On Wednesday, February 28, 2018 at 11:44:39 PM UTC-6, Paul Rubin wrote: > Rick Johnson <rantingrickjohn...@gmail.com> writes: > > Can you provide a real world example in which you need an > > object which circularly references _itself_? > > DOM trees are a classic example (see the various DOM > modules in the Python stdlib). Non-leaf nodes have a list > of child nodes, child nodes have pointers back upwards to > their parent, and each child node has pointers to its left > and right siblings if they exist. It's all very circular.
Hmm, Yes. I am familiar with these types of tree structures. But i don't remember encountering any nodes which explicitly referenced _themselves_ in the manner that Chris presented: class Node(object): def __init__(self): self.self = self self.children = [] ... True, each node may possibly save a reference to a parent node, and also contain N child nodes (either proxies or actual instances) but not something akin to what Chris presented earlier in this thread. But if i missed something, feel free to elaborate... -- https://mail.python.org/mailman/listinfo/python-list