Python-сообщество

 import shelve
class Person:
    def __init__(self, name, job=None, pay = 0):
        self.name = name
        self.job = job
        self.pay = pay
    def __str__(self):
        return "[Person: %s, %s]" % (self.name, self.pay)
class Manager:
    def __init__(self, name, pay):
        self.person = Person(name, 'mgr', pay)           
    def __getattr__(self, attr):
        return getattr(self.person, attr);        
    def __str__(self):
        return str(self.person)        
# создание объектов
sue = Person('Sue Jackson')
michael = Person('Michael Wilson', 'dev', 19000)
john = Manager('John Smith', 50000)
# запись объектов в хранилище
db = shelve.open('persondb')
for x in (sue, michael, john):
    db[x.name] = x
db.close()
# проверка корректности записи
db2 = shelve.open('persondb')
for x in db2:
    print(db2[x])
db2.close()

     print(x)

 class Manager:
        #...
        def __getattr__(self, attr):
                return getattr(self.person, attr);  

 class Manager:
    def __getattr__(self, attr):
        return getattr(object.__getattribute__(self, 'person'), attr)   # вместо getattr(self.person, attr);