How to identify numpy types in python?

Question

How can one reliably determine if an object has a numpy type?

I realize that this question goes against the philosophy of duck typing, but idea is to make sure a fun

Answer 1

To get the type, use the builtin type function. With the in operator, you can test if the type is a numpy type by checking if it contains the string numpy;

In [1]: import numpy as np

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

In [3]: type(a)
Out[3]: 

In [4]: 'numpy' in str(type(a))
Out[4]: True

(This example was run in IPython, by the way. Very handy for interactive use and quick tests.)