Can someone find and explain the error?

Question

I wrote a code for sorting a list of names in alphabetical order, can't find the error.
https://code.sololearn.com/cXsVXxiyZTME/?ref=app

Answer 1

@Jake : You may have copied this code from somewhere. So there seem to be certain invisible characters which interrupt the code playground. Just delete the characters at line 9 and 35.

https://code.sololearn.com/c3dUgVDGWV56/?ref=app

Answer 2

@Jake : Well done! I saw those before but didn't know that you were asking about it. Yes it wasn't producing results before. Anyways, now it works *fine* :D

Answer 3

I corrected it. There were some other errors, too. Works fine now.
https://code.sololearn.com/cd0WSzq1SYdc/?ref=app