Python_练习_24.4.7

练习1

def GetAge(age):
    try:
        if age <= 0:
            raise Exception("输入的年龄不符合要求")
    except ValueError:
        print("年龄必须大于0")
        raise


GetAge(-1)

练习2

num_one = int(input("请输入被除数："))
num_two = int(input("请输入除数："))
assert num_two != 0, "除数不能为0"
shang = num_one / num_two
print(shang)

练习3

class CustomException(Exception):
    def __init__(self, msg):
        self.msg = msg
        super(CustomException, self).__init__(self.msg)


user_input = input("请输入一个水果名称：")
allow_value = ["apple", "banana"]


def process_user_input(user_input):
    print(user_input)


try:
    if user_input not in allow_value:
        raise CustomException(f"输入的商品不在列表中{user_input}")
    process_user_input(user_input)
except CustomException:
    print("输入的内容无效")

练习4

class ShortInputError(Exception):
    def __init__(self, length, atleast):
        self.length = length
        self.atleast = atleast

try:
    text = input("请输入密码：")
    if len(text) < 3:
        raise ShortInputError(len(text), 3)
except ShortInputError as result:
    print("ShortInputError:输入的长度是%d,长度至少应该是%d" % (result.length, result.atleast))
else:
    print('密码设置成功')