Upgrade from deprecated library to its replacement

[AlanCoding]

https://pypi.org/project/msgpack-python/

This package is deprecated. Install msgpack instead.

The problem I had is that I was getting unexpected import warnings. Replace locally with this project folder:

$ python -W error -c "from asgi_amqp import core"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/alancoding/Documents/repos/asgi_amqp/asgi_amqp/__init__.py", line 5, in <module>
    from .core import AMQPChannelLayer # noqa
  File "/Users/alancoding/Documents/repos/asgi_amqp/asgi_amqp/core.py", line 9, in <module>
    import msgpack
  File "/Users/alancoding/.virtualenvs/asgi_amqp_py3/lib/python3.6/site-packages/msgpack/__init__.py", line 25, in <module>
    from msgpack._packer import Packer
  File "msgpack/_packer.pyx", line 8, in init msgpack._packer
ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__

I would write a test for this, but unfortunately this is a warning that pytest itself filters out, and I can't find a way to un-suppress that warning.

After upgrading the dependency and re-installing, I do find that python -W error -c "from asgi_amqp import core" runs and exists without error.

[AlanCoding]

The reason I think this is a good idea is because kombu itself has moved to the new library:

https://github.com/celery/kombu/blob/master/setup.py#L122

The commit where this switch was made:

celery/kombu@9883a30

Kombu will still take an existing install of the old library as dependency resolution is done, but I want to upgrade to resolve the warning.

[wwitzel3]

👍

[wwitzel3]

msgpack-python is officially deprecated. Please review and merge this PR when there is time.

[AlanCoding]

now on 0.6.2

[wwitzel3]