Switch needs to be used in the program. I checked and found that there is no such syntax in python. After reading the official documentation, I found out that the official recommendation is to use if..elif...else to replace. If there are too many categories, the official recommendation is to construct a dictionary mapping in the function and then call function(value) to solve it.
switch statement:
'''switch(n) {case 1: 执行代码块 1 break;case 2: 执行代码块 2 break;default: n 与 case 1 和 case 2 不同时执行的代码 }'''
Example:
'''switch (day) {case 0: x="Today it's Sunday"; break; case 1: x="Today it's Monday"; break; case 2: x="Today it's Tuesday"; break; case 3: x="unknown"}'''
Dictionary method in Python:
day = 3 switcher = { 0:'Today it\'s Sunday', 1:'Today it\'s Monday', 2:'Today it\'s Tuesday' } #day_name =switcher[day] #并不能显示default day_name = switcher.get(day,'Unknown') print(day_name)
A simpler way The best way is to use lambda.
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