python case使用例子

当谈到Python中的case使用例子时，通常是指使用`switch`语句来实现多分支条件判断。然而，Python并没有内置的`switch`语句，但我们可以使用其他方式来实现类似的功能。以下是一些常见的Python中case使用例子：

1. 使用if-elif-else语句：

def get_day_of_week(day):
    if day == 1:
        return "Monday"
    elif day == 2:
        return "Tuesday"
    elif day == 3:
        return "Wednesday"
    elif day == 4:
        return "Thursday"
    elif day == 5:
        return "Friday"
    elif day == 6:
        return "Saturday"
    elif day == 7:
        return "Sunday"
    else:
        return "Invalid day"

print(get_day_of_week(3))  # 输出: Wednesday

2. 使用字典映射：

def get_day_of_week(day):
    days = {
        1: "Monday",
        2: "Tuesday",
        3: "Wednesday",
        4: "Thursday",
        5: "Friday",
        6: "Saturday",
        7: "Sunday"
    }
    return days.get(day, "Invalid day")

print(get_day_of_week(3))  # 输出: Wednesday

3. 使用函数映射：

def monday():
    return "Monday"

def tuesday():
    return "Tuesday"

def wednesday():
    return "Wednesday"

def thursday():
    return "Thursday"

def friday():
    return "Friday"

def saturday():
    return "Saturday"

def sunday():
    return "Sunday"

def get_day_of_week(day):
    switcher = {
        1: monday,
        2: tuesday,
        3: wednesday,
        4: thursday,
        5: friday,
        6: saturday,
        7: sunday
    }
    func = switcher.get(day, lambda: "Invalid day")
    return func()

print(get_day_of_week(3))  # 输出: Wednesday

这些例子展示了在Python中实现类似`switch`语句的不同方法。根据具体的需求，你可以选择适合的方式来实现多分支条件判断。