sleep(.5)
start = input('any key to start')
print('both wheels forward')
motors.forward(a, 200, 200)
sleep(.5)
print('stopping...')
motors.stop(a)
sleep(.5)
print('both wheels backward')
motors.reverse(a, 200, 200)
sleep(.5)
print('stopping...')
motors.stop(a)
sleep(.5)
while (1):
start = input('any key to start')
print('tank turn right')
motors.drive(a, 200, -200)
sleep(.5)
print('stopping...')
motors.stop(a)
sleep(.5)
print('tank turn left')
motors.drive(a, -200, 200)
sleep(.5)
print('stopping...')
motors.stop(a)
sleep(.5)
