people = 20cats = 30dogs = 15if people < cats:　　print "Too many cats! The world is doomed!"if people > cats:　　print "Not many cats! The world is saved!"if people < dogs:　　print "The world is drooled on!"if people > dogs:　　print "The world is dry!"dogs += 5if people >= dogs:　　print "People are greater than or equal to dogs."if people <= dogs:　　print "People are less than or equal to dogs."if people == dogs:　　print "People are dogs."