Matthew Roeschke

- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). The goal is to eventually enable the `EX01` (all docstrings have examples), so adding simple examples to the public frequency classes and methods.

REF: PandasColumn.describe_categorical returns categores instead of mapping

1

- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature - [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). xref: https://github.com/data-apis/dataframe-api/pull/69 cc @shwina @vnlitvinov

REF: Change _NULL_DESCRIPTION[datetime] to use NaT sentinel

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- [x] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature - [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). xref https://github.com/data-apis/dataframe-api/pull/74#discussion_r921464588 cc @vnlitvinov @jorisvandenbossche

- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature - [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit). - [x] Added an entry in the...

These examples are for GCP's AI Platform which are no longer developed compared to Vertex AI, and as discussed in the examples tracker, noting in the READMEs that these examples...

[ENH]: Default `matplotlib.colormaps[None]` to call `matplotlib.colormaps[matplotlib.rcParams['image.cmap']]`?

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### Problem While addressing the `matplotlib.cm.get_cmap` deprecation in 3.6: ``` PendingDeprecationWarning: The get_cmap function will be deprecated in a future version. Use ``matplotlib.colormaps[name]`` instead. ``` I noticed that `None` isn't...

BUG: binary operations don't propogate attrs depending on order with Series and/or DataFrame/Series

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### Pandas version checks - [X] I have checked that this issue has not already been reported. - [X] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of...

DEPR: to_pytimedelta to return Index[object] instead

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https://github.com/pandas-dev/pandas/pull/52459 did this for `to_pydatetime`, so we should do the same for `to_pytimedelta`

Discovered in https://github.com/pandas-dev/pandas/pull/57441

Discovered in https://github.com/pandas-dev/pandas/pull/57441