Sorting a python array/recarray by column

Question

I have a fairly simple question about how to sort an entire array/recarray by a given column. For example, given the array:

import numpy as np
data = np.a         


        

Answer 1

To sort on the second column use itemgetter

>>> from operator import itemgetter
>>> data = [[5,2], [4,1], [3,6]]
>>> sorted(data)
[[3, 6], [4, 1], [5, 2]]
>>> sorted(data,key=itemgetter(1))
[[4, 1], [5, 2], [3, 6]]
>>>