is used prior to global declaration

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_name_before_global_2.py'
beyond the location indicated by ^.

3:
4:
5: def fn():
6:     print(r)
-->7:     global r
^

You used the variable r
before declaring it as a global variable.


## (7) Name used prior to nonlocal declaration¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_name_before_nonlocal_1.py", line 9
nonlocal q
^
SyntaxError: name 'q' is used prior to nonlocal declaration

Did you forget to write nonlocal first?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_name_before_nonlocal_1.py'
beyond the location indicated by ^.

5:     q = 1
6:
7:     def g():
8:         print(q)
--> 9:         nonlocal q
^

You used the variable q
before declaring it as a nonlocal variable.


## (8) Name assigned prior to nonlocal declaration¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_name_before_nonlocal_2.py", line 9
nonlocal s
^
SyntaxError: name 's' is assigned to before nonlocal declaration

Did you forget to add nonlocal?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_name_before_nonlocal_2.py'
beyond the location indicated by ^.

5:     s = 1
6:
7:     def g():
8:         s = 2
--> 9:         nonlocal s
^

You assigned a value to the variable s
before declaring it as a nonlocal variable.


## (9) Assign to conditional expression¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_conditional.py", line 3
a if 1 else b = 1
^^^^^^^^^^^^^^^^^^-->
SyntaxError: can't assign to conditional expression

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_conditional.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't [cannot] assign to conditional expression"""
2:
-->3: a if 1 else b = 1
^

On the left-hand side of an equal sign, you have a
conditional expression instead of the name of a variable.
A conditional expression has the following form:

variable = object if condition else other_object


## (10) Assignment to keyword (__debug__)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_debug.py", line 4
__debug__ = 1
^^^^^^^^^^^^^^-->
SyntaxError: assignment to keyword

You cannot assign a value to __debug__.
A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_debug.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: cannot assign to __debug__ in Py 3.8
2:    and assignment to keyword before."""
3:
-->4: __debug__ = 1
^

__debug__ is a constant in Python; you cannot assign it a different value.


## (11) Assignment to keyword (__debug__)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_debug2.py", line 4
a.__debug__ = 1
^^^^^^^^^^^^^^^^-->
SyntaxError: assignment to keyword

You cannot assign a value to __debug__.
A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_debug2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: cannot assign to __debug__ in Py 3.8
2:    and assignment to keyword before."""
3:
-->4: a.__debug__ = 1
^

__debug__ is a constant in Python; you cannot assign it a different value.


## (12) Assignment to Ellipsis symbol¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_ellipsis.py", line 4
... = 1
^^^^^^^^-->
SyntaxError: can't assign to Ellipsis

You cannot assign a value to the ellipsis symbol [...].

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_ellipsis.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: cannot assign to Ellipsis in Py 3.8
2:    and assignment to keyword before."""
3:
-->4: ... = 1
^

The ellipsis symbol ... is a constant in Python;you cannot assign it a different value.


## (13) Cannot assign to f-string¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_f_string.py", line 6
f'{x}' = 42
^^^^^^^^^^^^-->
SyntaxError: can't assign to literal

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_f_string.py'
beyond the location indicated by ^.

1: """Should raise
2: Python < 3.8: SyntaxError: can't assign to literal
3: Python >= 3.8: SyntaxError: cannot assign to f-string expression
4: """
5:
-->6: f'{x}' = 42
^

You wrote an expression that has the f-string f'{x}'
on the left-hand side of the equal sign.
An f-string should only appear on the right-hand side of an equal sign.


## (14) Cannot assign to function call: single = sign¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_function_call_1.py", line 6
len('a') = 3
^^^^^^^^^^^^^-->
SyntaxError: can't assign to function call

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_function_call_1.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to function call
2:
3: Python 3.8: SyntaxError: cannot assign to function call
4: """
5:
-->6: len('a') = 3
^

You wrote the expression

len('a') = 3

where len('a'), on the left-hand side of the equal sign, either is
or includes a function call and is not simply the name of a variable.


## (15) Cannot assign to function call: two = signs¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_function_call_2.py", line 6
func(a, b=3) = 4
^^^^^^^^^^^^^^^^^-->
SyntaxError: can't assign to function call

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_function_call_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to function call
2:
3: Python 3.8: SyntaxError: cannot assign to function call
4: """
5:
-->6: func(a, b=3) = 4
^

You wrote an expression like

func(...) = some value

where func(...), on the left-hand side of the equal sign, is
a function call and not the name of a variable.


## (16) Assign to generator expression¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_generator.py", line 3
(x for x in x) = 1
^^^^^^^^^^^^^^^^^^^-->
SyntaxError: can't assign to generator expression

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_generator.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't [cannot] assign to generator expression"""
2:
-->3: (x for x in x) = 1
^

On the left-hand side of an equal sign, you have a
generator expression instead of the name of a variable.


## (17) Cannot assign to literal - 4¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_literal_dict.py", line 7
{1 : 2, 2 : 4} = 5
^^^^^^^^^^^^^^^^^^^-->
SyntaxError: can't assign to literal

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_literal_dict.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError:
2: Python 3.8: cannot assign to dict display
3: Python 3.6, 3.7: can't assign to literal
4:
5:  """
6:
-->7: {1 : 2, 2 : 4} = 5
^

You wrote an expression like

{1 : 2, 2 : 4} = 5
where {1 : 2, 2 : 4}, on the left-hand side of the equal sign,
is or includes an actual object of type dict
and is not simply the name of a variable.


## (18) Cannot assign to literal int¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_literal_int.py", line 3
1 = a
^^^^^^-->
SyntaxError: can't assign to literal

Perhaps you meant to write a = 1
A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_literal_int.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to literal"""
2:
-->3: 1 = a
^

You wrote an expression like

1 = a
where 1, on the left-hand side of the equal sign,
is or includes an actual object of type int
and is not simply the name of a variable.
Perhaps you meant to write:

a = 1


## (19) Cannot assign to literal int - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_literal_int_2.py", line 3
1 = 2
^^^^^^-->
SyntaxError: can't assign to literal

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_literal_int_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to literal"""
2:
-->3: 1 = 2
^

You wrote an expression like

1 = 2
where 1, on the left-hand side of the equal sign,
is or includes an actual object of type int
and is not simply the name of a variable.


## (20) Cannot assign to literal - 5¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_literal_int_3.py", line 4
1 = a = b
^^^^^^^^^^-->
SyntaxError: can't assign to literal

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_literal_int_3.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to literal
2: or (Python 3.8) cannot assign to literal"""
3:
-->4: 1 = a = b
^

You wrote an expression like

... = variable_name
where ..., on the left-hand side of the equal sign,
is or includes an actual object
and is not simply the name of a variable.


## (21) Cannot assign to literal - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_literal_set.py", line 7
{1, 2, 3} = 4
^^^^^^^^^^^^^^-->
SyntaxError: can't assign to literal

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_literal_set.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError:
2: Python 3.8: cannot assign to set display
3: Python 3.6, 3.7: can't assign to literal
4:
5:  """
6:
-->7: {1, 2, 3} = 4
^

You wrote an expression like

{1, 2, 3} = 4
where {1, 2, 3}, on the left-hand side of the equal sign,
is or includes an actual object of type set
and is not simply the name of a variable.


## (22) Assign to keyword def¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_keyword_def.py", line 3
def = 2
^
SyntaxError: invalid syntax

Python keywords cannot be used as identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_keyword_def.py'
beyond the location indicated by ^.

1: """ Should raise SyntaxError"""
2:
-->3: def = 2
^

You were trying to assign a value to the Python keyword def.
This is not allowed.


## (23) Assign to keyword else¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_keyword_else.py", line 3
else = 1
^
SyntaxError: invalid syntax

Python keywords cannot be used as identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_keyword_else.py'
beyond the location indicated by ^.

1: """ Should raise SyntaxError"""
2:
-->3: else = 1
^

You were trying to assign a value to the Python keyword else.
This is not allowed.


## (24) Assignment to keyword (None)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_keyword_none.py", line 4
None = 1
^^^^^^^^^-->
SyntaxError: can't assign to keyword

You cannot assign a value to None.
A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_keyword_none.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: cannot assign to None in Py 3.8
2:    and can't assign to keyword before."""
3:
-->4: None = 1
^

None is a constant in Python; you cannot assign it a different value.


## (25) Assign to math operation¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\assign_to_operation.py", line 4
a + 1 = 2
^^^^^^^^^^-->
SyntaxError: can't assign to operator

Perhaps you needed == instead of =.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\assign_to_operation.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to operator
2: or (Python 3.8) cannot assign to operator"""
3:
-->4: a + 1 = 2
^

You wrote an expression that includes some mathematical operations
on the left-hand side of the equal sign which should be
only used to assign a value to a variable.


## (26) def: missing parentheses¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\async_def_missing_parens.py", line 1
async def name:
^
SyntaxError: invalid syntax

Did you forget parentheses?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\async_def_missing_parens.py'
beyond the location indicated by ^.

-->1: async def name:
^

Perhaps you forgot to include parentheses.
You might have meant to write

async def name():


## (27) Augmented assignment to literal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\augmented_assignment_to_literal.py", line 1
if "word" := True:
^
SyntaxError: invalid syntax

The augmented assignment operator is not allowed in Python version 3.6.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\augmented_assignment_to_literal.py'
beyond the location indicated by ^.

-->1: if "word" := True:
^

You appear to be using the operator :=, sometimes called
the walrus operator. This operator requires the use of
Python 3.8 or newer. You are using version 3.6.


## (28) Walrus/Named assignment depending on Python version¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\augmented_assigment_with_true.py", line 4
(True := 1)
^
SyntaxError: invalid syntax

The augmented assignment operator is not allowed in Python version 3.6.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\augmented_assigment_with_true.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: or (Python 3.8) cannot use named assignment with True"""
3:
-->4: (True := 1)
^

You appear to be using the operator :=, sometimes called
the walrus operator. This operator requires the use of
Python 3.8 or newer. You are using version 3.6.


## (29) Backslash instead of slash¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a = 3 \ 4.0
^
SyntaxError: unexpected character after line continuation character

Did you mean to divide by 4.0?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: a = 3 \ 4.0
^

You are using the continuation character \ outside of a string,
and it is followed by some other character(s).
I am guessing that you wanted to divide by the number 4.0
and wrote \ instead of /.


## (30) break outside loop¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\break_outside_loop.py", line 4
break
^
SyntaxError: 'break' outside loop

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\break_outside_loop.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: 'break' outside loop"""
2:
3: if True:
-->4:     break
^

The Python keyword break can only be used inside a for loop or inside a while loop.


## (31) Cannot guess the cause¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\cannot_guess_the_cause.py", line 1
SyntaxErrors can be annoying!
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\cannot_guess_the_cause.py'
beyond the location indicated by ^.

-->1: SyntaxErrors can be annoying!
^

Currently, I cannot guess the likely cause of this error.
Try to examine closely the line indicated as well as the line
immediately above to see if you can identify some misspelled
word, or missing symbols, like (, ), [, ], :, etc.

Unless your code uses type annotations, which are beyond our scope,
if you think that this is something which should be handled
by friendly, please report this case to
https://github.com/aroberge/friendly/issues


## (32) Cannot use star operator¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\cannot_use_star.py", line 3
*a
^^^-->
SyntaxError: can't use starred expression here

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\cannot_use_star.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't use starred expression here"""
2:
-->3: *a
^

The star operator * is interpreted to mean that
iterable unpacking is to be used to assign a name
to each item of an iterable, which does not make sense here.


## (33) Cannot use double star operator¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\<fstring>", line 1
(**k)
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\<fstring>'
beyond the location indicated by ^.

-->1: (**k)
^

The double star operator ** is likely interpreted to mean that
dict unpacking is to be used which is not allowed or does not make sense here.


## (34) Missing class name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\class_missing_name.py", line 1
class:
^
SyntaxError: invalid syntax

A class needs a name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\class_missing_name.py'
beyond the location indicated by ^.

-->1: class:
^

A class statement requires a name:

class SomeName:
...


## (35) Missing () for tuples in comprehension¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\comprehension_missing_tuple_paren.py", line 1
x = [i, i**2 for i in range(10)]
^
SyntaxError: invalid syntax

Did you forget parentheses?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\comprehension_missing_tuple_paren.py'
beyond the location indicated by ^.

-->1: x = [i, i**2 for i in range(10)]
^

I am guessing that you were writing a comprehension or a generator expression
and forgot to include parentheses around tuples.
As an example, instead of writing

[i, i**2 for i in range(10)]

you would need to write

[(i, i**2) for i in range(10)]


## (36) Comprehension with condition (no else)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\comprehension_with_condition_no_else.py", line 1
a = [f(x) if condition for x in sequence]
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\comprehension_with_condition_no_else.py'
beyond the location indicated by ^.

-->1: a = [f(x) if condition for x in sequence]
^

I am guessing that you were writing a comprehension or a generator expression
and use the wrong order for a condition.
The correct order depends if there is an else clause or not.
For example, the correct order for a list comprehensions with
condition can be either

[f(x) if condition else other for x in sequence]  # 'if' before 'for'

or, if there is no else

[f(x) for x in sequence if condition]  # 'if' after 'for'


## (37) Comprehension with condition (with else)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\comprehension_with_condition_with_else.py", line 1
a = [f(x) for x in sequence if condition else other]
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\comprehension_with_condition_with_else.py'
beyond the location indicated by ^.

-->1: a = [f(x) for x in sequence if condition else other]
^

I am guessing that you were writing a comprehension or a generator expression
and use the wrong order for a condition.
The correct order depends if there is an else clause or not.
For example, the correct order for a list comprehensions with
condition can be either

[f(x) if condition else other for x in sequence]  # 'if' before 'for'

or, if there is no else

[f(x) for x in sequence if condition]  # 'if' after 'for'


## (38) continue outside loop¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\continue_outside_loop.py", line 4
continue
^
SyntaxError: 'continue' not properly in loop

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\continue_outside_loop.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: 'continue' outside loop"""
2:
3: if True:
-->4:     continue
^

The Python keyword continue can only be used inside a for loop or inside a while loop.


## (39) Copy/paste from interpreter¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\copy_pasted_code.py", line 2
>>> print("Hello World!")
^
SyntaxError: invalid syntax

Did you use copy-paste?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\copy_pasted_code.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: >>> print("Hello World!")
^

It looks like you copy-pasted code from an interactive interpreter.
The Python prompt, >>>, should not be included in your code.


## (40) Copy/paste from interpreter - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\copy_pasted_code_2.py", line 2
... print("Hello World!")
^
SyntaxError: invalid syntax

Did you use copy-paste?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\copy_pasted_code_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: ... print("Hello World!")
^

It looks like you copy-pasted code from an interactive interpreter.
The Python prompt, ..., should not be included in your code.


## (41) def: positional arg after kwargs¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_arg_after_kwarg.py", line 1
def test(a, **kwargs, b):
^
SyntaxError: invalid syntax

Positional arguments must come before keyword arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_arg_after_kwarg.py'
beyond the location indicated by ^.

-->1: def test(a, **kwargs, b):
^

Positional arguments must come before keyword arguments.
b is a positional argument that appears after one or more
keyword arguments in your function definition.


## (42) def: named arguments must follow bare *¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_bare_star_arg.py", line 4
def f(*):
^
SyntaxError: named arguments must follow bare *

Did you forget something after *?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_bare_star_arg.py'
beyond the location indicated by ^.

1: # SyntaxError: named arguments must follow bare *
2:
3:
-->4: def f(*):
^

Assuming you were defining a function, you need
to replace * by either *arguments or
by *, named_argument=value.


## (43) def: misused as code block¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_code_block.py", line 3
def :
^
SyntaxError: invalid syntax

A function needs a name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_code_block.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
-->3: def :
^

You tried to define a function and did not use the correct syntax.
The correct syntax is:

def name ( ... ):


## (44) def: misused as code block - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_code_block_2.py", line 2
def :
^
SyntaxError: invalid syntax

Functions and methods need a name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_code_block_2.py'
beyond the location indicated by ^.

1: class A:
-->2:     def :
^

You tried to define a function or method and did not use the correct syntax.
The correct syntax is:

def name ( ... ):


## (45) Dotted name as function argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_dotted_argument.py", line 3
def test(x.y):
^
SyntaxError: invalid syntax

Did you mean to write a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_dotted_argument.py'
beyond the location indicated by ^.

1:
2:
-->3: def test(x.y):
^

You cannot use dotted names as function arguments.
Perhaps you meant to write a comma.


## (46) Dotted name as function argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_dotted_argument_2.py", line 2
def test(x., y):
^
SyntaxError: invalid syntax

You cannot use dotted names as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_dotted_argument_2.py'
beyond the location indicated by ^.

1:
-->2: def test(x., y):
^

You cannot use dotted names as function arguments.


## (47) Dotted function name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_dotted_function_name.py", line 3
def test.x():
^
SyntaxError: invalid syntax

You cannot use dots in function names.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_dotted_function_name.py'
beyond the location indicated by ^.

1:
2:
-->3: def test.x():
^

You cannot use dots in function names.


## (48) def: dict as argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_dict_as_arg.py", line 1
def test({'a': 1}, y):  # dict as first argument
^
SyntaxError: invalid syntax

You cannot have any explicit dict or set as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_dict_as_arg.py'
beyond the location indicated by ^.

-->1: def test({'a': 1}, y):  # dict as first argument
^

You cannot have any explicit dict or set as function arguments.
You can only use identifiers (variable names) as function arguments.


## (49) def: Keyword arg only once in function definition¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_duplicate_arg.py", line 4
def f(aa=1, aa=2):
^^^^^^^^^^^^^^^^^^^-->
SyntaxError: duplicate argument 'aa' in function definition

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_duplicate_arg.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: duplicate argument 'aa' in function definition"""
2:
3:
-->4: def f(aa
^

You have defined a function repeating the keyword argument

aa
twice; each keyword argument should appear only once in a function definition.


## (50) def: semi-colon after colon¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_extra_semi_colon.py", line 1
def test():;
^
SyntaxError: invalid syntax

Did you write something by mistake after the colon?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_extra_semi_colon.py'
beyond the location indicated by ^.

-->1: def test():;
^

A function definition statement must end with a colon.
A block of code must come after the colon.
Removing ;, might fix the problem.


## (51) def: extra comma¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_extra_comma.py", line 1
def test(a,,b):
^
SyntaxError: invalid syntax

Did you mean to write ,?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_extra_comma.py'
beyond the location indicated by ^.

-->1: def test(a,,b):
^

I suspect you made a typo and added , by mistake.
The following statement contains no syntax error:

def test(a,b):


## (52) def: unspecified keywords before /¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_forward_slash_1.py", line 1
def test(a, **kwargs, /):
^
SyntaxError: invalid syntax

Function definitions cannot include the symbol / in this Python version.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_forward_slash_1.py'
beyond the location indicated by ^.

-->1: def test(a, **kwargs, /):
^

/ indicates that the previous arguments in a function definition
are positional arguments.
This symbol can only be used with Python versions 3.8.0 or newer.
You are using Python version 3.6.8.


## (53) def: / before star¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_forward_slash_2.py", line 1
def test(a, *, b, /):
^
SyntaxError: invalid syntax

Function definitions cannot include the symbol / in this Python version.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_forward_slash_2.py'
beyond the location indicated by ^.

-->1: def test(a, *, b, /):
^

/ indicates that the previous arguments in a function definition
are positional arguments.
This symbol can only be used with Python versions 3.8.0 or newer.
You are using Python version 3.6.8.


## (54) def: / before star arg¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_forward_slash_3.py", line 1
def test(a, *arg, /):
^
SyntaxError: invalid syntax

Function definitions cannot include the symbol / in this Python version.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_forward_slash_3.py'
beyond the location indicated by ^.

-->1: def test(a, *arg, /):
^

/ indicates that the previous arguments in a function definition
are positional arguments.
This symbol can only be used with Python versions 3.8.0 or newer.
You are using Python version 3.6.8.


## (55) def: / used twice¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_forward_slash_4.py", line 1
def test(a, /, b, /):
^
SyntaxError: invalid syntax

Function definitions cannot include the symbol / in this Python version.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_forward_slash_4.py'
beyond the location indicated by ^.

-->1: def test(a, /, b, /):
^

/ indicates that the previous arguments in a function definition
are positional arguments.
This symbol can only be used with Python versions 3.8.0 or newer.
You are using Python version 3.6.8.


## (56) def: non-identifier as a function name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_function_name_invalid.py", line 3
def 2be():
^
SyntaxError: invalid syntax

You wrote an invalid function name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_function_name_invalid.py'
beyond the location indicated by ^.

1:
2:
-->3: def 2be():
^

The name of a function must be a valid Python identifier,
that is a name that begins with a letter or an underscore character, _,
and which contains only letters, digits or the underscore character.


## (57) def: using a string as a function name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_function_name_string.py", line 3
def "function"():
^
SyntaxError: invalid syntax

The name of a function must be a valid Python identifier,
that is a name that begins with a letter or an underscore character, _,
and which contains only letters, digits or the underscore character.
You attempted to use a string as a function name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_function_name_string.py'
beyond the location indicated by ^.

1:
2:
-->3: def "function"():
^

The name of a function must be a valid Python identifier,
that is a name that begins with a letter or an underscore character, _,
and which contains only letters, digits or the underscore character.
You attempted to use a string as a function name.


## (58) def: keyword cannot be argument in def - 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_keyword_as_arg_1.py", line 5
def f(None=1):
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_keyword_as_arg_1.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: """
3:
4:
-->5: def f(None=1):
^

I am guessing that you tried to use the Python keyword
None as an argument in the definition of a function
where an identifier (variable name) was expected.


## (59) def: keyword cannot be argument in def - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_keyword_as_arg_2.py", line 5
def f(x, True):
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_keyword_as_arg_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: """
3:
4:
-->5: def f(x, True):
^

I am guessing that you tried to use the Python keyword
True as an argument in the definition of a function
where an identifier (variable name) was expected.


## (60) def: keyword cannot be argument in def - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_keyword_as_arg_3.py", line 5
def f(*None):
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_keyword_as_arg_3.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: """
3:
4:
-->5: def f(*None):
^

I am guessing that you tried to use the Python keyword
None as an argument in the definition of a function
where an identifier (variable name) was expected.


## (61) def: keyword cannot be argument in def - 4¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_keyword_as_arg_4.py", line 5
def f(**None):
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_keyword_as_arg_4.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: """
3:
4:
-->5: def f(**None):
^

I am guessing that you tried to use the Python keyword
None as an argument in the definition of a function
where an identifier (variable name) was expected.


## (62) def: Python keyword as function name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_keyword_as_name.py", line 3
def pass():
^
SyntaxError: invalid syntax

You cannot use a Python keyword as a function name.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_keyword_as_name.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: def pass():
^

You tried to use the Python keyword pass as a function name.


## (63) def: list as argument - 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_list_as_arg_1.py", line 1
def test([x], y):  # list as first argument
^
SyntaxError: invalid syntax

You cannot have explicit lists as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_list_as_arg_1.py'
beyond the location indicated by ^.

-->1: def test([x], y):  # list as first argument
^

You cannot have explicit lists as function arguments.
You can only use identifiers (variable names) as function arguments.


## (64) def: list as argument - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_list_as_arg_2.py", line 1
def test(x, [y]):  # list as second argument, after comma
^
SyntaxError: invalid syntax

You cannot have explicit lists as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_list_as_arg_2.py'
beyond the location indicated by ^.

-->1: def test(x, [y]):  # list as second argument, after comma
^

You cannot have explicit lists as function arguments.
You can only use identifiers (variable names) as function arguments.


## (65) def: missing colon¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_missing_colon.py", line 1
def test()
^
SyntaxError: invalid syntax

Did you forget to write a colon?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_missing_colon.py'
beyond the location indicated by ^.

-->1: def test()
^

A function definition statement must end with a colon.


## (66) def: missing comma between function args¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_missing_comma.py", line 4
def a(b, c d):
^
SyntaxError: invalid syntax

Did you forget a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_missing_comma.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
3:
-->4: def a(b, c d):
^

Python indicates that the error is caused by d written immediately after c.
It is possible that you forgot a comma between items in a tuple,
or between function arguments,
before the position indicated by ^.
Perhaps you meant

def a(b, c, d):


## (67) def: missing parentheses¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_missing_parens.py", line 3
def name:
^
SyntaxError: invalid syntax

Did you forget parentheses?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_missing_parens.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
-->3: def name:
^

Perhaps you forgot to include parentheses.
You might have meant to write

def name():


## (68) def: missing parentheses around arguments¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_missing_parens_2.py", line 2
def name a, b:
^
SyntaxError: invalid syntax

Did you forget parentheses?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_missing_parens_2.py'
beyond the location indicated by ^.

1:
-->2: def name a, b:
^

Perhaps you forgot to include parentheses.
You might have meant to write

def name (a, b):


## (69) def: missing function name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_missing_name.py", line 3
def ( arg )  :
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_missing_name.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
-->3: def ( arg )  :
^

You forgot to name your function.
The correct syntax is:

def name ( ... ):


## (70) def: name is parameter and global¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_name_is_parameter_and_global.py", line 6
global x
^
SyntaxError: name 'x' is parameter and global

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_name_is_parameter_and_global.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: name 'x' is parameter and global
2: """
3:
4:
5: def f(x):
-->6:     global x
^

You are including the statement

global x

indicating that x is a variable defined outside a function.
You are also using the same x as an argument for that
function, thus indicating that it should be variable known only
inside that function, which is the contrary of what global implied.


## (71) def: non-default argument follows default argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_non_default_after_default.py", line 5
def test(a=1, b):
^
SyntaxError: non-default argument follows default argument

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_non_default_after_default.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: non-default argument follows default argument
2: """
3:
4:
-->5: def test(a=1, b):
^

In Python, you can define functions with only positional arguments

def test(a, b, c): ...

or only keyword arguments

def test(a=1, b=2, c=3): ...

or a combination of the two

def test(a, b, c=3): ...

but with the keyword arguments appearing after all the positional ones.
According to Python, you used positional arguments after keyword ones.


## (72) Single number used as arg in function def¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_number_as_arg.py", line 1
def f(1):
^
SyntaxError: invalid syntax

You cannot use numbers as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_number_as_arg.py'
beyond the location indicated by ^.

-->1: def f(1):
^

You used a number as an argument when defining a function.
You can only use identifiers (variable names) as function arguments.


## (73) Operator after **¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_operator_after_2star.py", line 1
def test(**):
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_operator_after_2star.py'
beyond the location indicated by ^.

-->1: def test(**):
^

The ** operator needs to be followed by an identifier (variable name).


## (74) def: operator instead of comma¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
def test(a + b):
^
SyntaxError: invalid syntax

Did you mean to write a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: def test(a + b):
^

You cannot have operators as function arguments.
I suspect you made a typo and wrote + instead of a comma.
The following statement contains no syntax error:

def test(a , b):


## (75) def: operator instead of equal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
def test(a, b=3, c+None):
^
SyntaxError: invalid syntax

Did you mean to write an equal sign?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: def test(a, b=3, c+None):
^

You cannot have operators as function arguments.
I suspect you made a typo and wrote + instead of an equal sign.
The following statement contains no syntax error:

def test(a, b=3, c=None):


## (76) def: operator instead of name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
def test(a, +, b):
^
SyntaxError: invalid syntax

You cannot use + as an argument.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: def test(a, +, b):
^

I suspect you made a typo and wrote + by mistake.
If you replace it by a unique variable name, the result
will contain no syntax error.


## (77) def: positional argument follows keyword argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_positional_after_keyword_arg.py", line 5
test(a=1, b)
^
SyntaxError: positional argument follows keyword argument

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_positional_after_keyword_arg.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: positional argument follows keyword argument
2: """
3:
4:
-->5: test(a=1, b)
^

In Python, you can call functions with only positional arguments

test(1, 2, 3)

or only keyword arguments

test(a=1, b=2, c=3)

or a combination of the two

test(1, 2, c=3)

but with the keyword arguments appearing after all the positional ones.
According to Python, you used positional arguments after keyword ones.


## (78) def: semi-colon instead of colon¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
def test();
^
SyntaxError: invalid syntax

Did you forget to write a colon?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: def test();
^

A function definition statement must end with a colon.
You wrote ; instead of a colon.


## (79) def: set as argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_set_as_arg.py", line 1
def test(y, {'a', 'b'}):  # set as second argument, after comma
^
SyntaxError: invalid syntax

You cannot have any explicit dict or set as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_set_as_arg.py'
beyond the location indicated by ^.

-->1: def test(y, {'a', 'b'}):  # set as second argument, after comma
^

You cannot have any explicit dict or set as function arguments.
You can only use identifiers (variable names) as function arguments.


## (80) def: *arg before /¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_arg_before_slash.py", line 1
def test(a, *arg, /):
^
SyntaxError: invalid syntax

Function definitions cannot include the symbol / in this Python version.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_arg_before_slash.py'
beyond the location indicated by ^.

-->1: def test(a, *arg, /):
^

/ indicates that the previous arguments in a function definition
are positional arguments.
This symbol can only be used with Python versions 3.8.0 or newer.
You are using Python version 3.6.8.


## (81) def: * used twice¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_used_only_once.py", line 1
def test(a, *arg, *, b=1):
^
SyntaxError: invalid syntax

You can only use * once in a function definition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_used_only_once.py'
beyond the location indicated by ^.

-->1: def test(a, *arg, *, b=1):
^

You can only use * once in a function definition.
It must either be used by itself, *,
or in the form *arg, but not both.


## (82) def: * used twice¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_used_only_once_1.py", line 1
def test(a, *, *):
^
SyntaxError: invalid syntax

You can only use * once in a function definition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_used_only_once_1.py'
beyond the location indicated by ^.

-->1: def test(a, *, *):
^

You can only use * once in a function definition.


## (83) def: * used twice¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_used_only_once_2.py", line 1
def test(a, *arg, *other):
^
SyntaxError: invalid syntax

You can only use * once in a function definition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_used_only_once_2.py'
beyond the location indicated by ^.

-->1: def test(a, *arg, *other):
^

You can only use * once in a function definition.
You have used it twice, with *arg and *other.


## (84) def: * after **¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_after_2star.py", line 1
def test(**kw, *arg):
^
SyntaxError: invalid syntax

You can only use * once in a function definition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_after_2star.py'
beyond the location indicated by ^.

-->1: def test(**kw, *arg):
^

*arg must appear before **kw.


## (85) def: * after **¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_star_after_2star_2.py", line 1
def test(**kw, *):
^
SyntaxError: invalid syntax

You can only use * once in a function definition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_star_after_2star_2.py'
beyond the location indicated by ^.

-->1: def test(**kw, *):
^

**kw must appear after the * operator.


## (86) Single string used as arg in function def¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_string_as_arg.py", line 1
def f("1"):
^
SyntaxError: invalid syntax

You cannot use strings as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_string_as_arg.py'
beyond the location indicated by ^.

-->1: def f("1"):
^

You used a string as an argument when defining a function.
You can only use identifiers (variable names) as function arguments.


## (87) def: tuple as function argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_tuple_as_arg_1.py", line 1
def test((a, b), c):
^
SyntaxError: invalid syntax

You cannot have explicit tuples as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_tuple_as_arg_1.py'
beyond the location indicated by ^.

-->1: def test((a, b), c):
^

You cannot have explicit tuples as function arguments.
You can only use identifiers (variable names) as function arguments.
Assign any tuple to a parameter and unpack it
within the body of the function.


## (88) def: tuple as function argument - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\def_tuple_as_arg_2.py", line 1
def test(a, (b, c)):
^
SyntaxError: invalid syntax

You cannot have explicit tuples as function arguments.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\def_tuple_as_arg_2.py'
beyond the location indicated by ^.

-->1: def test(a, (b, c)):
^

You cannot have explicit tuples as function arguments.
You can only use identifiers (variable names) as function arguments.
Assign any tuple to a parameter and unpack it
within the body of the function.


## (89) Deleting constant/keyword¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\delete_constant_keyword.py", line 1
del True
^
SyntaxError: can't delete keyword

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\delete_constant_keyword.py'
beyond the location indicated by ^.

-->1: del True
^

You cannot delete the constant True.


## (90) Cannot delete function call¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\delete_function_call.py", line 5
del f(a)
^
SyntaxError: can't delete function call

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\delete_function_call.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't or cannot delete function call
2: """
3:
4:
-->5: del f(a)
^

You attempted to delete a function call

del f(a)
instead of deleting the function's name

del f


## (91) Deleting string literal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\delete_string_literal.py", line 1
del "Hello world!"
^
SyntaxError: can't delete literal

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\delete_string_literal.py'
beyond the location indicated by ^.

-->1: del "Hello world!"
^

You cannot delete the literal "Hello world!".
You can only delete the names of objects, or
individual items in a container.


## (92) Different operators in a row¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\different_operators_in_a_row.py", line 1
3 */ 4
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\different_operators_in_a_row.py'
beyond the location indicated by ^.

-->1: 3 */ 4
^

You cannot have these two operators, * and /,
following each other. Perhaps you wrote one of them by mistake
or forgot to write something between them.


## (93) Dot followed by parenthesis¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\dot_before_paren.py", line 3
print(len.('hello'))
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\dot_before_paren.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: Reported by Hackinscience."""
-->3: print(len.('hello'))
^

You cannot have a dot . followed by (.
Perhaps you need to replace the dot by a comma.


## (94) Extra token¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\duplicate_token.py", line 1
print(1 , , 2)
^
SyntaxError: invalid syntax

Did you write , twice by mistake?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\duplicate_token.py'
beyond the location indicated by ^.

-->1: print(1 , , 2)
^

I am guessing that you wrote , twice in a row by mistake.
If that is the case, you need to remove the second one.


## (95) Write elif, not else if¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
else if True:
^
SyntaxError: invalid syntax

Perhaps you meant to write elif.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
3: if False:
4:     pass
-->5: else if True:
^

You likely meant to use Python's elif keyword
but wrote else if instead.


## (96) Write elif, not elseif¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
elseif True:
^
SyntaxError: invalid syntax

Perhaps you meant to write elif.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
3: if False:
4:     pass
-->5: elseif True:
^

You likely meant to use Python's elif keyword
but wrote elseif instead.


## (97) EOL while scanning string literal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\eol_string_literal.py", line 3
alphabet = 'abc
^
SyntaxError: EOL while scanning string literal

Did you forget a closing quote?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\eol_string_literal.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: EOL while scanning string literal"""
2:
-->3: alphabet = 'abc
^

You started writing a string with a single or double quote
but never ended the string with another quote on that line.


Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
ages = {'Alice'=22, 'Bob'=24}
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax
2: """
3:
-->4: ages = {'Alice'=22, 'Bob'=24}
^

It is possible that you used an equal sign = instead of a colon :
to assign values to keys in a dict
before or at the position indicated by ^.


## (99) Parens around multiple exceptions¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\except_multiple_exceptions.py", line 3
except NameError, ValueError as err:
^
SyntaxError: invalid syntax

Did you forget parentheses?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\except_multiple_exceptions.py'
beyond the location indicated by ^.

1: try:
2:     pass
-->3: except NameError, ValueError as err:
^

I am guessing that you wanted to use an except statement
with multiple exception types. If that is the case, you must
surround them with parentheses.


## (100) Extra token¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\extra_token.py", line 1
print(1 / 2) ==
^
SyntaxError: invalid syntax

Did you write == by mistake?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\extra_token.py'
beyond the location indicated by ^.

-->1: print(1 / 2) ==
^

I am guessing that you wrote == by mistake.
Removing it and writing print(1 / 2) seems to fix the error.


## (101) Binary f-string not allowed¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\f_string_binary.py", line 1
greet = bf"Hello {name}"
^
SyntaxError: invalid syntax

bf is an illegal string prefix.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\f_string_binary.py'
beyond the location indicated by ^.

-->1: greet = bf"Hello {name}"
^

I am guessing that you wanted a binary f-string;
this is not allowed.


## (102) f-string: unterminated string¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\f_string_unterminated.py", line 4
print(f"Bob is {age['Bob]} years old.")
^
SyntaxError: f-string: unterminated string

Perhaps you forgot a closing quote.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\f_string_unterminated.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: f-string: unterminated string
2: """
3:
-->4: print(f"Bob is {age['Bob]} years old.")
^

Inside the f-string f"Bob is {age['Bob]} years old.",
you have another string, which starts with either a
single quote (') or double quote ("), without a matching closing one.


## (103) f-string with backslash¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\f_string_with_backslash.py", line 2
print(f"{'\n'.join(names)}")
^
SyntaxError: f-string expression part cannot include a backslash

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\f_string_with_backslash.py'
beyond the location indicated by ^.

1: names = ['a', 'b']
-->2: print(f"{'\n'.join(names)}")
^

You have written an f-string whose content {...}
includes a backslash; this is not allowed.
Perhaps you can replace the part that contains a backslash by
some variable. For example, suppose that you have an f-string like:

f"{... 'hello\n' ...}"

you could write this as

hello = 'hello\n'
f"{... hello ...}"


## (104) Missing terms in for statement¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\for_missing_terms.py", line 1
for:
^
SyntaxError: invalid syntax

A for loop requires at least 3 more terms.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\for_missing_terms.py'
beyond the location indicated by ^.

-->1: for:
^

A for loop is an iteration over a sequence:

for element in sequence:
...


## (105) Not a chance!¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\future_braces.py", line 1
from __future__ import braces
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-->
SyntaxError: not a chance

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\future_braces.py'
beyond the location indicated by ^.

-->1: from __future__ import braces
^

I suspect you wrote from __future__ import braces following
someone else's suggestion. This will never work.

Unlike other programming languages, Python's code block are defined by
their indentation level, and not by using some curly braces, like {...}.


## (106) Do not import * from __future__¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\future_import_star.py", line 1
from __future__ import *
^^^^^^^^^^^^^^^^^^^^^^^^^-->
SyntaxError: future feature * is not defined

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\future_import_star.py'
beyond the location indicated by ^.

-->1: from __future__ import *
^

When using a from __future__ import statement,
you must import specific named features.

The available features are nested_scopes,
generators,
division,
absolute_import,
with_statement,
print_function,
unicode_literals,
barry_as_FLUFL,
generator_stop.


## (107) __future__ at beginning¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\future_must_be_first.py", line 3
from __future__ import generators
^
SyntaxError: from __future__ imports must occur at the beginning of the file

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\future_must_be_first.py'
beyond the location indicated by ^.

1:
2: def fn():
-->3:     from __future__ import generators
^

A from __future__ import statement changes the way Python
interprets the code in a file.
It must appear at the beginning of the file.


## (108) Typo in __future__¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\future_typo.py", line 1
from __future__ import divisio
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-->
SyntaxError: future feature divisio is not defined

Did you mean division?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\future_typo.py'
beyond the location indicated by ^.

-->1: from __future__ import divisio
^

Instead of divisio, perhaps you meant to import division.


## (109) Unknown feature in __future__¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\future_unknown.py", line 1
from __future__ import something
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-->
SyntaxError: future feature something is not defined

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\future_unknown.py'
beyond the location indicated by ^.

-->1: from __future__ import something
^

something is not a valid feature of module __future__.

The available features are nested_scopes,
generators,
division,
absolute_import,
with_statement,
print_function,
unicode_literals,
barry_as_FLUFL,
generator_stop.


## (110) Parenthesis around generator expression¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\generator_expression_parens.py", line 6
f(x for x in L, 1)
^
SyntaxError: Generator expression must be parenthesized if not sole argument

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\generator_expression_parens.py'
beyond the location indicated by ^.

2: def f(it, *varargs, **kwargs):
3:     return list(it)
4:
5: L = range(10)
-->6: f(x for x in L, 1)
^

You are using a generator expression, something of the form

x for x in thing

You must add parentheses enclosing that expression.


## (111) Space between names¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a-b = 2
^^^^^^^^-->
SyntaxError: can't assign to operator

Did you mean a_b?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: """Should raise SyntaxError: can't assign to operator
2: or (Python 3.8) cannot assign to operator"""
3:
-->4: a-b = 2
^

You wrote an expression that includes some mathematical operations
on the left-hand side of the equal sign which should be
only used to assign a value to a variable.
Perhaps you meant to write a_b instead of a-b


## (112) Missing condition in if statement¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\if_missing_condition.py", line 1
if:
^
SyntaxError: invalid syntax

You forgot to add a condition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\if_missing_condition.py'
beyond the location indicated by ^.

-->1: if:
^

An if statement requires a condition:

if condition:
...


## (113) use j instead of i¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\imaginary_i.py", line 3
a = 3.0i
^
SyntaxError: invalid syntax

Did you mean 3.0j?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\imaginary_i.py'
beyond the location indicated by ^.

1: # SyntaxError: invalid syntax
2:
-->3: a = 3.0i
^

Valid names cannot begin with a number.
Perhaps you thought that i could be used to represent
the square root of -1. In Python, the symbol used for this is j
and the complex part is written as some_number immediately
followed by j, with no spaces in between.
Perhaps you meant to write 3.0j.


## (114) Import inversion: import X from Y¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\import_from.py", line 3
import pen from turtle
^
SyntaxError: invalid syntax

Did you mean from turtle import pen?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\import_from.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: import pen from turtle
^

You wrote something like

import pen from turtle

from turtle import pen


## (115) IndentationError: expected an indented block¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\indentation_error_1.py", line 4
pass
^
IndentationError: expected an indented block

An IndentationError occurs when a given line of code is
not indented (aligned vertically with other lines) as expected.

Python could not understand the code in the file
'TESTS:\syntax\indentation_error_1.py'
beyond the location indicated by ^.

1: '''Should raise IndentationError'''
2:
3: if True:
-->4: pass
^

The line identified above
was expected to begin a new indented block.


## (116) IndentationError: unexpected indent¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\indentation_error_2.py", line 4
pass
^
IndentationError: unexpected indent

An IndentationError occurs when a given line of code is
not indented (aligned vertically with other lines) as expected.

Python could not understand the code in the file
'TESTS:\syntax\indentation_error_2.py'
beyond the location indicated by ^.

1: '''Should raise IndentationError'''
2: if True:
3:     pass
-->4:       pass
^

The line identified above is more indented than expected.


## (117) IndentationError: unindent does not match …¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\indentation_error_3.py", line 5
pass
^
IndentationError: unindent does not match any outer indentation level

An IndentationError occurs when a given line of code is
not indented (aligned vertically with other lines) as expected.

Python could not understand the code in the file
'TESTS:\syntax\indentation_error_3.py'
beyond the location indicated by ^.

1: '''Should raise IndentationError'''
2:
3: if True:
4:       pass
-->5:     pass
^

The line identified above is less indented than expected.


## (118) IndentationError: missing continuation line¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\indentation_error_4.py", line 6
"c"
^
IndentationError: unexpected indent

An IndentationError occurs when a given line of code is
not indented (aligned vertically with other lines) as expected.

Python could not understand the code in the file
'TESTS:\syntax\indentation_error_4.py'
beyond the location indicated by ^.

2:
3: def f():
4:      s = "a"\
5:          "b"
-->6:          "c"
^

The line identified above is more indented than expected.

However, line 6, which is identified as having a problem,
consists of a single string which is also the case
for the preceding line.
Perhaps you meant to include a continuation character, \,
at the end of line 5.


## (119) Forgot ‘o’ for octal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
x = 01
^
SyntaxError: invalid token

Did you mean 0o1?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: x = 01
^

Perhaps you meant to write the octal number 0o1
and forgot the letter 'o', or perhaps you meant to write
a decimal integer and did not know that it could not start with zeros.


## (120) Integer with leading zeros¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
x = 000_123_456
^
SyntaxError: invalid token

Did you mean 123_456?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: x = 000_123_456
^

Perhaps you meant to write the integer 123_456


## (121) Invalid character in identifier¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_character_in_identifier.py", line 6
🤖 = 'Reeborg'
^
SyntaxError: invalid character in identifier

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_character_in_identifier.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid character in identifier
2: """
3:
4: # Robot-face character below
5:
-->6: 🤖 = 'Reeborg'
^

Python indicates that you used the unicode character 🤖
which is not allowed.


## (122) Invalid encoding¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_encoding.py", line 2, in <module>
compile(source, filename="example.py", mode="exec")
File "TESTS:\example.py", line 0
SyntaxError: encoding problem: utf8 with BOM

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\example.py'.

The encoding of the file was not valid.


Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a = 0x123g4
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: a = 0x123g4
^

It looks like you used an invalid character (g) in an hexadecimal number.

Hexadecimal numbers are base 16 integers that use the symbols 0 to 9
to represent values 0 to 9, and the letters a to f (or A to F)
to represent values 10 to 15.
In Python, hexadecimal numbers start with either 0x or 0X,
followed by the characters used to represent the value of that integer.


## (124) Valid names cannot begin with a number¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_identifier.py", line 3
36abc = 3
^
SyntaxError: invalid syntax

Valid names cannot begin with a number.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_identifier.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: 36abc = 3
^

Valid names cannot begin with a number.


## (125) Valid names cannot begin with a number - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_identifier_2.py", line 3
tau = 2pi
^
SyntaxError: invalid syntax

Perhaps you forgot a multiplication operator, 2 * pi.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_identifier_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: tau = 2pi
^

Valid names cannot begin with a number.
Perhaps you forgot a multiplication operator, 2 * pi.


## (126) Valid names cannot begin with a number - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_identifier_3.py", line 1
3job  # could be entered in a repl
^
SyntaxError: invalid syntax

Perhaps you forgot a multiplication operator, 3 * job.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_identifier_3.py'
beyond the location indicated by ^.

-->1: 3job  # could be entered in a repl
^

Valid names cannot begin with a number.
Perhaps you forgot a multiplication operator, 3 * job.

[Note: 3j * ob would also be valid
since 3j is a complex number.]


## (127) Valid names cannot begin with a number - 4¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_identifier_4.py", line 1
3job = 1
^
SyntaxError: invalid syntax

Valid names cannot begin with a number.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_identifier_4.py'
beyond the location indicated by ^.

-->1: 3job = 1
^

Valid names cannot begin with a number.


## (128) Valid names cannot begin with a number - 5¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_identifier_5.py", line 1
print(42java)
^
SyntaxError: invalid syntax

Perhaps you forgot a multiplication operator, 42 * java.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_identifier_5.py'
beyond the location indicated by ^.

-->1: print(42java)
^

Valid names cannot begin with a number.
Perhaps you forgot a multiplication operator, 42 * java.

[Note: 42j * ava would also be valid
since 42j is a complex number.]


## (129) Keyword can’t be an expression¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_keyword_argument.py", line 7
a = dict('key'=1)
^
SyntaxError: keyword can't be an expression

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_keyword_argument.py'
beyond the location indicated by ^.

1: """Should raise
2: Python < 3.8: SyntaxError: keyword can't be an expression
3: Python 3.8:  expression cannot contain assignment, perhaps you meant "=="?
4: """
5:
6:
-->7: a = dict('key'=1)
^

You likely called a function with a named argument:

a_function(invalid=something)

where invalid is not a valid variable name in Python
either because it starts with a number, or is a string,
or contains a period, etc.


## (130) Invalid octal number¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\invalid_octal.py", line 3
b = 0O1876
^
SyntaxError: invalid syntax

Did you made a mistake in writing an octal integer?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\invalid_octal.py'
beyond the location indicated by ^.

1:
2:
-->3: b = 0O1876
^

It looks like you used an invalid character (8) in an octal number.

Octal numbers are base 8 integers that only use the symbols 0 to 7
to represent values.
In Python, hexadecimal numbers start with either 0o or 0O,
(the digit zero followed by the letter o)
followed by the characters used to represent the value of that integer.


## (131) Inverted operators 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\inverted_operators.py", line 1
a =< 3
^
SyntaxError: invalid syntax

Did you write operators in an incorrect order?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\inverted_operators.py'
beyond the location indicated by ^.

-->1: a =< 3
^

It looks like you wrote two operators (= and <)
in the wrong order: =< instead of <=.


## (132) Inverted operators 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\inverted_operators_2.py", line 1
a =<* 3
^
SyntaxError: invalid syntax

Did you write operators in an incorrect order?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\inverted_operators_2.py'
beyond the location indicated by ^.

-->1: a =<* 3
^

It looks like you wrote two operators (= and <)
in the wrong order: =< instead of <=.

However, making such a change would still not correct
all the syntax errors in the code you wrote.


## (133) Keyword arg only once in function call¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\keyword_arg_repeated.py", line 4
^
SyntaxError: keyword argument repeated

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\keyword_arg_repeated.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError:  keyword argument repeated"""
2:
3:
^

You have called a function repeating the same keyword argument (ad).
Each keyword argument should appear only once in a function call.


## (134) Keyword as attribute¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\keyword_as_attribute.py", line 12
a.pass = 2
^
SyntaxError: invalid syntax

pass cannot be used as an attribute.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\keyword_as_attribute.py'
beyond the location indicated by ^.

8:
9: a = A()
10:
11: a.x = 1
-->12: a.pass = 2
^

You cannot use the Python keyword pass as an attribute.


## (135) lambda with parentheses around arguments¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\lambda_with_parens.py", line 2
x = lambda (a, b): a + b
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\lambda_with_parens.py'
beyond the location indicated by ^.

1:
-->2: x = lambda (a, b): a + b
^

lambda does not allow parentheses around its arguments.
This was allowed in Python 2 but it not allowed in Python 3.


## (136) lambda with tuple as argument¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\lambda_with_tuple_argument.py", line 2
x = lambda a, (b, c): a + b + b
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\lambda_with_tuple_argument.py'
beyond the location indicated by ^.

1:
-->2: x = lambda a, (b, c): a + b + b
^

You cannot have explicit tuples as arguments.
Assign any tuple to a parameter and unpack it
within the body of the function.


## (137) Assign to literal in for loop¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\literal_in_for_loop.py", line 1
for "char" in "word":
^
SyntaxError: can't assign to literal

You can only assign objects to identifiers (variable names).

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\literal_in_for_loop.py'
beyond the location indicated by ^.

-->1: for "char" in "word":
^

A for loop must have the form:

for ... in sequence:

where ... must contain only identifiers (variable names)
and not literals like "char".


## (138) IndentationError/SyntaxError depending on version¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_code_block.py", line 4
SyntaxError: unexpected EOF while parsing

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_code_block.py'
beyond the location indicated by ^.

1: '''Should raise SyntaxError: unexpected EOF while parsing'''
2:
3: for i in range(10):
-->4:
^

Python tells us that it reached the end of the file
and expected more content.


## (139) Missing colon - if¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_colon_if.py", line 3
if True
^
SyntaxError: invalid syntax

Did you forget a colon :?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_colon_if.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
-->3: if True
^

You wrote a statement beginning with
if but forgot to add a colon : at the end.


## (140) Missing colon - while¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_colon_while.py", line 3
while True  # a comment
^
SyntaxError: invalid syntax

Did you forget a colon :?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_colon_while.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError"""
2:
-->3: while True  # a comment
^

You wrote a while loop but
forgot to add a colon : at the end


## (141) Missing comma in a dict¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_comma_in_dict.py", line 5
'c': 3,
^
SyntaxError: invalid syntax

Did you forget a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_comma_in_dict.py'
beyond the location indicated by ^.

2:
3: a = {'a': 1,
4:      'b': 2
-->5:      'c': 3,
^
6: }

Python indicates that the error is caused by 'c' written immediately after 2.
It is possible that you forgot a comma between items in a set or dict
before the position indicated by ^.
Perhaps you meant

a = {'a': 1,
'b': 2,
'c': 3,
}


## (142) Missing comma between strings in a dict¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_comma_in_dict_2.py", line 4
'c': '3',
^
SyntaxError: invalid syntax

Did you forget a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_comma_in_dict_2.py'
beyond the location indicated by ^.

1:
2: a = {'a': '1',
3:      'b': '2'
-->4:      'c': '3',
^
5: }

I am guessing that you forgot a comma between two strings
when defining a dict.


a = {'a': '1',
'b': '2'
«,» 'c': '3',
}



## (143) Missing comma in a list¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_comma_in_list.py", line 3
a = [1, 2  3]
^
SyntaxError: invalid syntax

Did you forget something between 2 and 3?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_comma_in_list.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: a = [1, 2  3]
^

Python indicates that the error is caused by 3 written immediately after 2.
It is possible that you forgot a comma between items in a list
before the position indicated by ^.
Perhaps you meant to insert an operator like +, -, *
between 2 and 3.
The following lines of code would not cause any SyntaxError:

a = [1, 2,  3]
a = [1, 2 +  3]
a = [1, 2 -  3]
a = [1, 2 *  3]
Note: these are just some of the possible choices and that
some of them might raise other types of exceptions.


## (144) Missing comma in a set¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_comma_in_set.py", line 3
a = {1, 2  3}
^
SyntaxError: invalid syntax

Did you forget something between 2 and 3?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_comma_in_set.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: a = {1, 2  3}
^

Python indicates that the error is caused by 3 written immediately after 2.
It is possible that you forgot a comma between items in a set or dict
before the position indicated by ^.
Perhaps you meant to insert an operator like +, -, *
between 2 and 3.
The following lines of code would not cause any SyntaxError:

a = {1, 2,  3}
a = {1, 2 +  3}
a = {1, 2 -  3}
a = {1, 2 *  3}
Note: these are just some of the possible choices and that
some of them might raise other types of exceptions.


## (145) Missing comma in a tuple¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_comma_in_tuple.py", line 3
a = (1, 2  3)
^
SyntaxError: invalid syntax

Did you forget something between 2 and 3?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_comma_in_tuple.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: a = (1, 2  3)
^

Python indicates that the error is caused by 3 written immediately after 2.
It is possible that you forgot a comma between items in a tuple,
or between function arguments,
before the position indicated by ^.
Perhaps you meant to insert an operator like +, -, *
between 2 and 3.
The following lines of code would not cause any SyntaxError:

a = (1, 2,  3)
a = (1, 2 +  3)
a = (1, 2 -  3)
a = (1, 2 *  3)
Note: these are just some of the possible choices and that
some of them might raise other types of exceptions.


## (146) For loop missing ‘in’ operator¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_in_with_for.py", line 1
for x range(4):
^
SyntaxError: invalid syntax

Did you forget to write in?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_in_with_for.py'
beyond the location indicated by ^.

-->1: for x range(4):
^

It looks as though you forgot to use the keyword in
as part of a for statement. Perhaps you meant:

for x in range(4):


## (147) Missing parenthesis for range¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\missing_parens_for_range.py", line 1
for i in range 3:
^
SyntaxError: invalid syntax

Did you forget to write parenthesis?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\missing_parens_for_range.py'
beyond the location indicated by ^.

-->1: for i in range 3:
^

It looks as though you forgot to use to use parenthesis with range.
Perhaps you meant:

for i in range( 3):


## (148) Misspelled Python keyword¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\misspelled_keyword.py", line 2
is i in range(3):
^
SyntaxError: invalid syntax

Did you mean if i in range(3):?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\misspelled_keyword.py'
beyond the location indicated by ^.

1: i = 3
-->2: is i in range(3):
^

Perhaps you meant to write if and made a typo.
The correct line might be if i in range(3):


## (149) Name is global and nonlocal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\name_is_global_and_nonlocal.py", line 7
global xy
^
SyntaxError: name 'xy' is nonlocal and global

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\name_is_global_and_nonlocal.py'
beyond the location indicated by ^.

3: xy = 1
4:
5:
6: def f():
-->7:     global xy
^

You declared xy as being both a global and nonlocal variable.
A variable can be global, or nonlocal, but not both at the same time.


## (150) Name is parameter and nonlocal¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\name_is_param_and_nonlocal.py", line 5
nonlocal x
^
SyntaxError: name 'x' is parameter and nonlocal

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\name_is_param_and_nonlocal.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: name 'x' is parameter and nonlocal"""
2:
3:
4: def f(x):
-->5:     nonlocal x
^

You used x as a parameter for a function
before declaring it also as a nonlocal variable:
x cannot be both at the same time.


Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\no_binding_for_nonlocal.py", line 5
nonlocal ab
^
SyntaxError: no binding for nonlocal 'ab' found

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\no_binding_for_nonlocal.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: no binding for nonlocal 'ab' found"""
2:
3:
4: def f():
-->5:     nonlocal ab
^

You declared the variable ab as being a
nonlocal variable but it cannot be found.


Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\nonlocal_at_module.py", line 4
nonlocal cd
^^^^^^^^^^^^-->
SyntaxError: nonlocal declaration not allowed at module level

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\nonlocal_at_module.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError:  nonlocal declaration not allowed at module level"""
2:
3:
-->4: nonlocal cd
^

You used the nonlocal keyword at a module level.
The nonlocal keyword refers to a variable inside a function
given a value outside that function.


## (153) Same operator twice in a row¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\operator_twice_in_a_row.py", line 1
4****5
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\operator_twice_in_a_row.py'
beyond the location indicated by ^.

-->1: 4****5
^

You cannot have write the same operator, **, twice in a row.
Perhaps you wrote one of them by mistake
or forgot to write something between them.


## (154) Using pip from interpreter¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\pip_install_1.py", line 2
pip install friendly
^
SyntaxError: invalid syntax

Pip cannot be used in a Python interpreter.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\pip_install_1.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: pip install friendly
^

It looks as if you are attempting to use pip to install a module.
pip is a command that needs to run in a terminal,
not from a Python interpreter.


## (155) Using pip from interpreter 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\pip_install_2.py", line 2
python -m pip install friendly
^
SyntaxError: invalid syntax

Pip cannot be used in a Python interpreter.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\pip_install_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: python -m pip install friendly
^

It looks as if you are attempting to use pip to install a module.
pip is a command that needs to run in a terminal,
not from a Python interpreter.


## (161) Calling python from interpreter¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\python_interpreter.py", line 1
python -i friendly
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\python_interpreter.py'
beyond the location indicated by ^.

-->1: python -i friendly
^

I am guessing that you are attempting to use Python to run a program.
You must do so from a terminal and not from a Python interpreter.


## (162) problem with assigning a variable to Python¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\python_not_interpreter.py", line 1
python = a b
^
SyntaxError: invalid syntax

Did you forget something between a and b?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\python_not_interpreter.py'
beyond the location indicated by ^.

-->1: python = a b
^

Python indicates that the error is caused by b written immediately after a.
Perhaps you meant to insert an operator like +; -; *; ,
between a and b.
The following lines of code would not cause any SyntaxError:

python = a + b
python = a - b
python = a * b
python = a, b
Note: these are just some of the possible choices and that
some of them might raise other types of exceptions.


## (163) Quote inside a string¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\quote_inside_string.py", line 3
message = 'don't'
^
SyntaxError: invalid syntax

Perhaps you misplaced a quote.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\quote_inside_string.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: message = 'don't'
^

There appears to be a Python identifier (variable name)
immediately following a string.
I suspect that you were trying to use a quote inside a string
that was enclosed in quotes of the same kind.


## (164) Raising multiple exceptions¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\raise_multiple_exceptions.py", line 2
raise X, Y
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\raise_multiple_exceptions.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: raise X, Y
^

It looks like you are trying to raise an exception using Python 2 syntax.


## (165) Cannot use return outside function¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\return_outside_function.py", line 3
return
^^^^^^^-->
SyntaxError: 'return' outside function

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\return_outside_function.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: 'return' outside function"""
2:
-->3: return
^

You can only use a return statement inside a function or method.


## (166) Semi-colon instead of comma - 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a = [1, 2; 3]
^
SyntaxError: invalid syntax

Did you mean to write a comma?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: a = [1, 2; 3]
^

You wrote a semi-colon, ;, where a comma was expected.


## (167) Semi-colon instead of commas - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a = [1; 2; 3]
^
SyntaxError: invalid syntax

Did you mean to write commas?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: a = [1; 2; 3]
^

You wrote semi-colons, ;, where commas were expected.


## (168) Semi-colon instead of commas - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
a = [1; 2; 3];
^
SyntaxError: invalid syntax

Did you mean to write commas?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
beyond the location indicated by ^.

-->1: a = [1; 2; 3];
^

You wrote semi-colons, ;, where commas were expected.


## (169) Single = instead of double == with if¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\single_equal_with_if.py", line 3
if i % 2 = 0:
^
SyntaxError: invalid syntax

Perhaps you needed == instead of =.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\single_equal_with_if.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: for i in range(101):
-->3:     if i % 2 = 0:
^

You likely used an assignment operator = instead of an equality operator ==.


## (170) Single = instead of double == with elif¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\single_equal_with_elif.py", line 5
elif i % 2 = 0:
^
SyntaxError: invalid syntax

Perhaps you needed == instead of =.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\single_equal_with_elif.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: for i in range(101):
3:     if False:
4:         pass
-->5:     elif i % 2 = 0:
^

You likely used an assignment operator = instead of an equality operator ==.


## (171) Single = instead of double == with while¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\single_equal_with_while.py", line 4
while a = 1:
^
SyntaxError: invalid syntax

Perhaps you needed == instead of =.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\single_equal_with_while.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: a = 1
3:
-->4: while a = 1:
^

You likely used an assignment operator = instead of an equality operator ==.


## (172) Space between operators 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\space_between_operators_1.py", line 1
a = 2 * * 5
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\space_between_operators_1.py'
beyond the location indicated by ^.

-->1: a = 2 * * 5
^

You cannot have write the same operator, *, twice in a row.
Perhaps you wrote one of them by mistake
or forgot to write something between them.
Or perhaps you included a space by mistake between the two operators
and meant to write ** as a single operator.


## (173) Space between operators 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\space_between_operators_2.py", line 1
a / = b
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\space_between_operators_2.py'
beyond the location indicated by ^.

-->1: a / = b
^

You cannot have these two operators, / and =,
following each other. Perhaps you wrote one of them by mistake
or forgot to write something between them.
Or perhaps you included a space by mistake between the two operators
and meant to write /= as a single operator.


## (174) Space in variable name¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\space_in_variable_name.py", line 1
my name = André
^
SyntaxError: invalid syntax

Did you mean my_name?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\space_in_variable_name.py'
beyond the location indicated by ^.

-->1: my name = André
^

You cannot have spaces in identifiers (variable names).


## (175) Too many nested blocks¶

  File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\None", line TESTS:\None
SyntaxError: too many statically nested blocks

Seriously?

A SyntaxError occurs when Python cannot understand your code.

You cannot be serious!

In case this is a mistake in a real program, please
consider reducing the number of nested code blocks.


## (176) Triple-equal sign¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\triple_equal.py", line 3
x = y === z
^
SyntaxError: invalid syntax

Did you mean to use is instead of ===?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\triple_equal.py'
beyond the location indicated by ^.

1:
2:
-->3: x = y === z
^

You wrote three equal signs in a row which is allowed in some
programming languages, but not in Python. To check if two objects
are equal, use two equal signs, ==; to see if two names represent
the exact same object, use the operator is.


## (177) Unclosed bracket¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unclosed_bracket.py", line 7
print(foo())
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unclosed_bracket.py'
beyond the location indicated by ^.

3:
4: def foo():
5:     return [1, 2, 3
6:
--> 7: print(foo())
^

The opening square bracket [ on line 5 is not closed.

5:     return [1, 2, 3
^


## (178) Unclosed parenthesis - 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unclosed_paren_1.py", line 3
if x == 1:
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unclosed_paren_1.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: x = int('1'
-->3: if x == 1:
^
4:     print('yes')

The opening parenthesis ( on line 2 is not closed.

2: x = int('1'
^


## (179) Unclosed parenthesis - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unclosed_paren_2.py", line 3
d = a*a
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unclosed_paren_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: a = (b+c
-->3: d = a*a
^

The opening parenthesis ( on line 2 is not closed.

2: a = (b+c
^


## (180) Unclosed parenthesis - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unclosed_paren_3.py", line 7
if 2:
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unclosed_paren_3.py'
beyond the location indicated by ^.

4:     if 1:
5:         print(((123))
6:
-->7: if 2:
^
8:     print(123))

The opening parenthesis ( on line 5 is not closed.

5:         print(((123))
^
If this is incorrect, please report this case.


## (181) Unclosed parenthesis - 4¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unclosed_paren_4.py", line 4
def test():
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unclosed_paren_4.py'
beyond the location indicated by ^.

1: # equal number of ( and ) in file
2: print('hello'
3:
-->4: def
^

The opening parenthesis ( on line 2 is not closed.

2: print('hello'
^


## (182) Content passed continuation line character¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unexpected_after_continuation_character.py", line 5
print(\t)
^
SyntaxError: unexpected character after line continuation character

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unexpected_after_continuation_character.py'
beyond the location indicated by ^.

1: """Should raise
2: SyntaxError: unexpected character after line continuation character
3: """
4:
-->5: print(\t)
^

You are using the continuation character \ outside of a string,
and it is followed by some other character(s).
I am guessing that you forgot to enclose some content in a string.


## (183) Unexpected EOF while parsing¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unexpected_eof.py", line 8
SyntaxError: unexpected EOF while parsing

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unexpected_eof.py'
beyond the location indicated by ^.

3:
4: def foo():
5:     return [1, 2, 3,
6:
7: print(foo())
--> 8:
^

Python tells us that it reached the end of the file
and expected more content.

The opening square bracket [ on line 5 is not closed.

5:     return [1, 2, 3,
^


## (184) Invalid character (unicode quote)¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unicode_quote.py", line 3
a = « hello »
^
SyntaxError: invalid character in identifier

Did you mean to use a normal quote character, ' or "?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unicode_quote.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid character in identifier for Python <=3.8
2:    and  SyntaxError: invalid character '«' (U+00AB) in Python 3.9"""
-->3: a = « hello »
^

Did you use copy-paste?
Python indicates that you used the unicode character «
which is not allowed.
I suspect that you used a fancy unicode quotation mark
instead of a normal single or double quote for a string.


## (185) Unmatched closing curly bracket¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unmatched_closing_curly.py", line 6
3, 4,}}
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unmatched_closing_curly.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax for Python < 3.8
2:    otherwise, SyntaxError: unmatched ')'
3: """
4: a = {1,
5:     2,
-->6:     3, 4,}}
^

The closing curly bracket } on line 6 does not match anything.

6:     3, 4,}}
^


## (186) Unmatched closing parenthesis¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unmatched_closing_paren.py", line 6
3, 4,))
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unmatched_closing_paren.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax for Python < 3.8
2:    otherwise, SyntaxError: unmatched ')'
3: """
4: a = (1,
5:     2,
-->6:     3, 4,))
^

The closing parenthesis ) on line 6 does not match anything.

6:     3, 4,))
^


## (187) Mismatched brackets - 1¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unmatched_closing_bracket_1.py", line 2
x = (1, 2, 3]
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unmatched_closing_bracket_1.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
-->2: x = (1, 2, 3]
^

The closing square bracket ] on line 2 does not match the opening parenthesis ( on line 2.

2: x = (1, 2, 3]
^       ^


## (188) Mismatched brackets - 2¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unmatched_closing_bracket_2.py", line 4
3]
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unmatched_closing_bracket_2.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2: x = (1,
3:      2,
-->4:      3]
^

The closing square bracket ] on line 4 does not match the opening parenthesis ( on line 2.

2: x = (1,
^
4:      3]
^


## (189) Unmatched brackets - 3¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unmatched_closing_bracket_3.py", line 3
3]]
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unmatched_closing_bracket_3.py'
beyond the location indicated by ^.

1: x = [1,
2:      2,
-->3:      3]]
^

The closing square bracket ] on line 3 does not match anything.

3:      3]]
^


## (190) Unterminated triple quoted string¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unterminated_triple_quote_string.py", line 4
some_text = """In a land
populated by weird animals,
a ...
^
SyntaxError: EOF while scanning triple-quoted string literal

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unterminated_triple_quote_string.py'.

1: some_text =

You started writing a triple-quoted string but never wrote
the triple quotes needed to end the string.


## (191) TabError¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\tab_error.py", line 7
pass
^
TabError: inconsistent use of tabs and spaces in indentation

A TabError indicates that you have used both spaces
and tab characters to indent your code.
This is not allowed in Python.
Indenting your code means to have block of codes aligned vertically
by inserting either spaces or tab characters at the beginning of lines.
Python's recommendation is to always use spaces to indent your code.

Python could not understand the code in the file
'TESTS:\syntax\tab_error.py'
beyond the location indicated by ^.

3:
4:
5: def test_tab_error():
6:     if True:
-->7:       pass
^


## (192) EOL unescaped backslash¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\unescaped_backslash.py", line 1
a = "abc\"
^
SyntaxError: EOL while scanning string literal

Did you forget to escape a backslash character?

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\unescaped_backslash.py'
beyond the location indicated by ^.

-->1: a = "abc\"
^

You started writing a string with a single or double quote
but never ended the string with another quote on that line.
Perhaps you meant to write the backslash character, \
as the last character in the string and forgot that you
needed to escape it by writing two \ in a row.


## (193) Using the backquote character¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\use_backquote.py", line 3
a = 1
^
SyntaxError: invalid syntax

You should not use the backquote character.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\use_backquote.py'
beyond the location indicated by ^.

1: """Should raise SyntaxError: invalid syntax"""
2:
-->3: a = 1
^

You are using the backquote character.
Either you meant to write a single quote, ', or copied Python 2 code;
in this latter case, use the function repr(x).


## (194) Missing condition in while statement¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\while_missing_condition.py", line 1
while:
^
SyntaxError: invalid syntax

You forgot to add a condition.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\while_missing_condition.py'
beyond the location indicated by ^.

-->1: while:
^

A while loop requires a condition:

while condition:
...


## (195) Walrus operator does not exist - yet¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\syntax\walrus_does_not_exist.py", line 3
print(walrus := True)
^
SyntaxError: invalid syntax

The augmented assignment operator is not allowed in Python version 3.6.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\syntax\walrus_does_not_exist.py'
beyond the location indicated by ^.

1: """Prior to Python 3.8, this should raise SyntaxError: invalid syntax"""
2:
-->3: print(walrus := True)
^

You appear to be using the operator :=, sometimes called
the walrus operator. This operator requires the use of
Python 3.8 or newer. You are using version 3.6.


## (196) Debug-feature of f-string not supported¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\<fstring>", line 1
(a=)
^
SyntaxError: invalid syntax

Your Python version does not support this f-string feature.

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\<fstring>'
beyond the location indicated by ^.

-->1: (a=)
^

You are likely using a 'debug' syntax of f-strings introduced
in Python version 3.8. You are using version 3.6.


## (197) Cannot assign a value within an fstring¶

Traceback (most recent call last):
File "TESTS:\trb_syntax_common.py", line 49, in create_tracebacks
__import__(name)
File "TESTS:\<fstring>", line 1
(b=3)
^
SyntaxError: invalid syntax

A SyntaxError occurs when Python cannot understand your code.

Python could not understand the code in the file
'TESTS:\<fstring>'
beyond the location indicated by ^.

-->1: (b=3)
^

You are likely trying to assign a value within an f-string.
This is not allowed.