attribute
dtype.subdtype
Tuple (item_dtype,shape) if this
describes a sub-array, and None otherwise.
The shape is the fixed shape of the sub-array described by this data type, and item_dtype the data type of the array.
If a field whose dtype object has this attribute is retrieved, then the extra dimensions implied by shape are tacked on to the end of the retrieved array.
Examples
>>> importnumpyasnp>>> x=np.dtype('8f')>>> x.subdtype(dtype('float32'), (8,))>>> x=np.dtype(np.int16)>>> x.subdtype>>>