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问题描述
我想知道,是否有 Python 等效的 case 语句,例如 VB 或 C# 上可用的示例?
I'd like to know, is there a Python equivalent for the case statement such as the examples available on VB or C#?
推荐答案虽然官方文档 很高兴不提供 switch,我看到了一个 解决方案使用字典.
While the official docs are happy not to provide switch, I have seen a solution using dictionaries.
例如:
# define the function blocks def zero(): print "You typed zero.\n" def sqr(): print "n is a perfect square\n" def even(): print "n is an even number\n" def prime(): print "n is a prime number\n" # map the inputs to the function blocks options = {0 : zero, 1 : sqr, 4 : sqr, 9 : sqr, 2 : even, 3 : prime, 5 : prime, 7 : prime, }然后调用等效的 switch 块:
Then the equivalent switch block is invoked:
options[num]()如果您严重依赖跌倒,这将开始分崩离析.
This begins to fall apart if you heavily depend on fall through.
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case/switch 语句的 Python 等效项是什么?
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