python - 在switch-case语句(python)中为每种情况添加多行

Question

我是编程的新手，试图了解如何在python中使用switch-case语句。我的问题是当我尝试使用每种情况下有多行的语句时发生语法错误。这可能吗？我想念什么？如果不可能，那么switch-case语句如何有用？

这是我用来测试的代码

drop = random.randint(1,3)
inventory = []
def randomDrop(i):
    switcher ={
        1:
            "you got x"
            inventory.append(x)   #syntax error on this line         
        2: 
            "you got y",
            inventory.append(y)

        3: 
            "you got z",
            inventory.append(z)

    }
    return switcher.get(i,"you got nothing")
randomDrop(drop)

Answer 1

Python不支持支持开关大小写。您正在使用的东西是字典。它是键，值数据结构。
dict的语法:{key1:value1，key2:value2}
但是您使用值多的语句代替了值，这就是语法错误的原因。

drop = random.randint(1,3)
inventory = []
def randomDrop(i):
    switcher ={
        1:
            "you got x"
            inventory.append(x)   #multiple statement instead of value or reference        
        2: 
            "you got y",
            inventory.append(y)   #multiple statement instead of value or reference        

        3: 
            "you got z",
            inventory.append(z)   #multiple statement instead of value or reference        

    }
    return switcher.get(i,"you got nothing")
randomDrop(drop)

请改用 if-else。

inventory = []
def randomDrop(i):
    if i == 1:
        inventory.append(x)
        return 'you got x'
    elif i == 2:
        inventory.append(y)
        return 'you got y'
    elif i == 3:
        inventory.append(z)
        return 'you got z'
    else:
        return 'you got nothing'

drop = random.randint(1,3)
randomDrop(drop)

看到:
https://docs.python.org/3/tutorial/controlflow.html