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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."

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: ")

allLines = "%r \n %r \n %r \n" % (line1,line2,line3)

print "I'm going to write these to the file."

target.write(allLines)

print "And finally, we close it."

target.close()

#It turns out you don't need truncate with open(filename,"w")