How to split an array into chunks of a given length in python? [duplicate]

Question

What is the fastest and shortest method to turn this:

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

for example into this:

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

by giving the input 2 as the fixed length.

Of course there are some easy ways to make this but none of them occur to me as fast or pretty.

Answer 1

Why don't you try out a list comprehension?

Example:

[ids[i:i+2] for i in range(0,len(ids),2)]

Output:

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