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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Multiprocessing Test Issue - Dangling Threads","articleBody":"## Summary\nWhen running the `test_multiprocessing_*` suite, there are differences in test output that, while not impeding the tests, are output while running the suite, but are in CPython. \n\n## Details\nAfter some tests are run, this warning pops up:\n`Warning -- Dangling threads: {\u003cDummyProcess(Thread-181 (worker), stopped daemon 201)\u003e, \u003cDummyProcess(Thread-182 (worker), stopped daemon 202)\u003e, \u003cDummyProcess(Thread-183 (worker), stopped daemon 203)\u003e, \u003cThread(Thread-184 (_handle_workers), stopped daemon 204)\u003e, \u003cThread(Thread-185 (_handle_tasks), stopped daemon 205)\u003e, \u003cThread(Thread-186 (_handle_results), stopped daemon 206)\u003e}`\n\nThese tests include but are not limited to:\n* `test.test_multiprocessing_fork.test_processes.WithProcessesTestValue.test_value`\n* `test.test_multiprocessing_fork.test_processes.WithProcessesTestPool.test_wrapped_exception`\n\n","author":{"url":"https://github.com/terryluan12","@type":"Person","name":"terryluan12"},"datePublished":"2026-01-10T16:12:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/6699/RustPython/issues/6699"}