decorator_classmethod.py

# -*- coding: UTF-8 -*-

class User(object):
    bar = 1
    def __init__(self, name, age, height):
        self.name = name
        self.age = age
        self.height = height

    # this function didnt use other class property
    @classmethod
    def update_user(cls, name, age):
        # ...
        print("update {name}, {age}".format(name=name, age=age))
        pass

    @classmethod
    def create_or_update_user(cls, name, age):
        try:
            # insert data to datadabe
            print('Insert user into user table')

            # calling class parameters
            print (cls.bar)
        # if duplicate after inseting
        except:
            # calling update function
            cls.update_user(name, age)

name = "Chester"
age = 25
User.create_or_update_user(name, age)