attribute
dtype.alignment
The required alignment (bytes) of this data-type according to the compiler.
More information is available in the C-API section of the manual.
>>> x = np.dtype('i4') >>> x.alignment 4
>>> x = np.dtype(float) >>> x.alignment 8
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https://docs.scipy.org/doc/numpy-1.17.0/reference/generated/numpy.dtype.alignment.html