[issue31861] aiter() and anext() built-in functions

[Davide Rizzo]

Davide Rizzo <sorcio at gmail.com> added the comment:

I attempted to make a Python implementation (attached) to use in my code. There are a few questions in the comments.

One of the complications is the async equivalent of next with two arguments like next(iterator, default). It cannot return the result of __anext__() because it needs to catch StopAsyncIteration. So it should return an awaitable wrapper instead (in my Python code this is rendered as a coroutine). A secondary question is whether the default value should be returned as it is passed, or awaited on.

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Added file: https://bugs.python.org/file47242/aiter_comp.py

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