[Tutor] Beginner puzzle with unpacking argv

[Lisi]

Copied and pasted:
From text of Learn Python the Hard Way

1 from sys import argv
2
3 script, user_name = argv

From my script (typed, not copied and pasted, but copied and pasted from my 
script to here):

1 from sys import argv
2 
3 script, user_name = argv

I have tried every permutation of white space I could think of that might have 
looked like the original, but I always get the same error:

lisi at Tux:~/Python/LearnPythonTheHardWay$ python ex14.py
Traceback (most recent call last):
  File "ex14.py", line 3, in <module>
    script,  user_name=argv
ValueError: need more than 1 value to unpack

I haven't got past line 3 yet!!  I know that you need the right number of 
variables, but my script has got as many as the original - it's the same as 
the original!

Help!

Lisi