It's there in form of chain: from itertools import chain flatten = chain.from_iterable Ref: pytudes - https://github.com/norvig/pytudes/blob/main/ipynb/Adven

It's there in form of chain: from itertools import chain flatten = chain.from_iterable Ref: pytudes - https://github.com/norvig/pytudes/blob/main/ipynb/Advent-2020.ipynb https://github.com/norvig/pytudes/blob/main/ipynb/Advent-202...