Bug summary

Hello,

Not really a bug, but I noticed that Python 3.12 introduced a new deprecation warning in the datetime module that affects Matplotlib users and dependent packages.

I could not find any related issue, so I wanted to point it out to you.

I actually run my tests with pytest -Werror so I had to filter out the warning with:
ignore:datetime\.datetime\.utcfromtimestamp\(\) is deprecated:DeprecationWarning to pass tests on Python 3.12 :-)

Code for reproduction

NA

Actual outcome

Deprecation warnings are raised.

Expected outcome

No deprecation warning

Additional information

No response

Operating system

No response

Matplotlib Version

3.8.2

Matplotlib Backend

No response

Python version

3.12

Jupyter version

No response

Installation

pip