New submission from Shailesh Hegde: https://docs.python.org/<version>/library/copy.html "Two problems often exist with deep copy operations that don’t exist with shallow copy operations: Recursive objects (compound objects that, directly or indirectly, contain a reference to themselves) may cause a recursive loop. Because deep copy copies everything it may copy too much, e.g., administrative data structures that should be shared even between copies." I believe the last line in above paragraph is missing a 'not' ahead of 'be shared'. It should read: "administrative data structures that should be not shared even between copies" ---------- assignee: docs@python components: Documentation messages: 226123 nosy: docs@python, shlsh priority: normal severity: normal status: open title: Documentation on deepcopy's problems is misleading versions: Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue22305> _______________________________________