python lists common elements 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: Write a Python program to find common element(s) in a given nested lists.

>>> p = [[1,2,3], [1,9,9], [1,2,4]]
>>> set.intersection(*map(set, p))
set([1])
>>> ip = iter(p)
>>> s = set(next(ip))
>>> s.intersection(*ip)
set([1])