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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Argument Clinic generates invalid code for optional parameter","articleBody":"BPO | [20196](https://bugs.python.org/issue20196)\n--- | :---\nNosy | @birkenfeld, @larryhastings, @serhiy-storchaka\nFiles | \u003cli\u003e[larry.zero.positional.parameters.patch.1.txt](https://bugs.python.org/file33397/larry.zero.positional.parameters.patch.1.txt \"Uploaded as text/plain at 2014-01-10.01:58:06 by @larryhastings\")\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/larryhastings'\nclosed_at = \u003cDate 2014-01-12.16:50:39.144\u003e\ncreated_at = \u003cDate 2014-01-08.21:17:00.519\u003e\nlabels = ['type-bug', 'build']\ntitle = 'Argument Clinic generates invalid code for optional parameter'\nupdated_at = \u003cDate 2014-01-12.16:50:39.143\u003e\nuser = 'https://github.com/serhiy-storchaka'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2014-01-12.16:50:39.143\u003e\nactor = 'larry'\nassignee = 'larry'\nclosed = True\nclosed_date = \u003cDate 2014-01-12.16:50:39.144\u003e\ncloser = 'larry'\ncomponents = ['Build']\ncreation = \u003cDate 2014-01-08.21:17:00.519\u003e\ncreator = 'serhiy.storchaka'\ndependencies = []\nfiles = ['33397']\nhgrepos = []\nissue_num = 20196\nkeywords = []\nmessage_count = 6.0\nmessages = ['207700', '207701', '207817', '207963', '207968', '207969']\nnosy_count = 4.0\nnosy_names = ['georg.brandl', 'larry', 'python-dev', 'serhiy.storchaka']\npr_nums = []\npriority = 'normal'\nresolution = 'fixed'\nstage = 'commit review'\nstatus = 'closed'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue20196'\nversions = ['Python 3.4']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2014-01-08T21:17:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/64395/cpython/issues/64395"}