_asdict returns OrderedDict in 3.1 and up

[Sterbic]

As per documentation here: https://docs.python.org/3.6/library/collections.html#collections.somenamedtuple._asdict

Changed in version 3.1: Returns an OrderedDict instead of a regular dict.

[JelleZijlstra]

Can you add type arguments (probably [str, Any])?

[Sterbic]

Added on the Dict block but for OrderedDict it crashes. Is there any workaround to allow typed OrderedDict?

[JelleZijlstra]

What do you mean by crashes? What errors do you get?

[Sterbic]

I think this would cause an exception as in the example below:

(.venv3) luka-mbp:typeshed luka$ cat test.py
from collections import OrderedDict

def new_dict() -> OrderedDict[str, str]:
    return OrderedDict()

print(new_dict())
(.venv3) luka-mbp:typeshed luka$ python3 test.py
Traceback (most recent call last):
  File "test.py", line 3, in <module>
    def new_dict() -> OrderedDict[str, str]:
TypeError: 'type' object is not subscriptable

[Sterbic]

@JelleZijlstra how do you want to proceed?

[JelleZijlstra]

I had written a comment here but I guess I forgot to post it.

It's true that OrderedDict with type arguments doesn't work at runtime, but they should work fine in stubs, because OrderedDict is generic in the stub.

[Sterbic]

Nice, didn't know that 👍