Python Exercise #16

#!/usr/bin/python      # exact position of python#!/usr/bin/env python  # position of python in enviornment variables# -*- coding:utf-8 -*- # coding# Purpose: Reading And Writing Filesfrom sys import argvscript, filename = argvprint "We're going to erase %r." % filenameprint "If you don't want that, hit CTRL-C (^C)."print "If you do want that, hit RETURN."raw_input("?")print "Opening the file..."target = open(filename, 'w')print "Truncating the file. Goodbye!"target.truncate()print "Now I'm going to ask you for three lines."line1 = raw_input("line 1: ")line2 = raw_input("line 2: ")line3 = raw_input("line 3: ")print "I'm going to write these to the file."target.write(line1)target.write("\n")target.write(line2)target.write("\n")target.write(line3)target.write("\n")print "And finally, we close it."target.close()