python: convert “5,4,2,4,1,0” into [[5, 4], [2, 4], [1, 0]]

Question

Is there a \"straightforward\" way to convert a str containing numbers into a list of [x,y] ints?

# from: \'5,4,2,4,1,0,3,0,5,1,3,3,14,32,3,5\'
# to: [[5, 4         


        

Answer 1

#!/usr/bin/env python

from itertools import izip

def pairwise(iterable):
    "s -> (s0,s1), (s2,s3), (s4, s5), ..."
    a = iter(iterable)
    return izip(a, a)

s = '5,4,2,4,1,0,3,0,5,1,3,3,4,3,3,5'
fields = s.split(',')
print [[int(x), int(y)] for x,y in pairwise(fields)]

Taken from @martineau's answer to my question, which I have found to be very fast.

Output:

[[5, 4], [2, 4], [1, 0], [3, 0], [5, 1], [3, 3], [4, 3], [3, 5]]