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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Document pickle behavior for subclasses of dicts/lists","articleBody":"BPO | [4712](https://bugs.python.org/issue4712)\n--- | :---\nNosy | @birkenfeld, @rhettinger, @pitrou, @avassalotti, @mitsuhiko, @ericsnowcurrently, @serhiy-storchaka\nDependencies | \u003cli\u003ebpo-3635: pickle.dumps cannot save instance of dict-derived class that overrides __getattribute__\u003c/li\u003e\n\n\u003csup\u003e*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*\u003c/sup\u003e\n\n\u003cdetails\u003e\u003csummary\u003eShow more details\u003c/summary\u003e\u003cp\u003e\n\nGitHub fields:\n```python\nassignee = None\nclosed_at = None\ncreated_at = \u003cDate 2008-12-21.17:24:03.973\u003e\nlabels = ['easy', 'type-bug', 'docs']\ntitle = 'Document pickle behavior for subclasses of dicts/lists'\nupdated_at = \u003cDate 2015-11-26.22:11:25.100\u003e\nuser = 'https://github.com/birkenfeld'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2015-11-26.22:11:25.100\u003e\nactor = 'serhiy.storchaka'\nassignee = 'docs@python'\nclosed = False\nclosed_date = None\ncloser = None\ncomponents = ['Documentation']\ncreation = \u003cDate 2008-12-21.17:24:03.973\u003e\ncreator = 'georg.brandl'\ndependencies = ['3635']\nfiles = []\nhgrepos = []\nissue_num = 4712\nkeywords = ['easy']\nmessage_count = 4.0\nmessages = ['78154', '83098', '255434', '255439']\nnosy_count = 7.0\nnosy_names = ['georg.brandl', 'rhettinger', 'pitrou', 'alexandre.vassalotti', 'aronacher', 'eric.snow', 'serhiy.storchaka']\npr_nums = []\npriority = 'normal'\nresolution = None\nstage = 'needs patch'\nstatus = 'open'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue4712'\nversions = ['Python 2.7', 'Python 3.4', 'Python 3.5', 'Python 3.6']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-101466\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/birkenfeld","@type":"Person","name":"birkenfeld"},"datePublished":"2008-12-21T17:24:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/48962/cpython/issues/48962"}