ImportWarning when importing aiohttp with warnings enabled

[Norrius]

Long story short

Importing aiohttp results in a lot of ImportWarnings.

While cleaning the app from warnings I noticed that a lot of them stem from aiohttp. To my surprise, simply importing the library results in 10 warning. Of these, DeprecationWarnings are addressed in #3275, but I don't see anything about ImportWarnings.

Expected behaviour

Expected no warnings on library import.

Actual behaviour

ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__

Steps to reproduce

$ python -Wall -c "import aiohttp"
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)
project_root/venv/lib/python3.7/site-packages/aiohttp/multipart.py:8: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  from collections import Mapping, Sequence, deque
project_root/venv/lib/python3.7/site-packages/aiohttp/multipart.py:8: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  from collections import Mapping, Sequence, deque
/usr/lib/python3.7/importlib/_bootstrap.py:219: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  return f(*args, **kwds)

Your environment

Linux Mint 18.3, Python 3.7.1, aiohttp 3.4.4.

[aio-libs-bot]

GitMate.io thinks the contributor most likely able to help you is @asvetlov.

Possibly related issues are #2301 (pyinstaller cannot import aiohttp), #276 (python crashes on aiohttp import), #2956 (Enable logging when aiohttp.web is used as a program), #2320 (aiohttp-jinja2), and #3044 (Uvloop raises a warning when I use aiohttp.test_utils.loop_context).

[asvetlov]

The problem is fixed on master.
Please wait for a new release

[Norrius]

Can confirm that latest master works for me. Thank you.

[lock]

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