[已解决]if else

xxlxxl

weather = input("What is the weather? ").lower()

if weather == "sunny":
    print("Time to ride a crocodile!")
if weather == "rainy":
    print("Rainy dance time!")
if weather == "tornado":
    print("Tornado party!")
else:
    print("Watch TV!")

如果我输入sunny，为什么输出的是

Time to ride a crocodile！
Watch TV!

当他判定是sunny以后这个不就结束了吗？

最佳答案

月排行榜 / 总排行榜

sunrise085

2020-9-13 18:07:16

你写的是多个if，但是你想要的应该是 if …elif…elif…else…
多个if会都进行判断，可能会进入多个分支；但是 if …elif…elif…else…进行判断只进入一个分支

weather = input("What is the weather? ").lower()

if weather == "sunny":
    print("Time to ride a crocodile!")
elif weather == "rainy":
    print("Rainy dance time!")
elif weather == "tornado":
    print("Tornado party!")
else:
    print("Watch TV!")

跳转到最佳答案楼层

疾风怪盗

你没理解if...elif...elif...else的意思

weather = input("What is the weather? ").lower()

if weather == "sunny":
    print("Time to ride a crocodile!")
elif weather == "rainy":
    print("Rainy dance time!")
elif weather == "tornado":
    print("Tornado party!")
else:
    print("Watch TV!")

疾风怪盗

你这样写，相当于分成了三个判断

weather = input("What is the weather? ").lower()

if weather == "sunny":
    print("Time to ride a crocodile!")

if weather == "rainy":
    print("Rainy dance time!")

if weather == "tornado":
    print("Tornado party!")
else:
    print("Watch TV!")

sunrise085

你写的是多个if，但是你想要的应该是 if …elif…elif…else…
多个if会都进行判断，可能会进入多个分支；但是 if …elif…elif…else…进行判断只进入一个分支

weather = input("What is the weather? ").lower()

if weather == "sunny":
    print("Time to ride a crocodile!")
elif weather == "rainy":
    print("Rainy dance time!")
elif weather == "tornado":
    print("Tornado party!")
else:
    print("Watch TV!")

靳子轩

Python自动把else和turnado的if配对了，你没有输入turnado，所以就打印Watch TV了