numpy.dtype.alignment
attribute
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dtype.alignment
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The required alignment (bytes) of this data-type according to the compiler. More information is available in the C-API section of the manual. 
    © 2005–2019 NumPy Developers
Licensed under the 3-clause BSD License.
    https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.dtype.alignment.html