CODEWITHSUNDEEP
pythonfor-loop
Shifu
Shifu

Reputation: 2185

Need more than 1 value to unpack

I was writing the following code to create a dictionary:

for a,b,c in foo:
   d=float(a or 0)-float(b or 0)
   bar[c]=d
   print bar

This works but gives me bar over and over. However when I try to use bar outside the for loop, i get the following error;

ValueError: need more than 1 value to unpack

Upvotes: 2

Views: 1922

Answers (1)

Stephan
Stephan

Reputation: 17981

That error message means you are trying to store one value in a tuple that requires more than one value.

>>>(x,y,z) = [5]
ValueError: need more than 1 value to unpack

You should look for somewhere in your code where you are assigning to a tuple. It seems that foo is a list of tuples. Maybe you are trying to assign something to an element of foo

Upvotes: 2

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