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__getattr__ and static vs. instantiated


Let's say I have:

class Persistable(object):

__attrs__ = {}

def __getattr__(self, name):
if name in self.__attrs__:
return self.__attrs__[name]['value']
return Object.__getattr__(self, name)

def __setattr__(self, name, value):
if name in self.__attrs__:
self.__attrs__[name]['value'] = value
Object.__setattr__(self, name, value)

And the I have:

class Person(Persistable):

__storm_table__ = 'person'

id = Int(primary=True)

__attrs__ = {
'name': {
'lang': 'en',
'value': Unicode(),

def __init__(self):
self.id = int(random.random() * 1000)

I can do this:

person = Person()
person.name = 'Jane Smith'

But I cannot do:

Person.name = 'Jane Smith'

or use Person.name in a Storm query like:

Person.name == 'Jane Smith'

__getattr__ is only called when using an instantiated class, and
never, it seems, in a static case. Why? How do I work around this?


P.S. This is Python 2.5 on Ubuntu Feisty x86.

Sep 11 '07 #1
0 911

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