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[3.13] gh-127750: Fix annotations in singledispatchmethod signature tests (GH-143571) (GH-143708)

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These tests relied on a bug -- gh-84644, which is that singledispatch
doesn't verify the annotation is on the "first" parameter.
(cherry picked from commit 620a5b9269)

Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>
This commit is contained in:
Miss Islington (bot) 2026-01-11 20:47:05 +01:00 • committed by GitHub
parent 18eeec4bea
commit ea1ecf6504
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1 changed files with 3 additions and 8 deletions
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11
Lib/test/test_functools.py
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@ -3151,16 +3151,11 @@ def _(item: int, arg: bytes) -> str:
def test_method_signatures(self):
class A:
def m(self, item, arg: int) -> str:
return str(item)
@classmethod
def cm(cls, item, arg: int) -> str:
return str(item)
@functools.singledispatchmethod
def func(self, item, arg: int) -> str:
return str(item)
@func.register
def _(self, item, arg: bytes) -> str:
def _(self, item: int, arg: bytes) -> str:
return str(item)
@functools.singledispatchmethod
@ -3169,7 +3164,7 @@ def cls_func(cls, item, arg: int) -> str:
return str(arg)
@func.register
@classmethod
def _(cls, item, arg: bytes) -> str:
def _(cls, item: int, arg: bytes) -> str:
return str(item)
@functools.singledispatchmethod
@ -3178,7 +3173,7 @@ def static_func(item, arg: int) -> str:
return str(arg)
@func.register
@staticmethod
def _(item, arg: bytes) -> str:
def _(item: int, arg: bytes) -> str:
return str(item)
self.assertEqual(str(Signature.from_callable(A.func)),