decorators in python syntax code example
Example 1: python function decorator
def logging(f):
def decorator_function(*args, **kwargs):
print('executing '+f.__name__)
return f(*args, **kwargs)
return decorator_function
@logging
def hello_world():
print('Hello World')
Example 2: python decorators
import time
def delay_decorator(function):
def wrapper_function():
print("-----------------------I am gonna greet you--------------------------")
time.sleep(2)
function()
time.sleep(1)
print("------------------How do you feel about that greet?-------------------")
return wrapper_function
@delay_decorator
def greet():
print("Helllllloooooooooo")
greet()
Example 3: python decorator
import functools
def repeat(num_times):
def decorator_repeat(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
for _ in range(num_times):
result= func(*args, **kwargs)
return result
return wrapper
return decorator_repeat
@repeat(num_times= 3)
def greet(name):
print(f"Hello {name}")
greet("thomas")