How to flatten a list of nested tuples in Python?

Question

I have a list of tuples that looks like this:

[(\'a\', \'b\'), (\'c\', \'d\'), ((\'e\', \'f\'), (\'h\', \'i\'))]

I want to turn it into thi

Answer 1

A one-line solution would be using itertools.chain:

>>> l = [('a', 'b'), ('c', 'd'), (('e', 'f'), ('h', 'i'))]
>>> from itertools import chain
>>> [*chain.from_iterable(x if isinstance(x[0], tuple) else [x] for x in l)]
[('a', 'b'), ('c', 'd'), ('e', 'f'), ('h', 'i')]