Issues on Python 3.10 due to six 1.15.0

[fpgmaas]

importing chispa can cause issues on Python 3.10 due to the use of six 1.15.0. See also secdev/scapy#3502 and this blogpost. As the blogpost patches, the issue is patched in six 1.16.0.

[MrPowers]

Thanks for reporting this @fpgmaas.

Looks like we have the six dependency for six.moves.zip_longest.

I'm guessing that we can just add the zip_longest function to this project and get rid of the dependency altogether.

Or should be just be using itertools.zip_longest? Why do we even need six?

[fpgmaas]

Thanks for the quick feedback @MrPowers. I agree with you that seeing if the dependency can be removed altogether is cleaner. I can try to see if we can replace it with itertools.zip_longest and in that case open a PR.

[MrPowers]

Yea, six is a Python 2/3 compatibility library. chispa only supports Python >=3.7 now, so hopefully we can get rid of six.

[fpgmaas]

I think I'm able to fix this, however I am running into some issue with running the tests on newer version of Python. The version in .python_version is also a bit outdated. I will create a slightly larger PR that also proposes to drops support for Python 3.7 and updates some of the dev dependencies. Hopefully I have this done by the end of tomorrow :). Will keep you posted.