code: def update(self, other, join='left', overwrite=True, filter_func=None,
                 errors='ignore'):
          
  
          if not isinstance(other, self._constructor):
              other = self._constructor(other)
  
          axis_name = self._info_axis_name
          axis_values = self._info_axis
          other = other.reindex(**{axis_name: axis_values})
  
          for frame in axis_values:
              self[frame].update(other[frame], join=join, overwrite=overwrite,
                                 filter_func=filter_func, errors=errors)
docs: Modify Panel in place using non-NA values from other Panel.
  
          May also use object coercible to Panel. Will align on items.
  
          Parameters
          ----------
          other : Panel, or object coercible to Panel
              The object from which the caller will be udpated.
          join : {'left', 'right', 'outer', 'inner'}, default 'left'
              How individual DataFrames are joined.
          overwrite : bool, default True
              If True then overwrite values for common keys in the calling Panel.
          filter_func : callable(1d-array) -> 1d-array<bool>, default None
              Can choose to replace values other than NA. Return True for values
              that should be updated.
          errors : {'raise', 'ignore'}, default 'ignore'
              If 'raise', will raise an error if a DataFrame and other both.
  
              .. versionchanged :: 0.24.0
                 Changed from `raise_conflict=False|True`
                 to `errors='ignore'|'raise'`.
  
          See Also
          --------
          DataFrame.update : Similar method for DataFrames.
          dict.update : Similar method for dictionaries.