code: def y_tic_points(self, interval):
          "Return the list of Y values for which tick marks and grid lines are drawn."
          if type(interval) == FunctionType:
              return interval(*self.y_range)
  
          return self.y_coord.get_tics(self.y_range[0], self.y_range[1], intervalf y_tic_points(self, interval):
          "Return the list of Y values for which tick marks and grid lines are drawn."
          if type(interval) == FunctionType:
              return interval(*self.y_range)
  
          return self.y_coord.get_tics(self.y_range[0], self.y_range[1], interval)
docs: Return the list of Y values for which tick marks and grid lines are drawn.