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Fix types.GenericAlias lookup crash #17543

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Merged
JelleZijlstra merged 2 commits into from
Jul 20, 2024
Merged

Fix types.GenericAlias lookup crash #17543

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2ad4f48
Fix types.GenericAlias lookup crash
hauntsaninja Jul 20, 2024
9013272
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hauntsaninja Jul 20, 2024
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@hauntsaninja
hauntsaninja committed Jul 20, 2024
commit 90132728c71f8e95928e52180579aae643d3d094
20 changes: 17 additions & 3 deletions test-data/unit/check-functions.test
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Expand Up @@ -1779,6 +1779,7 @@ def Arg(x, y): pass
F = Callable[[Arg(int, 'x')], int] # E: Invalid argument constructor "__main__.Arg"

[case testCallableParsingFromExpr]
# flags: --python-version 3.9
from typing import Callable, List
from mypy_extensions import Arg, VarArg, KwArg
import mypy_extensions
Expand All @@ -1799,10 +1800,23 @@ L = Callable[[Arg(name='x', type=int)], int] # ok
# I have commented out the following test because I don't know how to expect the "defined here" note part of the error.
# M = Callable[[Arg(gnome='x', type=int)], int] E: Invalid type alias: expression is not a valid type E: Unexpected keyword argument "gnome" for "Arg"
N = Callable[[Arg(name=None, type=int)], int] # ok
O = Callable[[List[Arg(int)]], int] # E: Invalid type alias: expression is not a valid type # E: Value of type "int" is not indexable # E: Type expected within [...]
O = Callable[[List[Arg(int)]], int] # E: Invalid type alias: expression is not a valid type \
# E: Value of type "int" is not indexable \
# E: Type expected within [...]
P = Callable[[mypy_extensions.VarArg(int)], int] # ok
Q = Callable[[Arg(int, type=int)], int] # E: Invalid type alias: expression is not a valid type # E: Value of type "int" is not indexable # E: "Arg" gets multiple values for keyword argument "type"
R = Callable[[Arg(int, 'x', name='y')], int] # E: Invalid type alias: expression is not a valid type # E: Value of type "int" is not indexable # E: "Arg" gets multiple values for keyword argument "name"
Q = Callable[[Arg(int, type=int)], int] # E: Invalid type alias: expression is not a valid type \
# E: Value of type "int" is not indexable \
# E: "Arg" gets multiple values for keyword argument "type"
R = Callable[[Arg(int, 'x', name='y')], int] # E: Invalid type alias: expression is not a valid type \
# E: Value of type "int" is not indexable \
# E: "Arg" gets multiple values for keyword argument "name"







[builtins fixtures/dict.pyi]

[case testCallableParsing]
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