On 03/25/2018 04:37 AM, Jugurtha Hadjar wrote: > On 03/24/2018 07:14 PM, D'Arcy Cain wrote: >> class C1(dict): >> class C2(object): >> def f(self): >> return X['field'] >> >> O1 = C1() >> O1['field'] = 1 >> O2 = O1.C2() >> print(O2.f()) > > I prefer to *feed* the child to the parent or vice versa. Simplifies > things like testing.
That was my original solution but it seems clumsy. O2 = O1.C2(O1) IOW passing the parent object to the child class. It just seems like there should be some way to access the parent object in C2. > Something like this: > > class C1(object): ... > class C2(object): > def __init__(self, parent=None): > self.parent = parent Perhaps your email client is collapsing leading spaces but that isn't what I wrote. The C2 class is supposed to be a member of C1. That's why I called it as O1.C2() instead of just C2(). I was hoping that by doing so that the data in O1 would somehow be available without having to explicitly pass it as an argument. However, I would have made the parameter required. I don't see the point of calling another method to add it in later. Of course, if I do that there's no point in making C2 part of C1. What you wrote would be just fine and obvious. -- D'Arcy J.M. Cain Vybe Networks Inc. http://www.VybeNetworks.com/ IM:da...@vex.net VoIP: sip:da...@vybenetworks.com -- https://mail.python.org/mailman/listinfo/python-list
