python - How do I find out if a numpy array contains integers?

Question

I know there is a simple solution to this but can't seem to find it at the moment.

Given a numpy array, I need to know if the array contains integers.

Checking the dtype per-se is not enough, as there are multiple int dtypes (int8, int16, int32, int64 ...).

question from:https://stackoverflow.com/questions/934616/how-do-i-find-out-if-a-numpy-array-contains-integers

Answer 1

Found it in the numpy book! Page 23:

The other types in the hierarchy de?ne particular categories of types. These categories can be useful for testing whether or not the object returned by self.dtype.type is of a particular class (using issubclass).

issubclass(n.dtype('int8').type, n.integer)
>>> True
issubclass(n.dtype('int16').type, n.integer)
>>> True