[kjkjadksj]

Only if you anticipate your data having commas in fields, which is somewhat rare in my experience (as in I’ve never seen it at all).

[setopt]

Comma is the decimal separator in many European languages. It’s also not uncommon in strings.

[kjkjadksj]

Pandas can handle that with a flag

[setopt]

Sure. Another option is semicolon-delimited files which are also in use in Europe, and Pandas handles that fine too.

I was responding to your comment that you had never seen commas in data fields in CSV files, and wanted to point out that this is a quite common issue in Europe.

(It also often wreaks havoc with Excel files btw, as Excel will then only casts strings to decimal numbers when a file is opened in some locales...)