feat: replace lib imports by importlib

[Andromelus]

Goal: fix #191
I am using an alternate laptop for this and cannot run the tests. 😞

[tjni]

I was looking at this too and noticed that importlib is not available in Python 2.7 so the import needs to be conditional if that version still needs to be supported.

Disclaimer: I'm not affiliated with this project so can't facilitate this getting in.

[Andromelus]

@tjni Indeed, that may be usefull. I'll have a look into it this week.

Concerning the build fail, checking on Internet, seems like Python 3.6 is not available for the latest version of Ubuntu.

[Andromelus]

There are some inconsistent behavior with the tests. Sometimes it works, sometimes it does not (it mostly does not). I'm looking into it.

For example: https://github.com/Andromelus/hdfs/actions/runs/4223653951/jobs/7333640441

[Andromelus]

@tjni The test framework only supports Python 3, not bellow. Therefore I will keep the tests on python 3.6 and 3.12.

[Andromelus]

Well, more news. fastavro does not support Python 3.12...

[Andromelus]

Hello @mtth ,

do you plan to keep maintaining this library ?

[mtth]

Thank you for the PR @Andromelus and apologies for the very belated review. This importlib change sounds good. A few comments inline.

[Andromelus]

Thank you for the PR @Andromelus and apologies for the very belated review. This importlib change sounds good. A few comments inline.

No problem. Glad to hear back from you.
Will work on it before sunday.

[Andromelus]

Changed. Tests passed on my fork.

[mtth]

Thanks for the update @Andromelus, looks good.

[musicinmybrain]

This is still broken; there is no importlib.load_source in Python 3.12 either. One other project handled it like this: return42/fspath@f09288e