python program to find common items in two arrays code example

Example 1: find common elements in two lists python

list1 = [1,2,3,4,5,6]
list2 = [3, 5, 7, 9]
list(set(list1).intersection(list2))

Example 2: find number of common element in two python array

len([x for x in list1 if x in list2])