Why isn't it best practice? Because of efficiency?
If it is the readability, it is one of the most readable solutions, certainly more readable than regex.

True

This isn't really best practice. It's more like, shortest code.

Hey you know what i just ignore the interger. Nice.
if and else before for then another if for ignoring interger! really Nice

Seeing other solutions is always nice to learn some new functions, Nice!

It only works if both are there, since it's a ternary condition and not "normal" if-else statements.

Hey. if and else before for! Nice!

Ahhhhhhh, I didn't realize I could use an if statement after my in statement. That would have been so much more elegant. I also learned about strip, so thanks for that :)

ah, we just found an user with an alter account who's upvoting himself?