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Title: `test_pickle` tests failing when invoked directly · Issue #131031 · python/cpython · GitHub

Open Graph Title: `test_pickle` tests failing when invoked directly · Issue #131031 · python/cpython

X Title: `test_pickle` tests failing when invoked directly · Issue #131031 · python/cpython

Description: I ran separate tests for the pickle module on main branch: ./python ./Lib/test/test_pickle.py I got 24 failures Judging by the output, the problem is in the mismatch of error messages: test_nested_lookup_error (__main__.CPicklingErrorTes...

Open Graph Description: I ran separate tests for the pickle module on main branch: ./python ./Lib/test/test_pickle.py I got 24 failures Judging by the output, the problem is in the mismatch of error messages: test_nested_...

X Description: I ran separate tests for the pickle module on main branch: ./python ./Lib/test/test_pickle.py I got 24 failures Judging by the output, the problem is in the mismatch of error messages: test_nested_...

Opengraph URL: https://github.com/python/cpython/issues/131031

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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`test_pickle` tests failing when invoked directly","articleBody":"I ran separate tests for the pickle module on main branch:\n```\n./python ./Lib/test/test_pickle.py\n```\nI got 24 failures\nJudging by the output, the problem is in the mismatch of error messages:\n```\ntest_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) ...\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=0) ... FAIL\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=1) ... FAIL\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=2) ... FAIL\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=3) ... FAIL\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=4) ... FAIL\n  test_nested_lookup_error (__main__.CPicklingErrorTests.test_nested_lookup_error) (proto=5) ... FAIL\n...\ntest_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) ...\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=0) ... FAIL\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=1) ... FAIL\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=2) ... FAIL\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=3) ... FAIL\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=4) ... FAIL\n  test_wrong_object_lookup_error (__main__.CPicklingErrorTests.test_wrong_object_lookup_error) (proto=5) ... FAIL\n...\ntest_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) ...\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=0) ... FAIL\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=1) ... FAIL\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=2) ... FAIL\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=3) ... FAIL\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=4) ... FAIL\n  test_nested_lookup_error (__main__.PyPicklingErrorTests.test_nested_lookup_error) (proto=5) ... FAIL\n...\ntest_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) ...\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=0) ... FAIL\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=1) ... FAIL\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=2) ... FAIL\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=3) ... FAIL\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=4) ... FAIL\n  test_wrong_object_lookup_error (__main__.PyPicklingErrorTests.test_wrong_object_lookup_error) (proto=5) ... FAIL\n```\nExamples of mismatches:\n```\nAssertionError: \"type object 'AbstractPickleTests' has no attribute 'spam'\" != \"module '__main__' has no attribute 'AbstractPickleTests'\"\n- type object 'AbstractPickleTests' has no attribute 'spam'\n+ module '__main__' has no attribute 'AbstractPickleTests'\n...\nAssertionError: \"Can'[53 chars]4b0\u003e: it's not the same object as __main__.AbstractPickleTests\" != \"Can'[53 chars]4b0\u003e: it's not found as __main__.AbstractPickleTests\"\n- Can't pickle \u003ctest.pickletester.REX object at 0x79fcb255a4b0\u003e: it's not the same object as __main__.AbstractPickleTests\n?                                                                         ^^^^^^^^^ ^^^^^\n+ Can't pickle \u003ctest.pickletester.REX object at 0x79fcb255a4b0\u003e: it's not found as __main__.AbstractPickleTests\n?\n```\n\nI'm going to send PR after we decide what the messages should look like\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-133218\n* gh-133356\n* gh-133673\n* gh-133675\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/donbarbos","@type":"Person","name":"donbarbos"},"datePublished":"2025-03-10T07:51:22.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/131031/cpython/issues/131031"}
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og:image:altI ran separate tests for the pickle module on main branch: ./python ./Lib/test/test_pickle.py I got 24 failures Judging by the output, the problem is in the mismatch of error messages: test_nested_...
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test_pickle tests failing when invoked directlyhttps://github.com/python/cpython/issues/131031#top
testsTests in the Lib/test dirhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22tests%22
type-bugAn unexpected behavior, bug, or errorhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-bug%22
https://github.com/donbarbos
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on Mar 10, 2025https://github.com/python/cpython/issues/131031#issue-2906380794
gh-131031: Fix separated running of pickle tests #133218https://github.com/python/cpython/pull/133218
gh-131031: Fix test_pickle when invoked directly #133356https://github.com/python/cpython/pull/133356
[3.14] gh-131031: Fix test_pickle when invoked directly (GH-133356) #133673https://github.com/python/cpython/pull/133673
[3.13] gh-131031: Fix test_pickle when invoked directly (GH-133356) #133675https://github.com/python/cpython/pull/133675
testsTests in the Lib/test dirhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22tests%22
type-bugAn unexpected behavior, bug, or errorhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-bug%22
Pickle and copy issues 🥒https://github.com/orgs/python/projects/9
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