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elif是else if的简写。else和elif语句也可以叫做子句,因为它们不能独立使用,两者都是出现在if、for、while语句内部的。else子句可以增加一种选择;而elif子句则是需要检查更多条件时会被使用,与if和else一同使用。
实例:
people = 30 cars = 40 buses = 15 if cars > people: print "We should take the cars.") elif cars < people: print "We should not take the cars.") else: print "We can't dicide.") if buses > cars: print "That's too many buses.") elif buses < cars: print "Maybe we could take the buses.") else: print "We still can't decide.") if people > buses: print "Alright, let's just take the buses.") else: print "Fine, let's stay home then.")
运行结果: