model.py

import json

class Model(object):
  def __init__(self, *args, **kwargs):
    if len(args) > 0 and isinstance(args[0], dict):
      for item in args[0]:
        setattr(self, item, args[0][item])
    for item in kwargs:
      setattr(self, item, kwargs[item])

  @staticmethod
  def from_json(raw):
    data = json.loads(raw)
    return Model.from_dict(data)

  @staticmethod
  def from_dict(data={}):
    return Model(data)

  def __setattr__(self, name, value):
    if self.__dict__.get(name):
      super(Model, self).__setattr__(name, value)
    else:
      self.__dict__[name] = value

  def __getattr__(self, name):
    return None

  def __getattribute__(self, name):
    return super(Model, self).__getattribute__(name)