python decorator
#Decorator are just function that take function as first #parameter and return a function def logging(f): def decorator_function(*args, **kwargs): print('executing '+f.__name__) return f(*args, **kwargs) return decorator_function #Use it like this @logging def hello_world(): print('Hello World') #calling hello_world() prints out: #executing hello_world #Hello World
python decorators
# decorators are user to decorate functions like what to do before/after calling the function import time def delay_decorator(function): def wrapper_function(): print("-----------------------I am gonna greet you--------------------------") time.sleep(2)# waits for 2 seconds function() # calls the function time.sleep(1)# waits for 1 sec print("------------------How do you feel about that greet?-------------------") return wrapper_function @delay_decorator def greet(): print("Helllllloooooooooo") greet()
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