theres nothing about the given code that should cause any issue (and I tried it on 0.5.1). Upgrade to 0.5.5 in any case and that will almost certainly resolve the issue.
rajasekhar911 wrote: > > I am using declarative method to map objects. > I am getting the following error when i try to create the object > > My Class is > from sqlalchemy.ext.declarative import declarative_base > DeclarativeBase = declarative_base() > class User(DeclarativeBase): > __tablename__='managed_nodes' > id = Column(String(50), primary_key=True) > username=Column(String(50)) > > def __init__(self,username = None,id = None): > self.username = username > if not id: > self.id = username > else: > self.id = id > > u = User(username='xxx') > > Module model.User:63 in __init__ > self.username = username > >>> self.username = username > Module sqlalchemy.orm.attributes:151 in __set__ view > << def __set__(self, instance, value): > self.impl.set(instance_state(instance), value, None) > > def __delete__(self, instance): >>> self.impl.set(instance_state(instance), value, None) > Module sqlalchemy.orm.attributes:440 in set view > << old = self.get(state) > else: > old = state.dict.get(self.key, NO_VALUE) > > state.modified_event(self, False, old) >>> old = state.dict.get(self.key, NO_VALUE) > AttributeError: 'NoneType' object has no attribute 'dict' > > what can be the possible reason?? > my sqlalchemy version is 0.5.1 on centos5.2... > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
