decorated_function = new_decorator(decorated_function) #输出: #I am a decorator! I am executed only when you decorate a function. #As the decorator, I return the wrapped function # 让我们调用这个函数 decorated_function() #输出: #I am the wrapper around the decorated function. I am called...
Here, when we call thedivide()function with the arguments(2,5), theinner()function defined in thesmart_divide()decorator is called instead. Thisinner()function calls the originaldivide()function with the arguments2and5and returns the result, which is0.4. Similarly, When we call thedivide()f...
It retains access to the function being decorated and any additional state or arguments defined in the decorator function. For example: def simple_decorator(func): def wrapper(): print("Before the function call") func() print("After the function call") return wrapper @simple_decorator def ...
我们说过一个Decorator会修改另外一个方法, 这个例子可能会帮助你理解这其中的意思. 正如你在这个例子中所看到的一样, logging_decorator 所返回的新方法和a_function很相似,只是多增加了日志功能。 在这个例子中,logging_decorator接收一个方法作为参数, 返回另一个包装过的方法. 每当logging_decorator返回的方法被调用...
()#outputs: I am a stand alone function, don't you dare modify me# Well, you can decorate it to extend its behavior.# Just pass it to the decorator, it will wrap it dynamically in# any code you want and return you a new function ready to be used:# 为了给这个函数添加一些功能,你...
Python hello_decorator.py def decorator(func): def wrapper(): print("Something is happening before the function is called.") func() print("Something is happening after the function is called.") return wrapper def say_whee(): print("Whee!") say_whee = decorator(say_whee) ...
A function decorator is applied to a function definition by placing it on the line before that function definition begins. For example: @myDecorator def aFunction(): print "inside aFunction" When the compiler passes over this code,aFunction()is compiled and the resulting function object is pa...
def debug_decorator(func): @functools.wraps(func) def wrapper(*args, **kwargs): print(f"Calling function {func.__name__} with arguments: {args}, {kwargs}") result = func(*args, **kwargs) print(f"Function {func.__name__} returned: {result}") ...
def my_decorator(func): def wrapper(*args, **kwargs): print("Positional arguments:", args) # 输出(1, 2) 元组 print("Keyword arguments:", kwargs) # 输出{'z': 3} 字典 result = func(*args, **kwargs) # 实际调用时会将元组和字典进行解包,并赋值给my_function函数 return result return...
A function decorator is applied to a function definition by placing it on the line before that function definition begins. For example: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 @myDecoratordef aFunction(): print("inside aFunction") When the compiler passes over this code, aFunction(...