code: def set_y(self, y):
          "Set y position and reset x"
          self.x=self.l_margin
          if(y>=0):
              self.y=y
          else:
              self.y=self.h+f set_y(self, y):
          "Set y position and reset x"
          self.x=self.l_margin
          if(y>=0):
              self.y=y
          else:
              self.y=self.h+y
docs: Set y position and reset x