pandas 2.0 removals for NDFrame and subclasses

[hamdanal]

• Work on Version 2.0 Compatibility Tracker #624
• Tests added

Reference: https://pandas.pydata.org/docs/dev/whatsnew/v2.0.0.html#removal-of-prior-version-deprecations-changes

[Dr-Irv]

All looks good - don't understand the change in the tests.

[Dr-Irv]

So the issue with needing pytest.warns() is that matplotlib got updated to version 3.9.0, which causes the warning. See pandas-dev/pandas#58851 for a bug report that I filed as a result.

Rather than add the pytest.warns() here and in your other PR's, can you change pyproject.toml to reflect a restriction on matplotlib:

matplotlib = "3.8.4"

And change the pyright version to be >= 1.1.364 since that was used in your tests and why you had to make that change for aggregate()

You'll have to do this in all 4 PR's

[Dr-Irv]

Thanks @hamdanal