meta programacao

meta_programacao.py

class MyClass(object):
    """Legal."""
    def __init__(self, **kwargs):
        object.__init__(self)
        self._session = dict(**kwargs)
        self._session['idade'] = 98
        self._a_salvar = []

    def __getattr__(self, name):
        if name in self._session.keys():
            return self._session.get(name)
        return super(MyClass, self).__getattribute__(name)

    def __setattr__(self, key, value):
        if key not in ('_session', '_a_salvar', ):
            self._a_salvar.append((key, value, ))
            self._session[key] = value
        return super(MyClass, self).__setattr__(key, value)

    def __dir__(self):
        resp = super(MyClass, self).__dir__()
        resp.extend(self._session.keys())
        return list(set(resp))

    def save(self):
        print('salvando no banco')
        print(self._a_salvar)
        self._a_salvar = []


d = MyClass(nome='slex', idade=38)
print(d)
print(d.nome)
print(d.idade)

print(dir(d))

print(d._a_salvar)
d.nome = 'lott'
print(d._a_salvar)
d.save()