What's wrong???

Question

https://code.sololearn.com/c123NbTj98xw/?ref=app

Answer 1

There are "invisible" characters you have to delete.
Just delete the spaces where you get an error and add them again manually.

Answer 2

It could happen if you copied the code from a program with an other charset.

Answer 3

Thanks a lot, why does the problem appear? 🤔🤔🤔