permutations of two lists in python

Question

I have two lists like:

list1 = [\'square\',\'circle\',\'triangle\']
list2 = [\'red\',\'green\']

How can I create all permutations of these

Answer 1

How about

[x + y for x in list1 for y in list2] + [y + x for x in list1 for y in list2]

Example IPython interaction:

In [3]: list1 = ['square', 'circle', 'triangle']

In [4]: list2 = ['red', 'green']

In [5]: [x + y for x in list1 for y in list2] + [y + x for x in list1 for y in list2]
Out[5]: 
['squarered',
 'squaregreen',
 'circlered',
 'circlegreen',
 'trianglered',
 'trianglegreen',
 'redsquare',
 'greensquare',
 'redcircle',
 'greencircle',
 'redtriangle',
 'greentriangle']