Format graphic_matroid.py

[gmou3]

Improve the formatting of graphic_matroid.py.

[tscrim]

Thank you for working to clean up the file. However, most of your changes actually make the file harder to understand the code and output. The 80 char/line can often be bad to follow rigidly, which can be seen by line splits with small output for just a few characters over. While we generally follow this more strictly for docstrings, there are good reasons to violate this at times for readability, especially when the html output doesn't require a horizontal scrollbar. So unfortunately I think most of these changes should be reverted.

Also, IMO, the strong avoidance of l because it could be confused with I thing only is an issue if both appear or there is ambiguity with what symbol it should mean. As such, calling labels ll instead of l doesn't actually fix the problem (why isn't it II instead?) but just makes the names longer and more confusing.

[gmou3]

I agree actually, I mostly wanted to remove the warnings that appeared on my editor. I think it is better now.

[tscrim]

I agree actually, I mostly wanted to remove the warnings that appeared on my editor. I think it is better now.

Please change your settings so those warning are disabled or find a new editor please (and launch the current one into the sun :) ). Most of these changes really are making the code harder to read. PEP8 allows this flexibility (in particular, one of the main points is make the code consistent).

[tscrim]

Thank you. One last little PEP8 thing since you are modifying the line.

[github-actions]

Documentation preview for this PR (built with commit 82bab29; changes) is ready! 🎉

[tscrim]

Thank you.