import time
from pyb import Servo

s1 = Servo(1) # P7
s2 = Servo(2) # P8

while(True):
s2.angle(-90)
time.sleep(2)
print(1)
s2.angle(0)
time.sleep(2)
print(2)
s2.angle(90)
time.sleep(2)
print(3)