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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"array.array should remain immutable: add Py_TPFLAGS_IMMUTABLETYPE flag","articleBody":"BPO | [43908](https://bugs.python.org/issue43908)\n--- | :---\nNosy | @gvanrossum, @vstinner, @tiran, @markshannon, @serhiy-storchaka, @gvanrossum, @corona10, @pablogsal, @miss-islington, @shihai1991, @erlend-aasland, @shreyanavigyan\nPRs | \u003cli\u003epython/cpython#25520\u003c/li\u003e\u003cli\u003epython/cpython#25696\u003c/li\u003e\u003cli\u003epython/cpython#25697\u003c/li\u003e\u003cli\u003epython/cpython#25710\u003c/li\u003e\u003cli\u003epython/cpython#25714\u003c/li\u003e\u003cli\u003epython/cpython#25743\u003c/li\u003e\u003cli\u003epython/cpython#25792\u003c/li\u003e\u003cli\u003epython/cpython#25816\u003c/li\u003e\u003cli\u003epython/cpython#26115\u003c/li\u003e\u003cli\u003epython/cpython#26351\u003c/li\u003e\u003cli\u003epython/cpython#26766\u003c/li\u003e\u003cli\u003epython/cpython#27001\u003c/li\u003e\nFiles | \u003cli\u003e[patch.diff](https://bugs.python.org/file49970/patch.diff \"Uploaded as text/plain at 2021-04-22.08:20:29 by @erlend-aasland\")\u003c/li\u003e\u003cli\u003e[apply-to-all.diff](https://bugs.python.org/file49980/apply-to-all.diff \"Uploaded as text/plain at 2021-04-23.19:49:28 by @erlend-aasland\")\u003c/li\u003e\u003cli\u003e[list.txt](https://bugs.python.org/file49987/list.txt \"Uploaded as text/plain at 2021-04-26.10:24:34 by @erlend-aasland\")\u003c/li\u003e\u003cli\u003e[apply-to-all.diff](https://bugs.python.org/file49990/apply-to-all.diff \"Uploaded as text/plain at 2021-04-27.06:31:28 by @shreyanavigyan\"): modified\u003c/li\u003e\u003cli\u003e[tests_log.txt](https://bugs.python.org/file49994/tests_log.txt \"Uploaded as text/plain at 2021-04-27.15:52:25 by @shreyanavigyan\")\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 = 'https://github.com/vstinner'\nclosed_at = None\ncreated_at = \u003cDate 2021-04-21.18:52:19.855\u003e\nlabels = ['type-bug', 'library', '3.10', '3.11']\ntitle = 'array.array should remain immutable: add Py_TPFLAGS_IMMUTABLETYPE flag'\nupdated_at = \u003cDate 2022-01-26.17:39:44.786\u003e\nuser = 'https://github.com/gvanrossum'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2022-01-26.17:39:44.786\u003e\nactor = 'vstinner'\nassignee = 'vstinner'\nclosed = False\nclosed_date = None\ncloser = None\ncomponents = ['Library (Lib)']\ncreation = \u003cDate 2021-04-21.18:52:19.855\u003e\ncreator = 'gvanrossum'\ndependencies = []\nfiles = ['49970', '49980', '49987', '49990', '49994']\nhgrepos = []\nissue_num = 43908\nkeywords = ['patch']\nmessage_count = 120.0\nmessages = ['391540', '391578', '391582', '391584', '391585', '391595', '391596', '391597', '391598', '391600', '391636', '391701', '391720', '391728', '391730', '391756', '391816', '391846', '391866', '391867', '391868', '391895', '391901', '391918', '391922', '391930', '391932', '391933', '391935', '391938', '391946', '391947', '391954', '391959', '391960', '391963', '391964', '391971', '391993', '392029', '392038', '392076', '392079', '392080', '392083', '392085', '392086', '392087', '392088', '392089', '392092', '392098', '392101', '392103', '392105', '392236', '392237', '392238', '392240', '392247', '392248', '392250', '392251', '392262', '392263', '392264', '392283', '392284', '392285', '392286', '392287', '392288', '392311', '392312', '392314', '392316', '392318', '392324', '392325', '392389', '392402', '392403', '392407', '392408', '392409', '392410', '392413', '392416', '392420', '392421', '392422', '392430', '392439', '392440', '392441', '392443', '392445', '392446', '392488', '392638', '392670', '392671', '392693', '393618', '394314', '394315', '394319', '395178', '395983', '395988', '396829', '396830', '397134', '397163', '397164', '397170', '397171', '397232', '411782', '411784']\nnosy_count = 12.0\nnosy_names = ['gvanrossum', 'vstinner', 'christian.heimes', 'Mark.Shannon', 'serhiy.storchaka', 'Guido.van.Rossum', 'corona10', 'pablogsal', 'miss-islington', 'shihai1991', 'erlendaasland', 'shreyanavigyan']\npr_nums = ['25520', '25696', '25697', '25710', '25714', '25743', '25792', '25816', '26115', '26351', '26766', '27001']\npriority = None\nresolution = None\nstage = 'patch review'\nstatus = 'open'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue43908'\nversions = ['Python 3.10', 'Python 3.11']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/gvanrossum","@type":"Person","name":"gvanrossum"},"datePublished":"2021-04-21T18:52:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":123},"url":"https://github.com/88074/cpython/issues/88074"}