Rick Johnson <rantingrickjohn...@gmail.com> writes: > ... > Can you provide a real world example in which you need an > object which circularly references _itself_?
Circular structures occur in real life. One example are tracebacks (which are very helpful for debugging reasons). Keeping a traceback in a variable can easily introduce a cycle. Another example is a tree structure where you need both efficient access to children and ancestors of a node (see the DOM standard). -- https://mail.python.org/mailman/listinfo/python-list
