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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Delayed exception using non-text encodings with TextIOWrapper","articleBody":"BPO | [20404](https://bugs.python.org/issue20404)\n--- | :---\nNosy | @birkenfeld, @ncoghlan, @pitrou, @vstinner, @larryhastings, @serhiy-storchaka\nFiles | \u003cli\u003e[issue20404_check_valid_textio_codec.diff](https://bugs.python.org/file33747/issue20404_check_valid_textio_codec.diff \"Uploaded as text/plain at 2014-01-27.12:29:16 by @ncoghlan\"): Check codec validity in TextIOWrapper.__init__\u003c/li\u003e\u003cli\u003e[issue20404_check_valid_textio_codec_v2.diff](https://bugs.python.org/file33856/issue20404_check_valid_textio_codec_v2.diff \"Uploaded as text/plain at 2014-02-02.05:08:58 by @ncoghlan\"): Rationalise codec lookups during TextIOWrapper creation\u003c/li\u003e\u003cli\u003e[issue20404_check_valid_textio_codec_v3.diff](https://bugs.python.org/file33899/issue20404_check_valid_textio_codec_v3.diff \"Uploaded as text/plain at 2014-02-04.10:53:38 by @ncoghlan\"): Updated for Serhiy's comments\u003c/li\u003e\u003cli\u003e[issue20404_check_valid_textio_codec-3.3.patch](https://bugs.python.org/file34221/issue20404_check_valid_textio_codec-3.3.patch \"Uploaded as text/plain at 2014-02-25.18:38:20 by @serhiy-storchaka\")\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/ncoghlan'\nclosed_at = \u003cDate 2014-02-04.12:14:10.985\u003e\ncreated_at = \u003cDate 2014-01-27.05:01:16.793\u003e\nlabels = ['type-bug', 'expert-IO', 'release-blocker']\ntitle = 'Delayed exception using non-text encodings with TextIOWrapper'\nupdated_at = \u003cDate 2015-05-31.17:21:42.361\u003e\nuser = 'https://github.com/ncoghlan'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2015-05-31.17:21:42.361\u003e\nactor = 'python-dev'\nassignee = 'ncoghlan'\nclosed = True\nclosed_date = \u003cDate 2014-02-04.12:14:10.985\u003e\ncloser = 'python-dev'\ncomponents = ['IO']\ncreation = \u003cDate 2014-01-27.05:01:16.793\u003e\ncreator = 'ncoghlan'\ndependencies = []\nfiles = ['33747', '33856', '33899', '34221']\nhgrepos = []\nissue_num = 20404\nkeywords = ['patch']\nmessage_count = 12.0\nmessages = ['209396', '209399', '209438', '209948', '209949', '209970', '210197', '210198', '210217', '212195', '212539', '244549']\nnosy_count = 7.0\nnosy_names = ['georg.brandl', 'ncoghlan', 'pitrou', 'vstinner', 'larry', 'python-dev', 'serhiy.storchaka']\npr_nums = []\npriority = 'release blocker'\nresolution = 'fixed'\nstage = 'resolved'\nstatus = 'closed'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue20404'\nversions = ['Python 3.4']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/ncoghlan","@type":"Person","name":"ncoghlan"},"datePublished":"2014-01-27T05:01:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/64603/cpython/issues/64603"}