Flatten the list

Question

Input:
[1,2,[3,[4,5,6],[7,8,9]],10,11]
Output:
[1,2,3,4,5,6,7,8,9,10,11]
I have no idea how to do this. Can somebody help?

Answer 1

https://code.sololearn.com/cz3KoRP44lA5/?ref=app

Answer 2

Recursion would be useful for that problem.

Answer 3

You can check whether an item is a list by isinstance method:
isinstance(item, list)

This means that item belongs to the list class.

Answer 4

This might help

https://code.sololearn.com/c5iOBsdgp3Zi/?ref=app

Answer 5

another way
https://code.sololearn.com/ccCOxaXww84i/?ref=app

Answer 6

This seems to work too:

https://code.sololearn.com/cgr2lBqxQ2BA/?ref=app