Generating all combinations of a list in python

Question

Here\'s the question:

Given a list of items in Python, how would I go by to get all the possible combinations of the items?

There are several similar questio

Answer 1

You can generate all the combinations of a list in python using this simple code

import itertools

a = [1,2,3,4]
for i in xrange(1,len(a)+1):
   print list(itertools.combinations(a,i))

Result:

[(1,), (2,), (3,), (4,)]
[(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)]
[(1, 2, 3), (1, 2, 4), (1, 3, 4), (2, 3, 4)]
[(1, 2, 3, 4)]