Unique Only Cartesian Product Of Several Lists

The following works well for cart_product([1,2,3], [a,b,c], [v]), doesn't it also return duplicate cartesian product, if so, how to get unique cartesian products? import itertools

Solution 1:

1. To get only the unique elements, you can use set notation like this (Note: This doesnt guarantee the order)

   return list({element for element in itertools.product(*somelists)})
   

   or as per Paul Draper's comment we can do it like this

   list(set(itertools.product(*somelists)))
   

   If you want to maintain the order as well

   import itertools
   defcart_product(somelists):
       result, tempSet = [], set()
       for element in itertools.product(*somelists):
           if element notin tempSet:
           tempSet.add(element)
           result.append(element)
       return result
   

2. To make your program work with list of lists, just change the function declaration from

   defcart_product(*somelists):
   

   to

   defcart_product(somelists):