Create nested list from multiple lists pair elements

Question

I have n lists with n elements which looks like this, in this example I will show only one with 2 elements, but it could be n:

['-', '-']
['4.500.740', '924.372']
['1.978.095', '3.802.674']
['3.434.599', '3.614.503']
['8.588.294', '4.973.343']

I need to create one single nested list that looks like the next one:

[['-','4.500.740','1.978.095','3.434.599','8.588.294'],['-','924.372','3.802.674','3.614.503','4.973.343']]

I've been looking with many related questions to this, but I can't figure it out yet, so any advice will be appreciated.

`list(zip(*lists))`? But how are these lists related? Is this a 2d list or are they just floating loose? If it's a 2d list, please add `[]` around it and comma-delimit it so there's no ambiguity. — ggorlen, May 24 '20 at 04:09

Red · Accepted Answer · 2020-05-24T04:26:08.113

1

You can use list comprehensions:

l1 = [['-', '-'],
      ['4.500.740', '924.372']]

l2 = [[a[n] for a in l1] for n in range(len(l1))]

print(l2)

edited May 24 '20 at 04:26

answered May 24 '20 at 04:10

Red

What about n elements? – Sanchez Franco May 24 '20 at 04:21
Okay, I'll add that... – Red May 24 '20 at 04:22
Does that mean if there are 5 lists, each list must contain 5 strings? – Red May 24 '20 at 04:26
Yup. If lists have 3 elements separated by comma, the nested list should have 3 lists like this [[],[],[]] with the element equivalent of each one, all the first elements in list one, all the seconds in second, etc. – Sanchez Franco May 24 '20 at 04:44
Then my answer does just that :) – Red May 24 '20 at 04:47

1 Answers1