How to Find the n of Two Lists in Python

In this example we will show how to find the union of two input lists in Python.

Source Code

#! /usr/bin/env python3
# -*- coding: utf-8 -*-

def userList():
    n = int(input("Please input the number of elements: "))
    a = []
    for i in range(n):
        j = int(input("Please input the element: "))
        a.append(j)
    return a

listA = userList()
listB = userList()
listC = list(set(listA).union(set(listB)))
print(listC)

Output:

Please input the number of elements: 6
Please input the element: 1
Please input the element: 2
Please input the element: 3
Please input the element: 4
Please input the element: 5
Please input the element: 6
Please input the number of elements: 5
Please input the element: 4
Please input the element: 5
Please input the element:  6
Please input the element: 7
Please input the element: 8
[1, 2, 3, 4, 5, 6, 7, 8]