Question

I know that "".join(list) converts the list to a string, but what if that list contains a nested list? When I try it returns a TypeError due to unexpected list type. I’m guessing it’s possible with error handling, but so far my attempts have been fruitless.

Answer 1

Well, if the list is nested, simply flatten it beforehand:

>>> import itertools
>>> lst = [['a', 'b'], ['c', 'd']]
>>> ''.join(itertools.chain(*lst))
'abcd'