numpy.ndarray.__deepcopy__
method
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ndarray.__deepcopy__(memo, /) → Deep copy of array.
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Used if copy.deepcopyis called on an array.
    © 2005–2019 NumPy Developers
Licensed under the 3-clause BSD License.
    https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.ndarray.__deepcopy__.html