Why that error?

Question

I don't get it
https://code.sololearn.com/cUV5E4wNUEta/?ref=app

Answer 1

You accidentaly forgot a [], here is the code:
https://code.sololearn.com/ctoAEBp9hN0N/?ref=app

Answer 2

Aymane Boukrouh [INACTIVE] haaaaarg!!!!!
Thank u very much.