Python | Split list in uneven groups

Sometimes, while working with python, we can have a problem of splitting a list. This problem is quite common and has many variations. Having solutions to popular variations proves to be good in long run. Let’s discuss certain way to split list in uneven groups as defined by other list.

Method : Using itertools.islice() + list comprehension
The combination of above functionalities can be used to perform this task. In this, islice() is used to perform the core task of slicing the list and list comprehension is used to perform the task of binding together logic and iterations. The container is converted to iterator for faster iteration.

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate working of
# Split list in uneven groups
# using itertools.islice() + list comprehension
from itertools import islice
  
# initialize list
test_list = [1, 4, 5, 7, 6, 5, 4, 2, 10]
  
# initialize split list
split_list = [3, 4, 2]
  
# printing original list
print("The original list is : " + str(test_list))
  
# printing split list 
print("The split list is : " + str(split_list))
  
# Split list in uneven groups
# using itertools.islice() + list comprehension
temp = iter(test_list)
res = [list(islice(temp, 0, ele)) for ele in split_list]
  
# printing result
print("The resultant split list is : " + str(res))

chevron_right


Output :

The original list is : [1, 4, 5, 7, 6, 5, 4, 2, 10]
The split list is : [3, 4, 2]
The resultant split list is : [[1, 4, 5], [7, 6, 5, 4], [2, 10]]


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.