(self, distance)
Move the turtle backward by distance.

        Aliases: back | backward | bk

        Argument:
        distance -- a number

        Move the turtle backward by distance, opposite to the direction the
        turtle is headed. Do not change the turtle's heading.

        Example (for a Turtle instance named turtle):
        >>> turtle.position()
        (0.00, 0.00)
        >>> turtle.backward(30)
        >>> turtle.position()
        (-30.00, 0.00)
Move the turtle backward by distance.
Move the turtle backward by distance .
def back(self, distance):
        """Move the turtle backward by distance.

        Aliases: back | backward | bk

        Argument:
        distance -- a number

        Move the turtle backward by distance, opposite to the direction the
        turtle is headed. Do not change the turtle's heading.

        Example (for a Turtle instance named turtle):
        >>> turtle.position()
        (0.00, 0.00)
        >>> turtle.backward(30)
        >>> turtle.position()
        (-30.00, 0.00)
        """
        self._go(-distance)
def back ( self , distance ) : self . _go ( - distance )