python有switch语句吗

Python 没有内置的 switch 语句，但可以使用 if-elif-else 系列语句来实现类似的功能。另外，还可以使用字典和函数操作来模仿 switch。如下所示：

1. if-elif-else 语句：

x = 5
if x == 1:
    print("number is 1")
elif x == 2:
    print("number is 2")
elif x == 3:
    print("number is 3")
else:
    print("number is not between 1 and 3")

2. 字典:

def one():
    print("number is 1")

def two():
    print("number is 2")

def three():
    print("number is 3")

switcher = {
        1: one,
        2: two,
        3: three
    }

switcher.get(x, lambda:print("number is not between 1 and 3"))()

3. 函数操作:

def one():
    print("number is 1")

def two():
    print("number is 2")

def three():
    print("number is 3")

def switch(x):
    dictionary = {
        1:one,
        2:two,
        3:three
    }
    dictionary.get(x, lambda:print("number is not between 1 and 3"))()

switch(1) #number is 1
switch(4) #number is not between 1 and 3