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])

Answer 1

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