如何在Python中创建将一个函数应用于另一个函数的输入的函数？

def decorator(func):
    def wrapper(*args, **kwargs):
        # 在调用目标函数之前的操作
        print("Before calling the function")
        
        # 调用目标函数
        result = func(*args, **kwargs)
        
        # 在调用目标函数之后的操作
        print("After calling the function")
        
        return result
    
    return wrapper

@decorator
def target_function(input):
    # 目标函数的实现
    print("Target function is called with input:", input)
    return input * 2

# 调用被装饰后的函数
result = target_function(10)
print("Result:", result)

Before calling the function
Target function is called with input: 10
After calling the function
Result: 20