Extend eval test of standard functions to cover python engine.
- [x] ~closes #xxxx (Replace xxxx with the GitHub issue number)~ (no issue created)
- [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~ (not applicable)
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] ~Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.~ (not applicable)
- [x] ~Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.~ (not applicable)

IIUC the standard functions are (now?) supported in both engines and we can have tests for that.
Thanks for the PR, is there an associated issue? > Thanks for the PR, is there an associated issue?

None that I'm aware of. I sort of randomly noticed this when I was trying to understand how does `eval` work. I was thinking about submitting an issue first but given that this is purely test change it doesn't feel like a bug nor a feature. Anyway, given the nature of the change and the very small size I figured that the easiest way forward would be just submit the PR.

Let me know if I should do anything else (or that we just don't want to merge this for any reason -- if that is the case). Thanks @domsmrz 