python class decorator example (Just for fun XDD)

class_deco_example.py

# -*- coding:utf-8 -*-
from __future__ import print_function
from functools import wraps

def log_deco(func):
    @wraps(func)
    def wrapped(*args, **kwargs):
        print("calling {}".format(func.__name__))
        return func(*args, **kwargs)

    return wrapped


def cls_deco(cls):
    for name, method in cls.__dict__.items():
        if not name.startswith("_"):
            setattr(cls, name, log_deco(method))

    return cls


@cls_deco
class MyClass(object):

    def add_one(self, x):
        return x+1

    def sub_one(self, x):
        return x-1

if __name__ == "__main__":
    me = MyClass()
    print(me.add_one(3))
    print(me.sub_one(10))