具有指定参数的函数

# 定义一个具有指定参数的函数
def greet(name, age):
    return f"Hello, {name}! You are {age} years old."

# 调用函数并传递参数
print(greet("Alice", 30))  # 输出: Hello, Alice! You are 30 years old.

# 使用关键字参数调用
print(greet(age=25, name="Bob"))  # 输出: Hello, Bob! You are 25 years old.

# 定义带有默认参数的函数
def greet_with_default(name, age=20):
    return f"Hello, {name}! You are {age} years old."

# 调用时可以不传递age参数
print(greet_with_default("Charlie"))  # 输出: Hello, Charlie! You are 20 years old.

# 定义可变参数函数
def sum_all(*args):
    return sum(args)

# 调用可变参数函数
print(sum_all(1, 2, 3, 4))  # 输出: 10

def add(a: int, b: int) -> int:
    if not isinstance(a, int) or not isinstance(b, int):
        raise TypeError("Both arguments must be integers.")
    return a + b

def required_params(param1, param2):
    return f"{param1} and {param2}"

# 正确调用
print(required_params("apple", "banana"))

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

def greet_user(user):
    return f"Hello, {user.name}! You are {user.age} years old."

user = User("Dave", 40)
print(greet_user(user))