Codebase Refactor

[HighnessAtharva]

After glancing over the codebase, I came across code blocks that could be refactored to make them more maintainable and easier to read. Also, some refactors can make the code more "Pythonic". and performant. I have a few ideas in mind and most of them are:-

• using if expressions than if conditions
• list comprehensions instead of a for loop for smaller logical blocks.
• Usage of f-strings ( I saw that the env supports 3.4 but f-strings have been added from Python 3.6). So should I refactor this?
• Simplifying if/else code blocks to be more concise.
• Merge nested conditional clauses.

Please let me know what Python version should be supported for these refactors and I'll get to work on it.

[HighnessAtharva]

If possible, I think we should lift minimum Python version requirement to 3.6/3.7 since we can really improve the readability and efficiency of the code.

[stephanebruckert]

I think these are all great suggestions for #652

v3 has its own branch. I would recommend that you use https://github.com/spotipy-dev/spotipy/tree/v3 and open a PR against it.

About the python support, it should be fair to only support >= 3.8 as 3.7 security support ends in June 2023 https://endoflife.date/python, so feel free to use f-strings.

Thanks for any contribution!

PS: that v3 branch is a bit out of sync with the main branch, as it needs a rebase which I have in progress. Just to let you know that conflicts may arise, but we will have all the time to fix them.

[HighnessAtharva]

Glad to heart that. I'll start working and make a PR on the v3 branch soon!