not working

#!/usr/bin/python
from array import array
import serial, sys
i = 3
ser = serial.Serial('/dev/ttyACM0', 9600)
a=array('i')

a.append(int(sys.argv[1]))
a.append(int(sys.argv[2]))
a.append(int(sys.argv[3]))

for i in range(0, 3):
        if not all(0 <= argv <= 180 for argv in sys.argv): sys.exit(0)
        else: print(a[i])