Tools/LogAnalyzer: fix and update loganalyzer

[mentonin]

This PR updates LogAnalyzer, removing deprecated code, fixing incompatibilities with Python 3. It also formats the files with black.

[peterbarker]

Do we really need to change every instance of ' to "?! What's the reasoning?

If this is flake8-clean afterwards we should label it as such so it stays that way with AP_FLAKE8_CLEAN in a comment near the top.

This script has to continue to work with Python2.

[rmackay9]

Nice to some the log analyser getting some love!

[timtuxworth]

This script has to continue to work with Python2.

Why? Python2 sunsetted more than 2 years ago? https://www.python.org/doc/sunset-python-2/

[mentonin]

Do we really need to change every instance of ' to "?! What's the reasoning?

I ran it through black, because pyproject.toml makes me think it is the standard formatter for the project. According to The Black code style:

The main reason to standardize on a single form of quotes is aesthetics. Having one kind of quotes everywhere reduces reader distraction. It will also enable a future version of Black to merge consecutive string literals that ended up on the same line (see #26 for details).

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If this is flake8-clean afterwards we should label it as such so it stays that way with AP_FLAKE8_CLEAN in a comment near the top.

I rechecked and there are only a few violations of line length on comments and docstrings (it looks like I had E501 disabled in a config file somewhere). Will fix. Should I label it in the file docstring or in a comment (existing code has examples of both styles).

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This script has to continue to work with Python2.

I can try to fix it, but is it really necessary? Python2 has been deprecated for a while now, and supporting both is going to be increasingly complex as time goes on.

[peterbarker]

Merged, thanks!