when you get error after typing:

from sys import argv script, first, second, third = argv print "The script is called:", script print "Your first variable is:", first print "Your second variable is:", second print "Your third variable is:", third

just go to terminal and type: python (the file you've named .py) argv1 argv2 argv3

btw you can change argv1 argv2 argv3.. for example in the command terminal line I wrote: python ex13.py code type print

I'll get: python ex13.py The script is called: ex13.py Your first variable is: code Your second variable is: type Your third variable is: print

It's so easy but continue until the end, even with the nonsense fault in the terminal.