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Reassigned @property is typed as Callable #13975
Description
Bug Report
Mypy seems to forget about the @property decorator if the property is aliased.
To Reproduce
class MyClass:
def error(self) -> bool:
# Incompatible return value type (got "Callable[[], bool]", expected "bool") [return-value]
return self.prop_alias
def works(self) -> bool:
# No error
return self.prop
@property
def prop(self) -> bool:
return True
prop_alias = prop
some_boolean: bool
instance = MyClass()
# Incompatible types in assignment (expression has type "Callable[[], bool]", variable has type "bool") [assignment]
some_boolean = instance.prop_alias
# No error
some_boolean = instance.propExpected Behavior
prop_alias should be usable as a boolean, just like prop
Actual Behavior
prop_alias is seen as a Callable
Your Environment
- Mypy version used: 0.982 (compiled: yes)
- Mypy command-line flags: None
- Mypy configuration options from
mypy.ini(and other config files):
[mypy]
show_error_codes = True
strict = False
namespace_packages = True- Python version used: 3.9.13
Activity
[-]`@property` alias is typed as `Callable`[/-][+]Reassigend `@property` is typed as `Callable`[/+][-]Reassigend `@property` is typed as `Callable`[/-][+]Reassigned `@property` is typed as `Callable`[/+]niklasmohrin commentedon Jan 16, 2023
Same behavior on
without config. Result:
finite-state-machine commentedon Jan 26, 2024
Issue is confirmed to affect both 1.8 and master.
mypy-play.net gist
finite-state-machine commentedon Jan 26, 2024
This might be the same as #6700.
Avasam commentedon Jan 26, 2024
You are right. Closing as duplicate
Update mypy issue reference to duplicated original issue
Update mypy issue reference to duplicated original issue (#11320)