How can I pass parts of a list to different variables?

Question

Is it possible to pass parts of a list to multiple variables to create new lists? I have a list with 12 words and I want to take the first 4 words and place them in a new list and so on until I have all the words new lists containing 4 words each.

sample1 = ['d', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o']
print(sample1)
row1, row2, row3 = sample1
print(row1)
print(row2)
print(row3)

I get the error:

ValueError: too many values to unpack (expected 3)

My desired final result would be:

row1 = ['d', 'e', 'f', 'g']
row2 = ['h', 'i', 'j', 'k']
row3 = ['l', 'm', 'n', 'o']

Is it always exactly 12 words, or can it be any multiple of 4? — Barmar, Aug 29 '19 at 20:43

score 4 · Accepted Answer · answered Aug 29 '19 at 20:38

4

Of course you can:

sample1 = ['d', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o']

row1, row2, row3 = sample1[0:4], sample1[4:8], sample1[8:12]

print(row1, row2, row3)

result:

['d', 'e', 'f', 'g'] ['h', 'i', 'j', 'k'] ['l', 'm', 'n', 'o']

answered Aug 29 '19 at 20:38

developer_hatch

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score 2 · Answer 2 · answered Aug 29 '19 at 20:40

Just split your list with a proper stepping:

sample1 = ['d', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o']
row1, row2, row3 = [sample1[i:i+4] for i in range(0, len(sample1), 4)]
print(row1, row2, row3)
# ['d', 'e', 'f', 'g'] ['h', 'i', 'j', 'k'] ['l', 'm', 'n', 'o']

How can I pass parts of a list to different variables?

2 Answers2