Is your question "what does an ide do that a text editor doesn't"?

Auto complete is very nice.

Find usages is necessary.

Syntax highlighting. The yellow squiggle for when it thinks you maybe messed up. (Like when you typo = instead of ==)

Refactor: rename. Smarter than find replace

Refactor: move. Also smart

Using an interpreter in docker is nice. It can find all the sources without me installing anything on the host machine. Being able to cmd click to view the library code is huge.

I don't really use the debug tools because I'm fine with the command line pdb, but they're very useful for people who like them.