bool move;
int direction;

startMovement()
    move = true;

stopMovement()
    move = false;

changeDirection()


button.bind('<ButtonPress-1>',start_motor)
button.bind('<ButtonRelease-1>',stop_motor)
root.mainloop()

while(true) {
    if (move && KEYUP) {
        positionY++;
    } else if (move && eventtype.KEYDOWN    ) {
        positionY--;
    } else if ( !move) {
        positionY = positionY;
    }
}