René's URL Explorer Experiment


Title: [3.14] gh-143650: Fix importlib race condition on import failure (GH-143651) by miss-islington · Pull Request #144662 · python/cpython · GitHub

Open Graph Title: [3.14] gh-143650: Fix importlib race condition on import failure (GH-143651) by miss-islington · Pull Request #144662 · python/cpython

X Title: [3.14] gh-143650: Fix importlib race condition on import failure (GH-143651) by miss-islington · Pull Request #144662 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: Fix a race condition where a thread could receive a partially-initialized module when another thread's import fails. The race occurs when: Thread 1 starts importing, adds module to sys.modules...

X Description: Fix a race condition where a thread could receive a partially-initialized module when another thread's import fails. The race occurs when: Thread 1 starts importing, adds module to sys.mod...

Mail addresses
68491+gpshead@users.noreply.github.com
noreply@anthropic.com

Opengraph URL: https://github.com/python/cpython/pull/144662

X: @github

direct link

Domain: github.com

react-profiling0
react-import-mapreact,react-dom,react-dom/client,react-dom/profiling,react-is,react-reconciler,react/compiler-runtime,react/jsx-dev-runtime,react/jsx-runtime,scheduler@d5750093facf
route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:43d69ffb-aff9-4632-c57f-6ae32d1640b6
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idA67A:2973C7:549B8D:6DCAC2:6AED272E
html-safe-nonce76b78d6f605a63e68f4404d027ab3a187c918187bd94c8b17a6cb670bdca45a1
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBNjdBOjI5NzNDNzo1NDlCOEQ6NkRDQUMyOjZBRUQyNzJFIiwidmlzaXRvcl9pZCI6Ijc1NDM3NjU2MDUxMzU3NTUwNTQiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac81dc5d63bba303e2e26ae59e699f25ea348cffb96555c97d5d2c52d430b1dfd4
hovercard-subject-tagpull_request:3267153162
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/python/cpython/144662/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/b2c065399adb458a70277e77000518e1bf11ec801d824466df195ac8b90c2300/python/cpython/pull/144662
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/b2c065399adb458a70277e77000518e1bf11ec801d824466df195ac8b90c2300/python/cpython/pull/144662
og:image:altFix a race condition where a thread could receive a partially-initialized module when another thread's import fails. The race occurs when: Thread 1 starts importing, adds module to sys.modules...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamemiss-islington
hostnamegithub.com
expected-hostnamegithub.com
None9d95365dda0576efe9b71f45807595e396bd0ca9286fba5367a05048e6ddf8f2
turbo-cache-controlno-cache
go-importgithub.com/python/cpython git https://github.com/python/cpython.git
octolytics-dimension-user_id1525981
octolytics-dimension-user_loginpython
octolytics-dimension-repository_id81598961
octolytics-dimension-repository_nwopython/cpython
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id81598961
octolytics-dimension-repository_network_root_nwopython/cpython
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release98b41fa4b5635ceb45a4c54320fced73817ff290
ui-targetcanary-2
theme-color#1e2327
color-schemelight dark
react-app-namepull-requests

Links:

Skip to contenthttps://github.com/python/cpython/pull/144662#start-of-content
https://github.com/
Sign inhttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F144662
GitHubRepository hosting, code review, and collaborationhttps://github.com/platform
CopilotAI coding agent for tasks, projects, and automated workhttps://github.com/features/copilot
ActionsCI/CD and automationhttps://github.com/features/actions
Code QualityQuality analysis, fixes, and enforcementhttps://github.com/features/code-quality
CodespacesCloud development environmentshttps://github.com/features/codespaces
Code SecurityVulnerability detection and remediationhttps://github.com/security/advanced-security/code-security
Secret ProtectionSecret scanning and leak preventionhttps://github.com/security/advanced-security/secret-protection
All Featureshttps://github.com/features
Documentationhttps://docs.github.com/en
Traininghttps://learn.github.com/skills
Certificationshttps://learn.github.com/credentials
Build with Copilothttps://github.com/features/ai
Customize Copilothttps://docs.github.com/en/copilot/how-tos/copilot-on-github/customize-copilot/customize-copilot-overview
Integrationshttps://github.com/marketplace
Trending reposhttps://github.com/trending
GitHub Sponsorshttps://github.com/open-source/sponsors
Developer articleshttps://github.com/resources/articles
ChangelogYour source for the latest features, improvements, and fixes across GitHub products, all in one place.https://github.blog/changelog/
Enterpriseshttps://github.com/enterprise
Teamhttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
See all industrieshttps://github.com/solutions/industry
Why GitHubhttps://github.com/why-github
Customer Storieshttps://github.com/customer-stories
Business insightshttps://github.com/solutions/executive-insights
Trust Centerhttps://github.com/trust-center
GitHub Advanced SecurityEnterprise-grade code securityhttps://github.com/security/advanced-security
Copilot for businessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/enterprise/premium-support
Documentationhttps://docs.github.com/en
Resource centerhttps://github.com/resources
Bloghttps://github.blog/
Events & webinarshttps://github.com/resources/events
Community Forumhttps://github.com/orgs/community/discussions
Customer Storieshttps://github.com/customer-stories
Integrationshttps://github.com/marketplace
Customer supporthttps://help.github.com/
Traininghttps://learn.github.com/skills
GitHub Statushttps://www.githubstatus.com/
Abouthttps://github.com/about
Partnershttps://github.com/partners
Changeloghttps://github.blog/changelog/
GitHub UniverseThe event for developers, by developers — talks, workshops, and what’s next for GitHub.https://githubuniverse.com/
Pricinghttps://github.com/pricing
Sign inhttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F144662
Sign uphttps://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/144662
Reloadhttps://github.com/python/cpython/pull/144662
Reloadhttps://github.com/python/cpython/pull/144662
pythonhttps://github.com/python
cpythonhttps://github.com/python/cpython
Codehttps://github.com/python/cpython
Issues5k+ (5k+)https://github.com/python/cpython/issues
Pull requests2.3k (2.3k)https://github.com/python/cpython/pulls
Actionshttps://github.com/python/cpython/actions
Projectshttps://github.com/python/cpython/projects
Security and qualityhttps://github.com/python/cpython/security
Insightshttps://github.com/python/cpython/pulse
https://github.com/python/cpython
gpsheadhttps://github.com/gpshead
python:3.14https://github.com/python/cpython/tree/3.14
miss-islington:backport-ac8b5b6-3.14https://github.com/miss-islington/cpython/tree/backport-ac8b5b6-3.14
Conversationhttps://github.com/python/cpython/pull/144662
Commits1 (1)https://github.com/python/cpython/pull/144662/commits
Checkshttps://github.com/python/cpython/pull/144662/checks
Files changedhttps://github.com/python/cpython/pull/144662/files
[3.14] gh-143650: Fix importlib race condition on import failure (GH-143651)https://github.com/python/cpython/pull/144662#top
gpsheadhttps://github.com/gpshead
python:3.14https://github.com/python/cpython/tree/3.14
miss-islington:backport-ac8b5b6-3.14https://github.com/miss-islington/cpython/tree/backport-ac8b5b6-3.14
https://github.com/miss-islington
miss-islingtonhttps://github.com/miss-islington
Feb 10, 2026https://github.com/python/cpython/pull/144662#issue-3921376358
Please reload this pagehttps://github.com/python/cpython/pull/144662
ac8b5b6https://github.com/python/cpython/commit/ac8b5b6890006ee7254ea878866cb486ff835ecb
importlib race condition allows stale module ref to escape on failure #143650https://github.com/python/cpython/issues/143650
Please reload this pagehttps://github.com/python/cpython/pull/144662
https://github.com/gpshead
https://github.com/claude
https://github.com/miss-islington
pythongh-143650https://github.com/python/cpython/issues/143650
: Fix importlib race condition on import failure (https://github.com/python/cpython/pull/144662/commits/6cc1f0cb179820a3d9bc5f0ad5e9e17c6e5d9cfc
pyth…https://github.com/python/cpython/pull/143651
6cc1f0chttps://github.com/python/cpython/pull/144662/commits/6cc1f0cb179820a3d9bc5f0ad5e9e17c6e5d9cfc
…onGH-143651https://github.com/python/cpython/pull/143651
ac8b5b6https://github.com/miss-islington/cpython/commit/ac8b5b6890006ee7254ea878866cb486ff835ecb
https://github.com/miss-islington
miss-islingtonhttps://github.com/miss-islington
brettcannonhttps://github.com/brettcannon
ericsnowcurrentlyhttps://github.com/ericsnowcurrently
kumaraditya303https://github.com/kumaraditya303
ncoghlanhttps://github.com/ncoghlan
warsawhttps://github.com/warsaw
code ownershttps://github.com/python/cpython/blob/13b3dd06229383d30d634ed01ba8e6b3e6640f90/.github/CODEOWNERS#L143
February 10, 2026 13:08https://github.com/python/cpython/pull/144662#event-22673747439
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Feb 10, 2026https://github.com/python/cpython/pull/144662#event-22673748925
importlib race condition allows stale module ref to escape on failure #143650 https://github.com/python/cpython/issues/143650
gh-143650: Fix importlib race condition on import failure #143651 https://github.com/python/cpython/pull/143651
https://github.com/brettcannon
brettcannonhttps://github.com/brettcannon
gpsheadhttps://github.com/gpshead
brettcannonhttps://github.com/brettcannon
February 11, 2026 00:12https://github.com/python/cpython/pull/144662#event-22689811466
https://github.com/gpshead
gpsheadhttps://github.com/gpshead
Feb 11, 2026 https://github.com/python/cpython/pull/144662#pullrequestreview-3782962938
View reviewed changes https://github.com/python/cpython/pull/144662/files/6cc1f0cb179820a3d9bc5f0ad5e9e17c6e5d9cfc
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
Feb 11, 2026https://github.com/python/cpython/pull/144662#event-22694299840
https://github.com/gpshead
gpsheadhttps://github.com/gpshead
February 11, 2026 06:06https://github.com/python/cpython/pull/144662#event-22694304360
https://github.com/gpshead
gpsheadhttps://github.com/gpshead
7d07470https://github.com/python/cpython/commit/7d074702ebf2f456baee9696e73e176bf7fa5146
Feb 11, 2026https://github.com/python/cpython/pull/144662#event-22694304659
Please reload this pagehttps://github.com/python/cpython/pull/144662
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
Feb 11, 2026https://github.com/python/cpython/pull/144662#event-22694305383
https://github.com/miss-islington
miss-islingtonhttps://github.com/miss-islington
February 11, 2026 06:06https://github.com/python/cpython/pull/144662#event-22694305590
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
Sign up for freehttps://github.com/join?source=comment-repo
Sign in to commenthttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F144662
https://github.com/gpshead
gpshead https://github.com/gpshead
https://github.com/python/cpython/pull/144662/files/6cc1f0cb179820a3d9bc5f0ad5e9e17c6e5d9cfc
https://github.com/kumaraditya303
kumaraditya303 https://github.com/kumaraditya303
https://github.com/ericsnowcurrently
ericsnowcurrently https://github.com/ericsnowcurrently
https://github.com/ncoghlan
ncoghlan https://github.com/ncoghlan
https://github.com/warsaw
warsaw https://github.com/warsaw
Please reload this pagehttps://github.com/python/cpython/pull/144662
Please reload this pagehttps://github.com/python/cpython/pull/144662
https://github.com/miss-islington
https://github.com/gpshead
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width


URLs of crawlers that visited me.