How to check if an object is an np.array()?
The type of what numpy.array returns is numpy.ndarray.  You can determine that in the repl by calling type(numpy.array([])).  Note that this trick works even for things where the raw class is not publicly accessible.  It's generally better to use the direct reference, but storing the return from type(someobj) for later comparison does have its place.
I'm trying to build a code that checks whether a given object is an np.array() in python. 
if isinstance(obj,np.array()) doesn't seem to work.
I would truly appreciate any help.