I need someone to explain this code for me. Line by line explanation

Question

https://code.sololearn.com/cXqsZL41ja8I/?ref=app
https://code.sololearn.com/cXqsZL41ja8I/?ref=app

Answer 1

what dont you understand?

Answer 2

https://code.sololearn.com/cH77aT8y3J2T/?ref=app

Answer 3

first the class name is printed.
after the returned sequence.
returned is redefined in funkybackward.

Answer 4

what don’t u understand