problem with sys import argv

Dave Angel davea at davea.name
Tue Mar 26 18:55:07 CET 2013


On 03/26/2013 01:26 PM, leonardo selmi wrote:
> hi python community,
>
> i wrote the following programm:
>
> from sys import argv
>
> script, userName = argv
> prompt = '> '
>
> print 'hi %s, i am the %s script' % (userName, script)
> print "i'd like to ask you a few questions."
> print 'do you like me %s' % userName
> likes = raw_input(prompt)
>
> print "where do you live %s?" % userName
> lives = raw_input(prompt)
>
> print 'what kind of computer do you have?'
> computer = raw_input(prompt)
>
> print """
> alright so you said %r about liking me.
> you live in %r. not sure where that is.
> and you have a %r computer. nice
> """ % (likes, lives, computer)
>
> and i got the following error:  Traceback (most recent call last):
> File "/var/folders/89/84z7tw3d3rv39gny3n2p963m0000gn/T/pythonInTerm.GUF6PWCM", line 3, in <module>
>    script, userName = argv
> ValueError: need more than 1 value to unpack
>
> what can i do?
>
> thanks!
>

Since the script takes a mandatory argument, run it with one.

python  myscript.py  Dave

Better would be to change the script to check len(argv) for exactly 2, 
and tell the user how he should have run it.



-- 
DaveA



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