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Use __init__ if we have it instead of the actual type. #20208

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Use __init__ if we have it instead of the actual type. #20208

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5b46b6a
use abspath if path not provided to preserve symlinks
noobCodec Nov 1, 2025
ed09c46
update message to use __init__
noobCodec Nov 8, 2025
f855451
reintroduce space
noobCodec Nov 8, 2025
60ae2f0
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Nov 8, 2025
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9 changes: 8 additions & 1 deletion mypy/messages.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3015,7 +3015,14 @@ def [T <: int] f(self, x: int, y: T) -> None
if s:
s = ", " + s
s = first_arg + s
s = f"{tp.name.split()[0]}({s})" # skip "of Class" part
if (
isinstance(definition, FuncDef)
and hasattr(definition, "name")
and definition.name == "__init__"
):
s = f"{definition.name}({s})"
else:
s = f"{tp.name.split()[0]}({s})" # skip "of Class" part
else:
s = f"({s})"

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2 changes: 1 addition & 1 deletion mypy/test/config.py
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Expand Up @@ -6,7 +6,7 @@
if provided_prefix:
PREFIX = provided_prefix
else:
this_file_dir = os.path.dirname(os.path.realpath(__file__))
this_file_dir = os.path.dirname(os.path.abspath(__file__))
PREFIX = os.path.dirname(os.path.dirname(this_file_dir))

# Location of test data files such as test case descriptions.
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4 changes: 2 additions & 2 deletions test-data/unit/check-serialize.test
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Expand Up @@ -312,8 +312,8 @@ class A:
[out2]
tmp/a.py:2: error: No overload variant of "A" matches argument type "object"
tmp/a.py:2: note: Possible overload variants:
tmp/a.py:2: note: def A(self, x: int) -> A
tmp/a.py:2: note: def A(self, x: str) -> A
tmp/a.py:2: note: def __init__(self, x: int) -> A
tmp/a.py:2: note: def __init__(self, x: str) -> A
tmp/a.py:7: error: No overload variant of "__init__" of "A" matches argument type "object"
tmp/a.py:7: note: Possible overload variants:
tmp/a.py:7: note: def __init__(self, x: int) -> None
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