#coding:utf-8
from sys import argv
script, filename = argv
print ("We're going to erase %r." % filename )
print ("If you don't want that, hit CTRL-C (^C).")
print ("If you do want that, hit RETURN.")
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 = input("line1: ")
line2 = input("line2: ")
line3 = input("line3: ")
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()
笨方法学python 习题16
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