Python中Switch Case的替换语句是什么?
与我们之前使用的所有其他编程语言不同,Python没有switch或case语句。 为了解决这个问题,我们使用字典映射(dictionary mapping)。
# Function to convert number into string
# Switcher is dictionary data type here
def numbers_to_strings(argument):
switcher = {
0: "zero",
1: "one",
2: "two",
}
# get() method of dictionary data type returns
# value of passed argument if it is present
# in dictionary otherwise second argument will
# be assigned as default value of passed argument
return switcher.get(argument, "nothing")
# Driver program
if __name__ == "__main__":
argument=0
print numbers_to_strings(argument)
此代码类似于C++中的给定代码:
#include<bits/stdc++.h>
using namespace std;
// Function to convert number into string
string numbers_to_strings(int argument){
switch(argument) {
case 0:
return "zero";
case 1:
return "one";
case 2:
return "two";
default:
return "nothing";
};
};
// Driver program
int main()
{
int argument = 0;
cout << numbers_to_strings(argument);
return 0;
}
输出:
Zero