hi, i am a python newbie..while trying out some message passing between two object instances i came across a problem moduleA.py -------------------- import moduleB class MyClassA: def __init__(self): self.age=0 self.address='' def createClassB(self): self.objB=moduleB.MyClassB() def validate(self,age,address): if(age >= 100 or address==''): self.age=20; self.address="Broadway,NewYork" self.objB.display(self.age,self.address) def callB(self): self.objB.execute()
if __name__ == "__main__": objA=MyClassA() objA.createClassB() objA.callB() moduleB.py ------------------ import moduleA class MyClassB: def __init__(self): self.createA() def createA(self): self.objA=moduleA.MyClassA() def execute(self): self.objA.validate(111,'') def display(self,age,address): print 'displaying:',str(age),address when i run the code i get a message AttributeError: MyClassA instance has no attribute 'objB' Do i have to put a placeholder for objB in __init__ of MyClassA ? is that why i get this error?someone please tell me how i can solve this? I tried to put self.objB=None but it didn't work..(i was thinking of java style objB=NULL ) please help thanks jim -- http://mail.python.org/mailman/listinfo/python-list