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Fiona O'Connor
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Asked: 2022-05-18T16:02:22+00:00 In:

Resolved the problem of the valueerror: need more than 1 value to unpack

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I am trying to write a python that returns an invalid answer. I don’t know where the incorrect command is in the “valueerror: need more than 1 value to unpack.” My detail is:

from sys import argv
 
 script, user_name =argv
 prompt = '>'
 
 print "Hi %s, I'm the %s script." % (user_name, script)

and I end up with the warning message:

Traceback (most recent call last): 
 script, user_name =argv 
 ValueError: need more than 1 value to unpack

Please suggest the best answer to fix it.

valueerror
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2 Answers

  1. Best Answer
    Expert

    The cause: Most likely, you didn’t give a command-line parameter. In that situation, sys.argv only has one value, when it would need two to give values for both user_name and script.

    Solution: To fix the “ValueError: More than one value is needed to unpack”, do like this:

    script = '*some arguments*' 
user_name = '*some arguments*'

     

    • 0

  2. You are getting “ValueError”: More than one value is needed to unpack this error because you gave only one value, which in this case was ex14.py.

    The problem is that you forgot to include a name when you ran the.py files.

    Line 3 in your code is 

    script, user_name = argv

    The script is ex14.py. You forgot to add a name.

    So if your name is michael, then what should you type into the terminal? 

    > python ex14.py michael

    Make this change, and the code will run perfectly

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