René's URL Explorer Experiment


Title: [3.13] Tee of tee was not producing n independent iterators (gh-123884) by rhettinger · Pull Request #125081 · python/cpython · GitHub

Open Graph Title: [3.13] Tee of tee was not producing n independent iterators (gh-123884) by rhettinger · Pull Request #125081 · python/cpython

X Title: [3.13] Tee of tee was not producing n independent iterators (gh-123884) by rhettinger · Pull Request #125081 · python/cpython

Description: Issue: Incorrect optimization in itertools.tee() #123884 📚 Documentation preview 📚: https://cpython-previews--125081.org.readthedocs.build/

Open Graph Description: Issue: Incorrect optimization in itertools.tee() #123884 📚 Documentation preview 📚: https://cpython-previews--125081.org.readthedocs.build/

X Description: Issue: Incorrect optimization in itertools.tee() #123884 📚 Documentation preview 📚: https://cpython-previews--125081.org.readthedocs.build/

Opengraph URL: https://github.com/python/cpython/pull/125081

X: @github

direct link

Domain: github.com

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-noncev2:5fed1ebb-43d7-29bb-bbcf-1acfea0d3458
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idC60E:1944E2:9EDAE4:D2868E:696B1E9C
html-safe-nonce46785dce834377978dba39ea13bf58576ec4e109eacce2e4699ba54b16948d59
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJDNjBFOjE5NDRFMjo5RURBRTQ6RDI4NjhFOjY5NkIxRTlDIiwidmlzaXRvcl9pZCI6IjQxNjQyMTE4Njc0NTk5ODUwNTIiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmaccb6f3f627328e9930acfeb4efb11ba2d6e83f6718585cf636f329505726d59bf
hovercard-subject-tagpull_request:2112018863
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/125081/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/7ecfbdf2e2ee6497961bfcf098604f3b0f2a37a9c30dceef9017a88f79d31f79/python/cpython/pull/125081
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/7ecfbdf2e2ee6497961bfcf098604f3b0f2a37a9c30dceef9017a88f79d31f79/python/cpython/pull/125081
og:image:altIssue: Incorrect optimization in itertools.tee() #123884 📚 Documentation preview 📚: https://cpython-previews--125081.org.readthedocs.build/
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamerhettinger
hostnamegithub.com
expected-hostnamegithub.com
None5f99f7c1d70f01da5b93e5ca90303359738944d8ab470e396496262c66e60b8d
turbo-cache-controlno-preview
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
release82560a55c6b2054555076f46e683151ee28a19bc
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/125081#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F125081
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub SparkBuild and deploy intelligent appshttps://github.com/features/spark
GitHub ModelsManage and compare promptshttps://github.com/features/models
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
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
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
GitHub SponsorsFund open source developershttps://github.com/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/accelerator
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://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/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F125081
Sign up https://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/125081
Reloadhttps://github.com/python/cpython/pull/125081
Reloadhttps://github.com/python/cpython/pull/125081
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/125081
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 33.9k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 71.1k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.1k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects 31 https://github.com/python/cpython/projects
Security Uh oh! There was an error while loading. Please reload this page. https://github.com/python/cpython/security
Please reload this pagehttps://github.com/python/cpython/pull/125081
Insights https://github.com/python/cpython/pulse
Code https://github.com/python/cpython
Issues https://github.com/python/cpython/issues
Pull requests https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Sign up for GitHub https://github.com/signup?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://github.com/login?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
Jump to bottomhttps://github.com/python/cpython/pull/125081#issue-comment-box
rhettingerhttps://github.com/rhettinger
python:3.13https://github.com/python/cpython/tree/3.13
rhettinger:backport909c6f7https://github.com/rhettinger/cpython/tree/backport909c6f7
[3.13] Tee of tee was not producing n independent iterators (gh-123884) https://github.com/python/cpython/pull/125081#top
rhettingerhttps://github.com/rhettinger
python:3.13https://github.com/python/cpython/tree/3.13
rhettinger:backport909c6f7https://github.com/rhettinger/cpython/tree/backport909c6f7
Conversation 6 https://github.com/python/cpython/pull/125081
Commits 3 https://github.com/python/cpython/pull/125081/commits
Checks 1 https://github.com/python/cpython/pull/125081/checks
Files changed https://github.com/python/cpython/pull/125081/files
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
Oct 8, 2024https://github.com/python/cpython/pull/125081#issue-2571863967
Please reload this pagehttps://github.com/python/cpython/pull/125081
Incorrect optimization in itertools.tee() #123884https://github.com/python/cpython/issues/123884
https://cpython-previews--125081.org.readthedocs.build/https://cpython-previews--125081.org.readthedocs.build/
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.com/rhettinger
pythongh-123884https://github.com/python/cpython/issues/123884
Tee of tee was not producing n independent iterators (https://github.com/python/cpython/pull/125081/commits/3509123d86a8b2e0e10268185be35c514b3b751f
p…https://github.com/python/cpython/pull/124490
3509123https://github.com/python/cpython/pull/125081/commits/3509123d86a8b2e0e10268185be35c514b3b751f
…ythongh-124490https://github.com/python/cpython/pull/124490
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
type-bug https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Atype-bug
3.13 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A3.13
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14548949280
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
awaiting core review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20core%20review%22
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14548949863
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
Oct 8, 2024 https://github.com/python/cpython/pull/125081#ref-issue-2514961180
Incorrect optimization in itertools.tee() #123884 https://github.com/python/cpython/issues/123884
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
needs backport to 3.12 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.12%22
awaiting core review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20core%20review%22
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14548956228
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
Oct 8, 2024https://github.com/python/cpython/pull/125081#issuecomment-2398502513
@serhiy-storchakahttps://github.com/serhiy-storchaka
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.com/rruuaanng
rruuaannghttps://github.com/rruuaanng
Oct 8, 2024 https://github.com/python/cpython/pull/125081#pullrequestreview-2353288244
View reviewed changes https://github.com/python/cpython/pull/125081/files/3509123d86a8b2e0e10268185be35c514b3b751f
Misc/NEWS.d/next/Library/2024-09-24-22-38-51.gh-issue-123884.iEPTK4.rsthttps://github.com/python/cpython/pull/125081/files/3509123d86a8b2e0e10268185be35c514b3b751f#diff-b23a2fd0304086487dfc3dfe03300e598bf6f53b22690a500c1a6b23e17c2393
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.com/serhiy-storchaka
serhiy-storchakahttps://github.com/serhiy-storchaka
Yhg1shttps://github.com/Yhg1s
October 8, 2024 06:17https://github.com/python/cpython/pull/125081#event-14550777094
https://github.com/serhiy-storchaka
serhiy-storchakahttps://github.com/serhiy-storchaka
Oct 8, 2024https://github.com/python/cpython/pull/125081#issuecomment-2398946102
Please reload this pagehttps://github.com/python/cpython/pull/125081
rhettingerhttps://github.com/rhettinger
October 8, 2024 02:31https://github.com/python/cpython/pull/125081#commits-pushed-f8fa02f
https://github.com/rhettinger
Keep stable API reference to __copy__https://github.com/python/cpython/pull/125081/commits/f8fa02f6b42be0135a1099109444c64d9d42f5ac
f8fa02fhttps://github.com/python/cpython/pull/125081/commits/f8fa02f6b42be0135a1099109444c64d9d42f5ac
https://github.com/rhettinger
Merge branch '3.13' into backport909c6f7https://github.com/python/cpython/pull/125081/commits/c65671c0295c239871fa419cc538e175f15c0d38
c65671chttps://github.com/python/cpython/pull/125081/commits/c65671c0295c239871fa419cc538e175f15c0d38
https://github.com/serhiy-storchaka
serhiy-storchakahttps://github.com/serhiy-storchaka
Oct 8, 2024 https://github.com/python/cpython/pull/125081#pullrequestreview-2353766130
View reviewed changes https://github.com/python/cpython/pull/125081/files/c65671c0295c239871fa419cc538e175f15c0d38
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
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14552410283
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
7bc99ddhttps://github.com/python/cpython/commit/7bc99dd49ed4cebe4795cc7914c4231209b2aa4b
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14561709001
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Oct 8, 2024https://github.com/python/cpython/pull/125081#issuecomment-2400623145
@rhettingerhttps://github.com/rhettinger
Please reload this pagehttps://github.com/python/cpython/pull/125081
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
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14561709517
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
Oct 8, 2024https://github.com/python/cpython/pull/125081#issuecomment-2400623232
@rhettingerhttps://github.com/rhettinger
cherry_pickerhttps://pypi.org/project/cherry-picker/
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.com/apps/miss-islington-app
miss-islington-apphttps://github.com/apps/miss-islington-app
rhettingerhttps://github.com/rhettinger
Oct 8, 2024https://github.com/python/cpython/pull/125081#event-14561710133
https://github.com/rhettinger
rhettingerhttps://github.com/rhettinger
October 8, 2024 19:11https://github.com/python/cpython/pull/125081#event-14561711295
rhettingerhttps://github.com/rhettinger
Oct 8, 2024 https://github.com/python/cpython/pull/125081#ref-commit-ebbe229
https://github.com/rhettinger
[3.13] Tee of tee was not producing n independent iterators (https://github.com/rhettinger/cpython/commit/ebbe22930ed32502d557e52f5cb39cc1a8b7cbe9
pythongh…https://github.com/python/cpython/issues/123884
ebbe229https://github.com/rhettinger/cpython/commit/ebbe22930ed32502d557e52f5cb39cc1a8b7cbe9
…-123884https://github.com/python/cpython/issues/123884
pythongh-125081https://github.com/python/cpython/pull/125081
https://github.com/tacaswell
tacaswellhttps://github.com/tacaswell
Oct 29, 2024 https://github.com/python/cpython/pull/125081#ref-issue-2621446223
experimental jit causes infinite loops on 3.13 branch #126127 https://github.com/python/cpython/issues/126127
https://github.com/hugovk
hugovkhttps://github.com/hugovk
needs backport to 3.12 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22needs%20backport%20to%203.12%22
Apr 9, 2025https://github.com/python/cpython/pull/125081#event-17187821803
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%2F125081
https://github.com/serhiy-storchaka
serhiy-storchaka https://github.com/serhiy-storchaka
https://github.com/python/cpython/pull/125081/files/c65671c0295c239871fa419cc538e175f15c0d38
https://github.com/Yhg1s
Yhg1s https://github.com/Yhg1s
https://github.com/rruuaanng
rruuaanng https://github.com/rruuaanng
https://github.com/python/cpython/pull/125081/files/3509123d86a8b2e0e10268185be35c514b3b751f
https://github.com/rhettinger
rhettinger https://github.com/rhettinger
3.13 https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A3.13
type-bug https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Atype-bug
Please reload this pagehttps://github.com/python/cpython/pull/125081
https://github.com/rhettinger
https://github.com/serhiy-storchaka
https://github.com/rruuaanng
https://github.com/hugovk
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.