Property setter not accepted if not next to getter

The following code incorrectly raises an error:

class Config(object):

    @property
    def my_proprty(self):
        return None

    def _other(self):
        pass

    @my_proprty.setter
    def my_proprty(self, val):
        pass

Error:

mypytest.py: note: In class "Config":
mypytest.py:12: error: Callable[[Any], Any] has no attribute "setter"

Commenting out the _other method will fix the error.

Make mypy succeed with imports on master.py

#1713 has another example and some ideas.

What is the status of this issue? #1713 is closed as duplicate of this issue.

We don't have immediate plans for fix this issue, but we are happy to receive a PR.

I had missed that moving the setter next to getter solves the problem, which is good enough. Thanks for the update!

This also affects subclasses that override properties, e.g.:
class Parent(object):
    @property
    def foo(self):
        return "parent_foo"

class Child(Parent):
    @Parent.foo.getter
    def foo(self):
        return "child_foo"
mypy returns a "Callable[[Any], Any]" has no attribute "getter" error here. In this case, it's obviously not possible to move the two methods to be next to each other.

Thanks for posting this - also struggling with this. Is there any known workaround? Specifically I wanted to override a property setter.

"No attribute" along with "Untyped decorator" error.

class Cell(ABC):
    def __init__(self, value: int | None = None):
        ...

    @property
    def value(self) -> int | None:
        return self._value

class InputCell(Cell):
    @Cell.value.setter
    def value(self, value: int) -> None:
    	...

Running mypy with --strict generates:

react.py:28: error: "Callable[[Cell], int | None]" has no attribute "setter"  [attr-defined]
react.py:28: error: Untyped decorator makes function "value" untyped  [misc]

Line 28 happens to be the @Cell.value.setter.

RF: annotate entries.py, fix a string format in test

Workaround for python/mypy#1465

Enable type hint checking (#5956)

🏷️ Fixing mypy errors

Fix false positive when @Property getter and setter are non-adjacent

Add type hints

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Property setter not accepted if not next to getter #1465

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Property setter not accepted if not next to getter #1465

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ilevkivskyi commented on Jun 4, 2017

levsa commented on Aug 30, 2017

JukkaL commented on Aug 30, 2017

levsa commented on Aug 30, 2017

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samskiter commented on May 27, 2023

asarkar commented on Sep 23, 2023

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