python joke code abusing the @ operator to ‘extend’ decorator syntax

stacked_decorator.py

"""
This is joke^Wenterprise code ab^H^Husing the ‘@’ operator to simulate
applying multiple decorators on a single line of code.
"""

# © 2022 wouter bolsterlee, licensed under SPDX BSD-3-Clause

import functools

# helper class and the magic ‘@stacked’ decorator itself

class _Stacked:
    def __init__(self, decorators):
        self.decorators = decorators
    def __matmul__(self, other):
        return type(self)(self.decorators + [other])
    def __call__(self, f):
        for d in reversed(self.decorators):
            f = d(f)
        return f

stacked = _Stacked([])


# two example decorators that simply print what they're doing

def decorator1(f):
    print(f"🚧  setting up decorator 1 for {f.__name__}()")
    @functools.wraps(f)
    def decorator(*args, **kwargs):
        print("🚀  decorator 1 runs")
        return f(*args, **kwargs)
    return decorator

def decorator2(f):
    print(f"🚧  setting up decorator 2 for {f.__name__}()")
    @functools.wraps(f)
    def decorator(*args, **kwargs):
        print("🌌  decorator 2 runs")
        return f(*args, **kwargs)
    return decorator


# lo and behold

@stacked @decorator1 @decorator2
def f(s):
    print(f"{s}  profit!")

@stacked @decorator1 @decorator2
def g(s):
    print(f"{s}  more profit!")

print("😬  ready to run?")
f("🤑")
g("💰")


# output:
#
#   🚧  setting up decorator 2 for f()
#   🚧  setting up decorator 1 for f()
#   🚧  setting up decorator 2 for g()
#   🚧  setting up decorator 1 for g()
#   😬  ready to run?
#   🚀  decorator 1 runs
#   🌌  decorator 2 runs
#   🤑  profit!
#   🚀  decorator 1 runs
#   🌌  decorator 2 runs
#   💰  more profit!

👏🏻