In Python, itertools is a module in Python that provides functions. These functions help in iterating through iterables.
The product() method of the itertools module returns the cartesian product of the input iterables. The method takes an optional argument called repeat, which when used returns the cartesian product of the iterable with itself for the number of times specified in the repeat parameter.
Let’s refer to the coding example below to understand more.
itertools.product(*iterables, repeat=1)
*iterables: The list of iterables.repeat: An integer argument that returns the cartesian product of the iterable with itself for the number of times specified.from itertools import productlst = [1,2,3,4,5]print("Original list - ", lst)print("Cartesian product of the list with itself - ", list(product(lst, repeat=2)))lst1 = [1, 2, 3]lst2 = ['a', 'b', 'c']print("Cartesian product of the lst1 and lst2 - ", list(product(lst1, lst2)))
product function from itertools module.lst.lst.product function with lst and repeat=2 as arguments to obtain the cartesian product of lst with itself.lst11.lst2.product function with lst1 and lst2 as arguments to obtain the cartesian product between lst1 and lst2.