dtype.str The array-protocol typestring of this data-type object.

dtype.subdtype Tuple (item_dtype, shape) if this

numpy.min_scalar_type(a) For scalar a, returns the data type with the smallest size and smallest scalar

dtype.names Ordered list of field names, or None if there are no fields. The names are ordered according

dtype.isalignedstruct Boolean indicating whether the dtype is a struct which maintains field alignment. This flag

numpy.issubclass_(arg1, arg2)

dtype.shape Shape tuple of the sub-array if this data type describes a sub-array, and () otherwise.

dtype.descr Array-interface compliant full description of the data-type. The format is that required by the ?descr

dtype.isbuiltin Integer indicating how this dtype relates to the built-in dtypes. Read-only.

dtype.name A bit-width name for this data-type. Un-sized flexible data-type objects do not have this attribute.