The Python language has no switch-case statements __python

Learning the Python language, it took a long time to find that Python does not have switch-case statements, view the official document that can be used if-elseif-elseif .... Replace.

Truth be told, none of this is a problem. is not a condition to judge it. -....... with If-elseif Certainly no problem, but also with other solutions, relatively simple is to use

Dictionary to achieve the same function. Write a dictionary, each key corresponds to a value is a method. such as switch = {"Valuea": Functiona, "Valueb": functionb, "VALUEC": Functionc}

Call can be like this

Try

switch["value"] () #执行相应的方法.

Except Keyerror as E:

Pass or Functionx #执行default部分

The simple code is as follows:

1 switch = {
 2     "a": Lambda x:x*2,
 3     "B": Lambda x:x*3,
 4     "C": Lambda x:x**x
 5}
 6 
 7 Try:
 8     swtich["C"] (6)
 9 except Keyerror as E:     

It's no problem if you don't bother writing a swtich class to achieve it. But is that really necessary?