《笨办法学Python》 第16课手记

from sys import argv

script, filename = argv

print "We are going to erase %r." % filename
print "If you don't want to do 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()