numpy.dtype.ndim

attribute

dtype.ndim

Number of dimensions of the sub-array if this data type describes a sub-array, and 0 otherwise.

New in version 1.13.0.

Examples

>>> x = np.dtype(float)
>>> x.ndim
0
>>> x = np.dtype((float, 8))
>>> x.ndim
1
>>> x = np.dtype(('i4', (3, 4)))
>>> x.ndim
2

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https://docs.scipy.org/doc/numpy-1.17.0/reference/generated/numpy.dtype.ndim.html