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false-positivemypy gave an error on correct codemypy gave an error on correct codefeaturepriority-1-normaltopic-descriptorsProperties, class vs. instance attributesProperties, class vs. instance attributes
Description
I'm running mypy on the following code: (no additional arguments)
class Base:
def __init__(self, value):
self._value = value
@property
def value(self):
return self._value
class Sub(Base):
@Base.value.setter
def value(self, value):
self._value = value
And it reports:
inherited_property.py:10: error: "Callable[[Any], Any]" has no attribute "setter"
Line 10 is @Base.value.setter
, so it seems to have a problem with referring to a property defined in a different class. Python itself has no problem with this though.
If the property has a setter in the base class, a slightly different error is reported:
class Base:
def __init__(self, value):
self._value = value
@property
def value(self):
return self._value
@value.setter
def value(self, value):
self._value = value
class Sub(Base):
@Base.value.setter
def value(self, value):
self._value = value
This results in mypy reporting:
inherited_property.py:14: error: overloaded function has no attribute "setter"
Again the error is reported on the @Base.value.setter
line.
I'm using a mypy dev snapshot (0.650+) on Python 3.6.5.
I found the existing issue #220, but that is so generic that I figured it would make sense to open a new separate issue for tracking this specific use case.
ZdenekM, sabattle, Rocamonde, spjrice, AlexWaygood and 9 more
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false-positivemypy gave an error on correct codemypy gave an error on correct codefeaturepriority-1-normaltopic-descriptorsProperties, class vs. instance attributesProperties, class vs. instance attributes