numpy.issubdtype

numpy.issubdtype(arg1, arg2) [source]

Returns True if first argument is a typecode lower/equal in type hierarchy.

Parameters:	arg1, arg2 : dtype_like dtype or string representing a typecode.
Returns:	out : bool

See also

issubsctype, issubclass_

numpy.core.numerictypes

Overview of numpy type hierarchy.

Examples

>>> np.issubdtype('S1', str)
True
>>> np.issubdtype(np.float64, np.float32)
False