Python convert tuple to array [duplicate]

Using list comprehension:

>>> a = []
>>> a.append((1,2,4))
>>> a.append((2,3,4))
>>> [x for xs in a for x in xs]
[1, 2, 4, 2, 3, 4]

Using itertools.chain.from_iterable:

>>> import itertools
>>> list(itertools.chain.from_iterable(a))
[1, 2, 4, 2, 3, 4]