Find duplicated elements in a python list
This is a pretty neat python snippet to find duplicated elements in a list: def find_duplicates(my_list): my_set = set() tmp = seen.add duplicates = set( x for x in my_list if x in my_set or tmp(x) ) return list( duplicates ) Try it: my_list = [1234, 456, 1234, 678, 'abc', 'abc', 'abc'] find_duplicates(my_list) # should be [1234, 'abc']