TYP #37715: Fix mypy errors in column.py
- [ ] xref #37715 
- [ ] [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).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Huh strange - I guess that's why this was ignored before. That said, I think the property decorator is correct, at least according to the dataframe protocol

https://data-apis.org/dataframe-protocol/latest/API.html

So I think you can update the tests and add a whatsnew note describing this as a bug fix

@jorisvandenbossche  > That said, I think the property decorator is correct, at least according to the dataframe protocol
> 
> https://data-apis.org/dataframe-protocol/latest/API.html

Hmm, the documentation seems to be not up to date. This was originally a property, but changed to a method a while ago (https://github.com/data-apis/dataframe-api/pull/74#discussion_r841112693), so the currently implementation here is actually correct. Thanks for the pull request, but I believe this was addressed and fixed in #50565 so closing. Happy to have your contributions on any other typing issues!