python - How to combine two list of lists to a new list -


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i have problem this. have 2 lists, , b, a=[[1,2],[3,4],[5,6]] , b=[["a","b"],["c","d"]], got new list these 2 

c = [      [[1,2],["a","b"]],      [[3,4],["a","b"]],      [[1,2],["c","d"]],      [[3,4],["c","d"]]     ]

i had try following code:

a = [[1,2],[3,4]] b=[["a","b"],["c","d"]] each in a:     evey in b:         print each.append(evey)

however, output none.

any helpful information appreciated. thank you.

by way, had try replace "append" simple "+". output list elements not list.

this answered here: get cartesian product of series of lists?

try this:

import itertools  = [[1,2],[3,4]] b = [["a","b"],["c","d"]] c = []  element in itertools.product(a,b):     c.append(list(element))  print c

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