When using documentations tests to test a function that uses typing.get_type_hints, an error is thrown.

The error is thrown when trying to get the type hints for a class that was defined in a documentation test.

I was able to reproduce it both on current and PEP563 type annotations: https://gist.github.com/lovasoa/74ea62a89f5bf073b0e0c2f222008ae3

I think this is related to doc tests being executed in a namespace where the class definition is not available. I am not sure what is the best way here, a workaround is to explicitly pass the namespace, for example this passes:

import typing
  
def f(clazz, ns):
    """
    >>> class MyClass:
    ...   my_field: 'MyClass'
    >>> f(MyClass, globals())
    """
    typing.get_type_hints(clazz, ns)

You can maybe make the ns parameter optional, but it still doesn't look like a good solution.

I don't think there's an actionable bug here.

> I don't think there's an actionable bug here.

OK, then taking into account there is a decent workaround, I am closing this.

stage: resolved