Python Decorators Examples

# Decorator without parameters
import functools

def my_decorator(func):
@functools.wraps(func)
def functions_that_runs_func():
print("In the decorator")
func()
print("After the decorator")
return function_that_runs_func

@my_decorator
def my_functions():
print("I'm the function")

my_function()

# Decorator with parameters
def decorator_with_arguments(number):
def my_decorator(func):
@functools.wraps(func)
def function_that_runs_func(*args, **kwargs):
print("In the decorator")
if number == 56:
print("Not running the function")
else:
func(*args, **kwargs)
print("After the decorator")
return function_that_runs_func
return my_decorator

@decorator_with_arguments(57)
def my_function_too(x, y):
print (x+y)

my_function_too(57, 67)