Exercise:
There's too much repetition in this file. Use strings, formats, and escapes to print out line1, line2, and line3 with just one target.write() command instead of 6.
Code from the book:
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: ") 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() My code:
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: ") print "I'm going to write these to the file." target.write("%s\n%s\n%s\n") %(line1,line2,line3) print "And finally, we close it." target.close() My solution doesn't work. I searched with Google to see if I can solve this exercise with the things I find there but I haven't managed to come out with the correct code. What is the solution to this exercise?
target.write("%s\n%s\n%s\n" % (line1, line2, line3))- You had the arguments outside of the write.