CODEWITHSUNDEEP
python
Sindhu Laksh
Sindhu Laksh

Reputation: 29

Not enough values to unpack when using split function

Here I'm trying to make a sub-list from list, and I'm getting "Not enough values to unpack error.

If I use k=s.split(',') it shows the error, whereas if I use k1=[s.split(',')], it doesn't show any error while unpacking.

Both have the same type, same size and same-content

My code:

inputs = ["1, foo, bar", "2, tom, jerry"]
outputs1=[]
for s in inputs:
    print(s)
    k=s.split(',')
    print(k,type(k),len(k))
    k1=[s.split(',')]
    print(k1,type(k1),len(k1))
    for (x, y, z) in k:
        outputs1.append([int(x), y.strip(), z.strip()])
print(outputs1)

Upvotes: 0

Views: 2404

Answers (4)

tobias_k
tobias_k

Reputation: 82949

Using k, you have a tuple with three elements, and in for (x, y, z) in k you try to unpack each of those three elements to three more element. This does not work. Using k1, you have a list with a single three-elemented tuple inside. Here, for (x, y, z) in k1 would work, but it's entirely pointless.

Instead, you should unpack the values directly to x, y, z:

for s in inputs:
    x, y, z = s.split(',')
    outputs1.append([int(x), y.strip(), z.strip()])

Upvotes: 2

min2bro
min2bro

Reputation: 4638

Try this:

inputs = ["1, foo, bar", "2, tom, jerry"]
outputs1=[]
for s in inputs:
    print(s)
    k=s.split(',')
    print(k,type(k),len(k))
    k1=[s.split(',')]
    print(k1,type(k1),len(k1))
    for (x, y, z) in k1:
        outputs1.append([int(x), y.strip(), z.strip()])
print(outputs1)**

Outputs1:

[[1, 'foo', 'bar'], [2, 'tom', 'jerry']]

I'm just fixing your code but there is much better way to write this code

Upvotes: 0

Vj-
Vj-

Reputation: 722

k = s.split(',') this is where the error occours.

s.split(',') in your case returns 3 strings. Buy on the left hand side theres only one variable k. You cannot assign 3 variables to only one variable.

changing it to k1, k2, k3 = s.split(',') will work

Upvotes: 0

Colin Ricardo
Colin Ricardo

Reputation: 17269

You need for (x, y, z) in k1: instead of for (x, y, z) in k:.

Upvotes: -1

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