numpy.common_type(*arrays)

numpy.issubsctype(arg1, arg2)

iinfo.max Maximum value of given dtype.

class numpy.dtype

numpy.can_cast(from, totype, casting = 'safe') Returns True if cast between data types can occur according to the casting rule

iinfo.min Minimum value of given dtype.

dtype.fields Dictionary of named fields defined for this data type, or None. The dictionary is indexed

numpy.result_type(*arrays_and_dtypes) Returns the type that results from applying the NumPy type promotion rules to the arguments

numpy.obj2sctype(rep, default=None)

dtype.base