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# Python | Split list in uneven groups

• Last Updated : 05 Sep, 2019

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.

 `# 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))`
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]]
```

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