Learn Python The Hard Way（14）

Let's do one exercise that uses argv and raw_input together to ask the user something specific. You will need this for the next exercise where we learn to read and write files. In this exercise we'll use raw_input slightly differently by having it just print a simple > prompt.

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from sys import argv
script , user_name = argv
prompt = '> '
print "Hi %s, I'm the %s script." % (user_name, script)
print "I'd like to ask you a few questions."
print "Do you like me %s?" % user_name
likes = raw_input(prompt)
print "Where do you live %s?" % user_name
lives = raw_input(prompt)
print "What kind of computer do you have?"
computer = raw_input(prompt)
print """
Alright, so you said %r about liking me.
You live in %r. Not sure where that is.
And you have a %r computer. Nice.
""" % (likes , lives , computer )

result：

                    

Notice though that we make a variable prompt that is set to the prompt we want, and we give that to raw_input instead of typing it over and over. Now if we want to make the prompt something else, we just change it in this one spot and rerun the script.