直接说结果，然后去理解
双引号内不用加反斜杠
单引号内必须加反斜杠
三单引号输入换行需要加单引号
三双引号最为完美，换行转义什么都不用加
#!/usr/bin/python
# -*- coding: utf-8 -*-
str1 = 'python'
str2 = "PYTHON"
print "str1=",str1
print "str12",str2
str3 = 'I\'m a big fan of Pyton.'
print "str3=",str3
str4 = 'We all know that \'A\' and \'B\' are two capital letters.'
print "str4=",str4
str4_ = "We all know that 'A' and 'B' are two capital letters."
print "str4_=",str4_
str5 = 'The teache said:"a b c" is hello'
print "str5=",str5
str6 = "List of name:\
Hua li\
Chao Deng"
print "str6=",str6
str7 = """List of name:
Hua li
Chao Deng"""
print "str7=",str7
print 15*"="
str8 = "List of name:\nHua li\nChao Deng"
print "str8=",str8
print 30*"="
str9 = '''List of name:
Hua li #ceshi
Chao Deng@#$%^&*()()_+_
'''
print "str9=",str9
jieguoruxia
str1= python
str12 PYTHON
str3= I'm a big fan of Pyton.
str4= We all know that 'A' and 'B' are two capital letters.
str4_= We all know that 'A' and 'B' are two capital letters.
str5= The teache said:"a b c" is hello
str6= List of name: Hua li Chao Deng
str7= List of name:
Hua li
Chao Deng
===============
str8= List of name:
Hua li
Chao Deng
==============================
str9= List of name:
Hua li #ceshi
Chao Deng@#$%^&*()()_+_
参考：python3中单引号，双引号，三个单引号 ，三个双引号的差别，以及反斜杠的用法 python单引号(')、双引号(")、三引号('''，""") Python中单引号，双引号，3个单引号及3个双引号的区别
