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Give self argument the correct type when using check_untyped_defs - #7530
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ilevkivskyi
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| @classmethod | ||
| def bar(cls): | ||
| cls.baz() # E: "Type[Foo]" has no attribute "baz" | ||
| [builtins fixtures/classmethod.pyi] |
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I would add also tests for two other reported problems:
- An attribute initialized with
0in untyped__init__has revealed typeintin another untyped method - Descriptors also work as expected in untyped methods.
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Also, if an attribute is initialized to None in __init__ the inferred type should probably be either Optional[Any] or Any (the first one may generate many false positives). If an attribute is initialized to [], the inferred type should probably be List[Any], and I think that we shouldn't require a type annotation.
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As a data point: In my project I just introduced Thanks for this, though! I have some work ahead of me now, but it indeed seems to make mypy a lot more useful for codebases which aren't fully annotated yet. |
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…27445) Summary: `__iter__` methods are supposed to return iterators (https://docs.python.org/3/reference/datamodel.html#object.__iter__), but some of them are typed to return iterables, which is too general. This results in error messages such as `Iterable[Module[Any]]" has no attribute "__next__"` from Mypy. Technically this should also have caused a type error [here](https://github.com/pytorch/pytorch/blob/8f7020bbdbb5537bf1954cd252523cb17ab879b1/torch/nn/modules/container.py#L115), but due to a bug in Mypy type checking isn't working correctly in untyped methods (this will be fixed in the next release though: python/mypy#7530). Pull Request resolved: #27445 Reviewed By: lerks Differential Revision: D18113966 Pulled By: fmassa fbshipit-source-id: c6261ac866f86df4328e6d2fdfca0625aa2d2492
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…ytorch#27445) Summary: `__iter__` methods are supposed to return iterators (https://docs.python.org/3/reference/datamodel.html#object.__iter__), but some of them are typed to return iterables, which is too general. This results in error messages such as `Iterable[Module[Any]]" has no attribute "__next__"` from Mypy. Technically this should also have caused a type error [here](https://github.com/pytorch/pytorch/blob/bd49d877c803dc2bc0fe6e11bef482f1805a3aeb/torch/nn/modules/container.py#L115), but due to a bug in Mypy type checking isn't working correctly in untyped methods (this will be fixed in the next release though: python/mypy#7530). Pull Request resolved: pytorch#27445 Reviewed By: lerks Differential Revision: D18113966 Pulled By: fmassa fbshipit-source-id: c6261ac866f86df4328e6d2fdfca0625aa2d2492
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This is accomplished by updating the helper that constructs a callable type
from a func def to fill in the self argument.
This will make check_untyped_defs a lot more useful.