Python Program to Split a List Into Evenly Sized Chunks

 

Example 1: Using yield

def split(list_a, chunk_size):

    for i in range(0, len(list_a), chunk_size):

        yield list_a[i:i + chunk_size]

chunk_size = 2

my_list = [1,2,3,4,5,6,7,8,9]

print(list(split(my_list, chunk_size)))

The above code splits the given array into smaller lists each of size 2. You can do the same thing using list compression as below.

chunk_size = 2

list_chunked = [my_list[i:i + chunk_size] for i in range(0, len(my_list), chunk_size)]

print(list_chunked)

Output

[[1, 2], [3, 4], [5, 6], [7, 8], [9]]

Example 2: Using numpy

import numpy as np

my_list = [1,2,3,4,5,6,7,8,9]

print(np.array_split(my_list, 5))

Output

[array([1, 2]), array([3, 4]), array([5, 6]), array([7, 8]), array([9])]