ENH: df.to_csv should have keyword "delimiter" as alias for "sep".

[ClemensMo]

Is your feature request related to a problem?

As the title suggests, I'd like to have "delimter" as an alias for "sep" in the function pandas.DataFrame.to_csv(). This already exists for pandas.read_csv() and would make it more symmetrical.

Describe the solution you'd like

Simply add the alias.

API breaking implications

This will not affect the API in any critcal way, since "delimiter" is not used currently. This will however make the API more intuitive.

Describe alternatives you've considered

Using "sep", however this (for me) is less consistant

Additional context

This occurs when trying to safe a df as a csv file. I'd be happy to implement the change myself, although I haven't contributed to any open source project so far. I'd be willing to learn though.

[phofl]

Hi, thanks for your report. There is lots of discussion about this on the issue tracker, for example in #22639. Could you comment on these discussions?