iter_chunks type annotation wrong

[dfroger]

read_func is typed as returning Awaitable[bytes], but it seems to be rather Awaitable[Tuple[bytes, bool]] (but I don't know the aiohttp code so I'm not sure this is the correct type or if it's general enough).

This make the returned type of the public method iter_chunks to be wrong.

[dfroger]

Note: unpacking the return of iter_chunks, typed as bytes:

async for data, _ in response.content.iter_chunks():
    print(data)

makes strangely data typed as int* and _ typed as any.

[arthurdarcet]

@dfroger iter_chunks is correctly typed: you should iterate with async for data in response.content.iter_chunk()

[asvetlov]

iter_chunks returns (chunk, end_of_chunk) tuple.
The type hint is incorrect.

[asvetlov]

Fixed by #3232

[lock]

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[new issue]: https://github.com/aio-libs/aiohttp/issues/new