code: def equals(self, other, equiv=duck_array_ops.array_equiv):
          
          other = getattr(other, 'variable', other)
          try:
              return (self.dims == other.dims and
                      (self._data is other._data or
                       equiv(self.data, other.data)))
          except (TypeError, AttributeError):
              return False
docs: True if two Variables have the same dimensions and values;
          otherwise False.
  
          Variables can still be equal (like pandas objects) if they have NaN
          values in the same locations.
  
          This method is necessary because `v1 == v2` for Variables
          does element-wise comparisons (like numpy.ndarrays).