import anydbm
cityDB = anydbm.open("city.dbm", 'r')
timeDB = anydbm.open("time.dbm", 'r')
flights = cityDB.keys()
print "Arrivals"
for flight in flights:
print ("Flight %s arrives from %s at %s" % (flight, cityDB[flight], timeDB[flight]))
cityDB.close()
timeDB.close()