ValueError in Python

Question

Traceback (most recent call last):
    File "filter_import.py", line 77, in <module>
        get(sys.argv[1])
    File "filter_import.py", line 35, in get
        timestamp, ip, hash_value = lines.split()
ValueError: need more than 2 values to unpack

I got this error message when I run my code filter_import, can anyone explain a bit what the problem is?

Part of my code:

if __name__ == '__main__':
import sys
if len(sys.argv) == 1:
    print 'Usage: filter_import.py <filename>'
    sys.exit(1)
get(sys.argv[1])

unwind · Accepted Answer · 2011-12-05 12:44:34Z

6

The line in question doesn't provide two values, so the "unpacking" of split()'s return value into the two variables timestamp, ip and hash_value is failing.

Here's a stand-alone reproduction of the error:

>>> a,b,c = "foo".split()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: need more than 1 value to unpack

answered Dec 5, 2011 at 12:44

unwind

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2 Comments

manxing Over a year ago

thanks, but what about this part? File "filter_import.py", line 77, in <module> get(sys.argv[1]), is there anything wrong as well? @unwind

gecco Over a year ago

No. This a part of the stack trace. The stack trace shows you the lines of code the interpreter went through to get to the line of code raising the exception. In your example it just indicates that method get has been called from line 77 of your module.

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