TST: added test to ensure subclasses of ExcelWriter don't add any public attributes
- [ ] closes #49602
- not fully tested with style and pre-commit checks yet
I am failing the pre-commit check and from what I saw in the results of the tests this time, I think it has to do with the import statement? Do you have any input on what the issue might be, ie did I put it in a bad spot based on certain code style/maintenance criteria? Or where I could look for further documentation on this? https://pandas.pydata.org/docs/development/contributing_codebase.html#pre-commit Thanks @catmar22  Thanks @catmar22!