python装饰器
且任容枯 Lv4
  2025-11-05 22:31:05 2025-11-05 22:31  

不带参数的装饰器

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def dolog(func):
    def wrapper(*args, **kwargs):
        print(f"Calling function '{func.__name__}' with arguments {args} and {kwargs}")
        result = func(*args, **kwargs)
        print(f"Function '{func.__name__}' returned {result}")
        return result
    return wrapper


# dolog(func)(a, b)

@dolog
def func(a , b):
    return a + b


print(func(2, 3))

Calling function 'func' with arguments (2, 3) and {}
Function 'func' returned 5
5

带参数的装饰器

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def dolog(returns=False):
    def decorator(func):
        def wrapper(*args, **kwargs):
            result = func(*args, **kwargs)
            print(f"Function '{func.__name__}' called with args: {args}, kwargs: {kwargs}")
            if returns:
                print(f"Function '{func.__name__}' returned: {result}")
            return result
        return wrapper
    return decorator


# dolog(returns=True)(func)(a, b)

@dolog(returns=False)
def func(a , b):
    return a + b


print(func(2, 3))