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[3.11] gh-110696: Fix incorrect syntax error message for incorrect argument unpacking (GH-110706)#110766

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Merged
pablogsal merged 2 commits intopython:3.11frompablogsal:backport-3d18034-3.11
Oct 18, 2023
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fixup! [3.11]gh-110696: Fix incorrect syntax error message for incor…
…rect argument unpacking (GH-110706) (cherry picked from commit3d18034)
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@pablogsal
pablogsal committedOct 13, 2023
commitf0280859056807d1f08f975860897796269d39bc
140 changes: 6 additions & 134 deletionsLib/test/test_syntax.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -1827,145 +1827,17 @@ def f(x: *b)
^^^^^^^^^^^
SyntaxError: bytes can only contain ASCII literal characters

<<<<<<< HEAD
||||||| parent of 3d180347ae7 (gh-110696: Fix incorrect syntax error message for incorrect argument unpacking (#110706))
Invalid expressions in type scopes:

>>> type A[T: (x:=3)] = int
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a TypeVar bound

>>> type A[T: (yield 3)] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound

>>> type A[T: (await 3)] = int
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a TypeVar bound

>>> type A[T: (yield from [])] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound

>>> type A = (x := 3)
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a type alias

>>> type A = (yield 3)
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias

>>> type A = (await 3)
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a type alias

>>> type A = (yield from [])
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias

>>> class A[T]((x := 3)): ...
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within the definition of a generic

>>> class A[T]((yield 3)): ...
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic

>>> class A[T]((await 3)): ...
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within the definition of a generic

>>> class A[T]((yield from [])): ...
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic

=======
Invalid expressions in type scopes:

>>> type A[T: (x:=3)] = int
>>> f(**x, *y)
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a TypeVar bound

>>> type A[T: (yield 3)] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound

>>> type A[T: (await 3)] = int
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a TypeVar bound

>>> type A[T: (yield from [])] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound

>>> type A = (x := 3)
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a type alias

>>> type A = (yield 3)
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias

>>> type A = (await 3)
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a type alias
SyntaxError: iterable argument unpacking follows keyword argument unpacking

>>>type A = (yield from [])
>>>f(**x, *)
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias

>>> class A[T]((x := 3)): ...
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within the definition of a generic

>>> class A[T]((yield 3)): ...
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic

>>> class A[T]((await 3)): ...
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within the definition of a generic
SyntaxError: iterable argument unpacking follows keyword argument unpacking

>>>class A[T]((yield from [])): ...
>>>f(x, *:)
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic

>>> f(**x, *y)
Traceback (most recent call last):
SyntaxError: iterable argument unpacking follows keyword argument unpacking

>>> f(**x, *)
Traceback (most recent call last):
SyntaxError: iterable argument unpacking follows keyword argument unpacking

>>> f(x, *:)
Traceback (most recent call last):
SyntaxError: invalid syntax
>>>>>>> 3d180347ae7 (gh-110696: Fix incorrect syntax error message for incorrect argument unpacking (#110706))
SyntaxError: invalid syntax
"""

import re
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