challenge find all sub sets

Question

https://code.sololearn.com/c43988GjjZE2/?ref=app

do you have other ways for do this

Answer 1

Woww it's much shorter and more useful code .
thanks bro well done

Answer 2

your codes is very cool but i can't understand how work some of these.
why did not write comment for these?

Answer 3

https://code.sololearn.com/cJg35bq5Z4YQ/?ref=app

Answer 4

Thank you too 😊