              return
          self._graph.set_yscale_type(self._vars["scale"].get())
  
      @classmethod
      def _set_help(cls, action):
          """ Set the help text for option buttons.
  
          Parameters
          ----------
          action: string
 
</s> remove         action: string
 </s> add         action: str </s> remove     def _opts_buttons(self, frame):
 </s> add     def _opts_buttons(self, frame: ttk.Frame) -> None: </s> remove         frame: `tkinter.ttk.Frame`
 </s> add         frame: :class:`tkinter.ttk.Frame` </s> remove     def _graph_scale(self, *args):  # pylint: disable=unused-argument
        """ Action for changing graph scale. """
 </s> add     def _graph_scale(self, *args) -> None:  # pylint: disable=unused-argument
        """ Action for changing graph scale.

        Parameters
        ----------
        args: tuple
            Required for TK Callback but unused
        """ </s> remove     def _calc_trend(cls, data):
 </s> add     def _calc_trend(cls, data: np.ndarray) -> np.ndarray:
    def _set_help(cls, action: str) -> str:
              return
          self._graph.set_yscale_type(self._vars["scale"].get())
  
      @classmethod
    def _set_help(cls, action: str) -> str:
          """ Set the help text for option buttons.
  
          Parameters
          ----------
          action: string
keep keep keep keep replace keep keep keep keep keep
 Bugfixes:
  - Stats graph - Handle NaNs in data
  - logger - de-elevate matplotlib font messages 
lib/gui/popup_session.py