This example will teach us how to find the only odd number of elements in a group.
Source Code
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
nlist = input("Please input a list separated by SPACE: ").split()
nlist = [int(i) for i in nlist]
odd = 0
for i in nlist:
odd ^= i
print(odd)
Output:
Please input a list separated by SPACE: 5 8 10 12 10 8 5 9 12
9