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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"traceback.clear_frames manages to deadlock a background task","articleBody":"BPO | [35751](https://bugs.python.org/issue35751)\n--- | :---\nNosy | @asvetlov, @1st1, @tvoinarovskyi\nFiles | \u003cli\u003e[test_async_deadlock.py](https://bugs.python.org/file48059/test_async_deadlock.py \"Uploaded as text/plain at 2019-01-16.10:34:07 by @tvoinarovskyi\"): Script to reproduce issue\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 2019-01-16.10:34:07.787\u003e\nlabels = ['type-bug', '3.7', 'expert-asyncio']\ntitle = 'traceback.clear_frames manages to deadlock a background task'\nupdated_at = \u003cDate 2019-01-17.00:50:59.457\u003e\nuser = 'https://github.com/tvoinarovskyi'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2019-01-17.00:50:59.457\u003e\nactor = 'tvoinarovskyi'\nassignee = 'none'\nclosed = False\nclosed_date = None\ncloser = None\ncomponents = ['asyncio']\ncreation = \u003cDate 2019-01-16.10:34:07.787\u003e\ncreator = 'tvoinarovskyi'\ndependencies = []\nfiles = ['48059']\nhgrepos = []\nissue_num = 35751\nkeywords = []\nmessage_count = 4.0\nmessages = ['333759', '333770', '333775', '333808']\nnosy_count = 3.0\nnosy_names = ['asvetlov', 'yselivanov', 'tvoinarovskyi']\npr_nums = []\npriority = 'normal'\nresolution = None\nstage = None\nstatus = 'open'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue35751'\nversions = ['Python 3.6', 'Python 3.7']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-111792\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/tvoinarovskyi","@type":"Person","name":"tvoinarovskyi"},"datePublished":"2019-01-16T10:34:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":13},"url":"https://github.com/79932/cpython/issues/79932"}