将模型类添加到列表中

class User:
    def __init__(self, name, age):
        self.name = name
        self.age = age

# 创建一个用户列表
users = []

# 添加用户对象到列表中
user1 = User("Alice", 30)
user2 = User("Bob", 25)
users.append(user1)
users.append(user2)

# 打印用户列表
for user in users:
    print(f"Name: {user.name}, Age: {user.age}")

if not users:
    print("用户列表为空")
else:
    for user in users:
        print(f"Name: {user.name}, Age: {user.age}")

try:
    print(users[10].name)
except IndexError:
    print("索引越界，列表中没有该索引位置的用户")

for user in users:
    if isinstance(user, User):
        print(f"Name: {user.name}, Age: {user.age}")
    else:
        print("列表中包含非用户对象")