Self Referencing Class Definition in python

Question

is there any way to reference a class name from within the class declaration? an example follows:

class Plan(SiloBase):
    cost = DataField(int)
    start =         


        

Answer 1

i've got a metaclass that reads this information and does some setup

Most frameworks that use metaclasses provide a way to resolve this. For instance, Django:

subplan = ForeignKey('self')

Google App Engine:

subplan = SelfReferenceProperty()

The problem with solutions like tacking an additional property on later or using __new__ is that most ORM metaclasses expect the class properties to exist at the time when the class is created.