《笨办法学python》源码 Ex06.py

# -*- coding: utf-8 -*-
#-------------------------------------------------------------------------------
# Name:        ex_06.py
# Purpose:     特别注意,这里有好多字符串的特殊写法.
#
# Author:      huanghuan
#
# Created:     14-08-2013
# Copyright:   (c) huanghuan 2013
# Licence:     <your licence>
#-------------------------------------------------------------------------------



# %r 用来debug的.显示变量原始数据.其他符号,显示输出.

x = "there are %d types of people." % 10
binary = "binary"
do_not = "don't"

# 特殊写法.注意.
y = "those who know %s and those who %s." % (
    binary, do_not)

print x
print y

print "I said: %r." % x
print "I also said: '%s'." % y

hilarious = False
# 特殊写法.
joke_evaluation = "Isn't that joke so funny?! %r"

# 对比如下2个写法,产生效果.
print joke_evaluation 
print joke_evaluation % hilarious

w = "this is the left side of ..."
e = "a string with a right side."

# 特殊写法.字符串连接.
print w + e

print "---------------------"
# 嵌套字符串..特殊写法..特别注意.
key1 = 1
str1 = "this is %d test." % key1
str2 = "see what happend : %s" % str1
print str1
print str2