Accessing Python 3 type annotations for variables at runtime

Question

I would like to know if it's possible to access type annotations for variables at runtime the same way you can use the __annotations__ entry in inspect.getmembers() for methods and functions.

>>> a: Optional[str] = None
>>> type(a)
<class 'NoneType'>

>>> a: str = None
>>> type(a)
<class 'NoneType'>

Answer 1

locals() and globals() keep track of annotations of variables in the __annotations__ key.

>>> from typing import *
>>> a: Optional[int] = None
>>> locals()['__annotations__']
{'a': typing.Union[int, NoneType]}
>>> locals()['__annotations__']['a']
typing.Union[int, NoneType]
>>> 
>>> foo = 0
>>> bar: foo
>>> locals()['__annotations__']['bar']
0
>>>
>>> baz: List[str]
>>> locals()['__annotations__']['baz']
typing.List[str]