Decorators In Python

A decorator takes in a function, adds some functionality and returns it.

Functions and methods are called callable as they can be called.

Any object which implements the special method __call__() is termed callable.

A decorator is a callable that returns a callable.

A decorator takes in a function, adds some functionality and returns it.

def make_pretty(func):
           def inner():
                 print("I got decorated")
                 func()
           return inner

def ordinary():
           print("I am ordinary")

ordinary() #outputs "I am ordinary"
# let's decorate this ordinary function
pretty = make_pretty(ordinary)
pretty()

#outputs:
I got decorated
I am ordinary
#make_pretty() is a decorator.
#pretty = make_pretty(ordinary)
#The function ordinary() got decorated and the returned function was given the name pretty.