PythonList intersection, union, and difference set

Two lists: {code...} are generated, and the Union is set. The concept of difference set is not mentioned here. the python code is as follows: {code...} generates two List:

A = ['apple','apple','banana']B = ['banana','apple','banana']

The concept of intersection and union is not mentioned here. the python code is as follows:

#! /usr/bin/env python# coding:utf-8listA = [1, 2, 3, 4, 5, 6]listB = [4, 5, 6, 7]# Intersectioninte = list(set(listA).intersection(set(listB)))print "Intersection:", inte# unionuni = list(set(listA).union(set(listB)))print "Union:", uni# Differencesdiff = list(set(listA).difference(set(listB)))print "Differences:", diff

if diff:    print "wrong"else:    print "matched"

TwoList:

A = ['apple','apple','banana']B = ['banana','apple','banana']

The concept of intersection and union is not mentioned here. the python code is as follows:

#! /usr/bin/env python# coding:utf-8listA = [1, 2, 3, 4, 5, 6]listB = [4, 5, 6, 7]# Intersectioninte = list(set(listA).intersection(set(listB)))print "Intersection:", inte# unionuni = list(set(listA).union(set(listB)))print "Union:", uni# Differencesdiff = list(set(listA).difference(set(listB)))print "Differences:", diff

if diff:    print "wrong"else:    print "matched"

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