Turning a list into nested lists in python

Question

Possible Duplicate:
How can I turn a list into an array in python?

How can I turn a list such as:

<         


        

Answer 1

Based on the answer from Fred Foo, if you're already using numpy, you may use reshape to get a 2d array without copying the data:

import numpy
new_list = numpy.array(data_list).reshape(-1, 3)

Answer 2

new_list = [data_list[x:x+3] for x in range(0, len(data_list) - 2, 3)]

List comprehensions for the win :)