Traffic Lights.py

from time import sleep

while True:
    print "Up Down: Green"
    print "Left Right: Red"
    sleep((60*5) - 60) #It will take us 1 minute to changes the lights, so 5 minutes - one minute
    print "Up Down: Yellow"
    print "Left Right: Red"
    sleep(30) # Let People Stop
    print "Up Down: Red"
    print "Left Right: Red"
    sleep(30) #30 seconds between Light changes
    print "Up Down: Red"
    print "Left Right: Green"
    sleep((60*5) - 60)
    print "Up Down: Red"
    print "Left Right: Yellow"
    sleep(30)
    print "Up Down: Red"
    print "Left Right: Red"
    sleep(30)