#!/usr/bin/python
#coding=utf-8

a = "Hello"
b = "Python"

print "a + b =", a + b 
print "a * 2 =", a * 2 
print "a[1] =", a[1] 
print "a[1:4] =", a[1:4] 

if( "H" in a) :
    print "H is in a" 
else :
	print "H is not in a" 

if( "M" not in a) :
    print "M is in a" 
else :
	print "M in a"

print r'\n'
print R'\n'

print "你好，世界";