笨办法13参数、解包、变量

笨办法13参数、解包、变量_草稿

加分习题3：将 raw_input 和 argv 一起使用，让你的脚本从用户手上得到更多的输入。

 1 from sys import argv
 2 
 3 script, first, second, third = argv #试了一下，这里的第一个参数script可以随便改成啥，不影响运行结果
 4 '''
 5 print "The script is called:", script
 6 print "Your first variable is:", first
 7 print "Your second variable is:", second
 8 print "Your third variable is:", third
 9 '''
10 
11 raw_input("The script is called: "), script
12 raw_input("Your first variable is: "), first
13 raw_input("Your second variable is: "), second
14 raw_input("Your third variable is: "), third

不知道是不是这个意思，总觉得怪怪的，先这样后面再改！

运行结果如下，需要手动输入变量名：
这里写图片描述

==============下面重写！==============

 1 from sys import argv
 2 
 3 script, first, second, third = argv
 4 prompt = ">"
 5 
 6 print "please enter the script name:"
 7 script = raw_input(prompt)
 8 
 9 print "please enter the first variable:"
10 first = raw_input(prompt)
11 
12 print "please enter the second name:"
13 second = raw_input(prompt)
14 
15 print "please enter the third name:"
16 third = raw_input(prompt)
17 
18 print """
19 The script is called:%r
20 The first variable is:%r
21 The second variable is:%r 
22 The third variable is:%r
23 """ % (script, first, second, third)

运行结果：
这里写图片描述

ps：但是怎么才能把引号去掉呢。。埃玛以后再说吧！
来解答！重新翻看了之前的第6课，只要把%r换成%s就没有引号啦！！

20170914 按照22课练习来复习

argv 和 raw_input()的区别：要求用户输入的位置不同。在命令行输入参数用argv.，在脚本执行的过程中输入参数用raw_input()