numpy.ma.MaskedArray.__getstate__
method
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MaskedArray.__getstate__()[source]
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Return the internal state of the masked array, for pickling purposes. 
    © 2005–2019 NumPy Developers
Licensed under the 3-clause BSD License.
    https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.ma.MaskedArray.__getstate__.html