APIView.headers type is missing

[sobolevn]

This line show that there's headers field in APIView class: https://github.com/encode/django-rest-framework/blob/5ce237e00471d885f05e6d979ec777552809b3b1/rest_framework/views.py#L494

Currently it is missing.

Related #74 and #75

[Goldziher]

Should be resolved, no?

[sobolevn]

It is still Any. Let's keep it in case someone might fix them to be more specific later.

[MarcinWieczorek]

default_response_headers is a Dict[str, str] as introduced in 9f49d5a. I think APIView.headers should be that too because of the default value. Those are HTTP headers which are text in the end and I'm not familiar with any usecases of passing anything but str to headers in django or drf.

[sobolevn]

@MarcinWieczorek PRs are welcome!

[MarcinWieczorek]

Sure, if you agree with that changing that to Dict[str, str] I'll do that soon.