I was responding to

> mismatched tabs/spaces being used for indentation between team members

Well yes. Say you check out a project that's all tabs but your editor is using spaces for indentation. You change a line and now the program is broken. Calling the auto-formatter won't help you.

This is literally not a problem. All Python projects use 4-space indentation. You would not have your editor configured for tabs when editing a Python program.

It's really not an issue at all in practice. The issue of making moving code more awkward is true but really barely an inconvenience. It's not difficult to select it and press tab a couple of times.

As I said the biggest issue is with closures and expressions that you might want on one line.

>This is literally not a problem. All Python projects use 4-space indentation.

Tell that to the one team at my old workplace that used spaces for all their scripts.

Like I said it’s a stupid source of errors that can be mitigated through style guides and tooling but it’s still a source of errors.