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# numpy.ma.MaskedArray.shrink_mask

`MaskedArray.``shrink_mask`()

  Reduce a mask to nomask when possible.

  Parameters : | None
  Returns : | None

  Examples

      >>> x = np.ma.array([[1,2 ], [3, 4]], mask=[0]*4)
      >>> x.mask
      array([[False, False],
             [False, False]], dtype=bool)
      >>> x.shrink_mask()
      >>> x.mask
      False