where does the annotation for a member variable live

Question

if i do something like this:

def f(x: str):
    pass

i can easily see this type hint for x if i do:

print(f.__annotations__)

however, i can't seem to figure out where the annotations live if i do something like this:

class C:
    def __init__(self):
        self.where_is_this_vars_annotation_stored: int = 4

does anyone know which __annotations__ dict contains where_is_this_vars_annotation_stored's type hint?

[`__annotations__` does not exist under class](https://docs.python.org/3/library/inspect.html#types-and-members). Perhaps there's a workaround for it. — r.ook, Feb 26 '18 at 21:54
`__annotations__` does exist if you do something like `class C: i: int` — acushner, Feb 26 '18 at 21:57
Interesting, perhaps I wasn't looking deep enough. It seems classes will create `__annotations__` to the mapping when there's annotated class attributes, but not for instance attributes which is what you're looking for. — r.ook, Feb 26 '18 at 22:26

score 0 · Answer 1 · answered Jul 28 '18 at 00:03

0

i ended up writing something that uses inspect, ast, exec, and eval to solve this for me.

answered Jul 28 '18 at 00:03

acushner

1 Answers1