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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"test_importlib: test_multiprocessing_pool_circular_import() fails with \"Too many open files\" error on os.pipe()","articleBody":"BPO | [43592](https://bugs.python.org/issue43592)\n--- | :---\nNosy | @gpshead, @ronaldoussoren, @vstinner, @ned-deily, @ambv, @lielfr, @miss-islington\nPRs | \u003cli\u003epython/cpython#29127\u003c/li\u003e\u003cli\u003epython/cpython#29144\u003c/li\u003e\u003cli\u003epython/cpython#29145\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/gpshead'\nclosed_at = \u003cDate 2021-10-22.04:49:25.641\u003e\ncreated_at = \u003cDate 2021-03-22.10:33:02.909\u003e\nlabels = ['OS-mac', 'type-bug', 'tests', '3.10']\ntitle = 'test_importlib: test_multiprocessing_pool_circular_import() fails with \"Too many open files\" error on os.pipe()'\nupdated_at = \u003cDate 2021-10-22.04:49:25.640\u003e\nuser = 'https://github.com/vstinner'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2021-10-22.04:49:25.640\u003e\nactor = 'gregory.p.smith'\nassignee = 'gregory.p.smith'\nclosed = True\nclosed_date = \u003cDate 2021-10-22.04:49:25.641\u003e\ncloser = 'gregory.p.smith'\ncomponents = ['macOS', 'Tests']\ncreation = \u003cDate 2021-03-22.10:33:02.909\u003e\ncreator = 'vstinner'\ndependencies = []\nfiles = []\nhgrepos = []\nissue_num = 43592\nkeywords = ['patch']\nmessage_count = 13.0\nmessages = ['389301', '389303', '389334', '392245', '400835', '400836', '400837', '400838', '401569', '404665', '404714', '404719', '404720']\nnosy_count = 7.0\nnosy_names = ['gregory.p.smith', 'ronaldoussoren', 'vstinner', 'ned.deily', 'lukasz.langa', 'lielfr', 'miss-islington']\npr_nums = ['29127', '29144', '29145']\npriority = 'normal'\nresolution = 'fixed'\nstage = 'commit review'\nstatus = 'closed'\nsuperseder = None\ntype = 'behavior'\nurl = 'https://bugs.python.org/issue43592'\nversions = ['Python 3.10']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/vstinner","@type":"Person","name":"vstinner"},"datePublished":"2021-03-22T10:33:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":13},"url":"https://github.com/87758/cpython/issues/87758"}