This is documentation for an old release of NumPy (version 1.14). Read this page Search for this page in the documentation of the latest stable release (version 2.2).

numpy.ndarray.itemsize

ndarray.itemsize

Length of one array element in bytes.

Examples

>>> x = np.array([1,2,3], dtype=np.float64)
>>> x.itemsize
8
>>> x = np.array([1,2,3], dtype=np.complex128)
>>> x.itemsize
16