Determine the endianness of a numpy array

Question

I have a numpy.array and I want to find out what endianness is used in the underlying representation.

A byteorder property is documented here, but none of the given examples show it being used with an array.

Answer 1

byteorder is a data type objects dtype attribute so you need to do this:

In [10]: import numpy as np

In [11]: arr = np.array([1,2,3])

In [12]: arr.dtype.byteorder
Out[12]: '='