Split nested lists into different lists

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I have a list like this:

list1=[['xx', 'xx', 'xx', 'xx', 'xx'],
 ['yy', 'yy', 'yy', 'yy', 'yy'],
 ['zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz'],
 ['tt', 'tt', 'tt', 'tt', 'tt']
.
.
.
n]

I would like to have a method to cast the nested lists into different lists. However, as the length of list1 differs every time my program executes I want to have an automated procedure

For example, the expected outcome looks like that.

list1= ['xx', 'xx', 'xx', 'xx', 'xx']
list2= ['yy', 'yy', 'yy', 'yy', 'yy', 'yy']
list3= ['zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz']
list4= ['tt', 'tt', 'tt', 'tt', 'tt']
.
.
.
listn=[...........]

Any ideas?

nested-lists list python-3.x python
1 Answers

This is not a good practice at all Use list[index] to get the list at any position, Like use list[45] to get the list at index 45.

but if you want then you can use this code.

Try this

full_list=[['xx', 'xx', 'xx', 'xx', 'xx'],
 ['yy', 'yy', 'yy', 'yy', 'yy'],
 ['zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz',
  'zz'],
 ['tt', 'tt', 'tt', 'tt', 'tt']]

allListName = []
for i in range(1,len(full_list)+1):
    exec(f"list{i}={full_list[i-1]}")
    allListName.append(f'list{i}')
print(allListName)
print(list1)
print(list2)
# print(listn)

OUTPUT

['list0', 'list1', 'list2', 'list3']
['yy', 'yy', 'yy', 'yy', 'yy']
['zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz']

  1. In the loop i is the index of the list in the full_list and the list[i] is the list at the i index.

  2. exec function run string as a code block so the in this case string is f'list{i}={list[i]}' so this string is executed as a string.

  3. if i is 1 then list1=['xx', 'xx', 'xx', 'xx', 'xx'] and soon.

  4. For the allListName this contains all the nested list names that are created in the loop.

  5. If you want all nested names with the value to print then use this code below the loop.

for an in allListName:
    print(f'{a} = {locals()[a]}')

Output

list1 = ['xx', 'xx', 'xx', 'xx', 'xx']
list2 = ['yy', 'yy', 'yy', 'yy', 'yy']
list3 = ['zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz', 'zz']
list4 = ['tt', 'tt', 'tt', 'tt', 'tt']
codester_090
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