René's URL Explorer Experiment


Title: gh-139871: Optimize bytearray unique bytes iconcat by cmaloney · Pull Request #141862 · python/cpython · GitHub

Open Graph Title: gh-139871: Optimize bytearray unique bytes iconcat by cmaloney · Pull Request #141862 · python/cpython

X Title: gh-139871: Optimize bytearray unique bytes iconcat by cmaloney · Pull Request #141862 · python/cpython

Description: If the bytearray is empty and a uniquely referenced bytes object is being concatenated (ex. one just received from read), just use its storage as the backing for the bytearray rather than copying i...

Open Graph Description: If the bytearray is empty and a uniquely referenced bytes object is being concatenated (ex. one just received from read), just use its storage as the backing for the bytearray rather than copying i...

X Description: If the bytearray is empty and a uniquely referenced bytes object is being concatenated (ex. one just received from read), just use its storage as the backing for the bytearray rather than copying i...

Opengraph URL: https://github.com/python/cpython/pull/141862

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-noncev2:89c3236f-a702-8cac-29ac-d5c0881bbe38
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idD660:311995:3A3C1C6:4C6765F:696BA77E
html-safe-noncec59bf62d944fa55f1d96426f3c769e281e315dab01c716e51863cf69c649044a
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJENjYwOjMxMTk5NTozQTNDMUM2OjRDNjc2NUY6Njk2QkE3N0UiLCJ2aXNpdG9yX2lkIjoiNDk5MjU1MDAzMTk0NDU1ODQ2MiIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac07552a2ea7a9c84722cbfbce63e727fe76ff39d3438919bc4385031f028d88a3
hovercard-subject-tagpull_request:3036841937
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/141862/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/e5b30114be95ab8debacb2e178fed5d20ea5105cdfe42c8cc3fa8284c3f03d01/python/cpython/pull/141862
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/e5b30114be95ab8debacb2e178fed5d20ea5105cdfe42c8cc3fa8284c3f03d01/python/cpython/pull/141862
og:image:altIf the bytearray is empty and a uniquely referenced bytes object is being concatenated (ex. one just received from read), just use its storage as the backing for the bytearray rather than copying i...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamecmaloney
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/141862#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F141862
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%2F141862
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/141862
Reloadhttps://github.com/python/cpython/pull/141862
Reloadhttps://github.com/python/cpython/pull/141862
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/141862
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/141862
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/141862#issue-comment-box
cmaloneyhttps://github.com/cmaloney
python:mainhttps://github.com/python/cpython/tree/main
cmaloney:ba_tb_concathttps://github.com/cmaloney/cpython/tree/ba_tb_concat
gh-139871: Optimize bytearray unique bytes iconcat https://github.com/python/cpython/pull/141862#top
cmaloneyhttps://github.com/cmaloney
python:mainhttps://github.com/python/cpython/tree/main
cmaloney:ba_tb_concathttps://github.com/cmaloney/cpython/tree/ba_tb_concat
Conversation 18 https://github.com/python/cpython/pull/141862
Commits 8 https://github.com/python/cpython/pull/141862/commits
Checks 42 https://github.com/python/cpython/pull/141862/checks
Files changed https://github.com/python/cpython/pull/141862/files
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Nov 22, 2025https://github.com/python/cpython/pull/141862#issue-3655207090
Please reload this pagehttps://github.com/python/cpython/pull/141862
discuss topichttps://discuss.python.org/t/list-bytearray-fill-with-single-value-object/104997
gh-87613https://github.com/python/cpython/issues/87613
@vstinnerhttps://github.com/vstinner
@encukouhttps://github.com/encukou
Add .take_bytes([n]) a zero-copy path from bytearray to bytes #139871https://github.com/python/cpython/issues/139871
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
pythongh-139871https://github.com/python/cpython/issues/139871
: Optimize bytearray unique bytes iconcathttps://github.com/python/cpython/pull/141862/commits/db4c09aa661d03958ce523727e44bad6e2e3d31d
db4c09ahttps://github.com/python/cpython/pull/141862/commits/db4c09aa661d03958ce523727e44bad6e2e3d31d
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
Nov 22, 2025https://github.com/python/cpython/pull/141862#event-21117718572
https://github.com/apps/bedevere-app
bedevere-apphttps://github.com/apps/bedevere-app
Nov 22, 2025 https://github.com/python/cpython/pull/141862#ref-issue-3500184578
Add .take_bytes([n]) a zero-copy path from bytearray to bytes #139871 https://github.com/python/cpython/issues/139871
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
skip news https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22skip%20news%22
Nov 22, 2025https://github.com/python/cpython/pull/141862#event-21117723127
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Nov 23, 2025 https://github.com/python/cpython/pull/141862#ref-pullrequest-3655278634
gh-141863: Use bytearray.take_bytes in asyncio.streams #141864 https://github.com/python/cpython/pull/141864
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Nov 24, 2025 https://github.com/python/cpython/pull/141862#pullrequestreview-3501109865
View reviewed changes https://github.com/python/cpython/pull/141862/files/db4c09aa661d03958ce523727e44bad6e2e3d31d
Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/files/db4c09aa661d03958ce523727e44bad6e2e3d31d#diff-6878f29bbfb711dc7cd2a89b2b2941b1f900b6367d30181a2ff45460b591b04c
Please reload this pagehttps://github.com/python/cpython/pull/141862
Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/files/db4c09aa661d03958ce523727e44bad6e2e3d31d#diff-6878f29bbfb711dc7cd2a89b2b2941b1f900b6367d30181a2ff45460b591b04c
Please reload this pagehttps://github.com/python/cpython/pull/141862
Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/files/db4c09aa661d03958ce523727e44bad6e2e3d31d#diff-6878f29bbfb711dc7cd2a89b2b2941b1f900b6367d30181a2ff45460b591b04c
Please reload this pagehttps://github.com/python/cpython/pull/141862
cmaloneyhttps://github.com/cmaloney
November 24, 2025 11:20https://github.com/python/cpython/pull/141862#commits-pushed-08364c1
https://github.com/cmaloney
https://github.com/vstinner
Apply suggestions from code reviewhttps://github.com/python/cpython/pull/141862/commits/08364c13eaca305ebf65a694f59aad4e0f2ce763
08364c1https://github.com/python/cpython/pull/141862/commits/08364c13eaca305ebf65a694f59aad4e0f2ce763
https://github.com/cmaloney
Switch from comment to assertionhttps://github.com/python/cpython/pull/141862/commits/70c15bfb692e8612bb46948d9dae8e2172e01c79
70c15bfhttps://github.com/python/cpython/pull/141862/commits/70c15bfb692e8612bb46948d9dae8e2172e01c79
https://github.com/vstinner
vstinnerhttps://github.com/vstinner
Nov 25, 2025 https://github.com/python/cpython/pull/141862#pullrequestreview-3504667974
View reviewed changes https://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79
Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79#diff-6878f29bbfb711dc7cd2a89b2b2941b1f900b6367d30181a2ff45460b591b04c
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/encukou
encukouhttps://github.com/encukou
Nov 25, 2025https://github.com/python/cpython/pull/141862#issuecomment-3576274716
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/colesbury
colesburyhttps://github.com/colesbury
Nov 25, 2025 https://github.com/python/cpython/pull/141862#pullrequestreview-3506061045
View reviewed changes https://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79
Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79#diff-6878f29bbfb711dc7cd2a89b2b2941b1f900b6367d30181a2ff45460b591b04c
colesburyhttps://github.com/colesbury
Nov 25, 2025https://github.com/python/cpython/pull/141862#discussion_r2560785737
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Please reload this pagehttps://github.com/python/cpython/pull/141862
vstinnerhttps://github.com/vstinner
Nov 26, 2025https://github.com/python/cpython/pull/141862#discussion_r2564924655
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Nov 29, 2025https://github.com/python/cpython/pull/141862#issuecomment-3590764777
Please reload this pagehttps://github.com/python/cpython/pull/141862
cmaloneyhttps://github.com/cmaloney
December 3, 2025 13:16https://github.com/python/cpython/pull/141862#commits-pushed-614e743
https://github.com/cmaloney
Call take_bytes directlyhttps://github.com/python/cpython/pull/141862/commits/614e743ae74a4e0f56c2e1172e02aaeaa401e2c6
614e743https://github.com/python/cpython/pull/141862/commits/614e743ae74a4e0f56c2e1172e02aaeaa401e2c6
https://github.com/cmaloney
https://github.com/vstinner
Update Objects/bytearrayobject.chttps://github.com/python/cpython/pull/141862/commits/c5e9da6ae9c8ad04cb32fa0c64949c26354dedbb
c5e9da6https://github.com/python/cpython/pull/141862/commits/c5e9da6ae9c8ad04cb32fa0c64949c26354dedbb
https://github.com/cmaloney
Borrow -> Borrowedhttps://github.com/python/cpython/pull/141862/commits/e6fd74159541982b4ba3051283b357367218da1c
e6fd741https://github.com/python/cpython/pull/141862/commits/e6fd74159541982b4ba3051283b357367218da1c
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Dec 3, 2025https://github.com/python/cpython/pull/141862#issuecomment-3609005180
@encukouhttps://github.com/encukou
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/colesbury
colesburyhttps://github.com/colesbury
Dec 3, 2025https://github.com/python/cpython/pull/141862#issuecomment-3609020994
cpython/Objects/object.chttps://github.com/python/cpython/blob/c0c65141b37029bfb364094a6dfb4c75ebf8359e/Objects/object.c#L2758-L2767
c0c6514https://github.com/python/cpython/commit/c0c65141b37029bfb364094a6dfb4c75ebf8359e
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Dec 3, 2025https://github.com/python/cpython/pull/141862#issuecomment-3609187568
GH-142243https://github.com/python/cpython/pull/142243
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Dec 3, 2025https://github.com/python/cpython/pull/141862#issuecomment-3609278341
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
Dec 11, 2025 https://github.com/python/cpython/pull/141862#ref-pullrequest-3692189756
gh-139871: Optimize bytearray construction with encoding #142243 https://github.com/python/cpython/pull/142243
https://github.com/colesbury
colesburyhttps://github.com/colesbury
Dec 11, 2025 https://github.com/python/cpython/pull/141862#ref-issue-3720415827
PyUnstable_Object_IsUniqueReferencedTemporary doesn't handle tagged ints properly #142589 https://github.com/python/cpython/issues/142589
cmaloneyhttps://github.com/cmaloney
December 14, 2025 16:11https://github.com/python/cpython/pull/141862#commits-pushed-fe114fb
https://github.com/cmaloney
Merge branch 'main' into ba_tb_concathttps://github.com/python/cpython/pull/141862/commits/fe114fb0c8e4d28522adc5310816a19d0b5f95c5
fe114fbhttps://github.com/python/cpython/pull/141862/commits/fe114fb0c8e4d28522adc5310816a19d0b5f95c5
https://github.com/cmaloney
Use PyUnstable_Object_IsUniqueReferencedTemporaryhttps://github.com/python/cpython/pull/141862/commits/c689a0af5f336c96d475f0660ed6a6e287b4798b
c689a0ahttps://github.com/python/cpython/pull/141862/commits/c689a0af5f336c96d475f0660ed6a6e287b4798b
https://github.com/cmaloney
cmaloneyhttps://github.com/cmaloney
DO-NOT-MERGE https://github.com/python/cpython/issues?q=state%3Aopen%20label%3ADO-NOT-MERGE
Dec 21, 2025https://github.com/python/cpython/pull/141862#event-21687358644
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%2F141862
https://github.com/vstinner
vstinner https://github.com/vstinner
https://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79
https://github.com/encukou
encukou https://github.com/encukou
https://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79
https://github.com/colesbury
colesbury https://github.com/colesbury
https://github.com/python/cpython/pull/141862/files/70c15bfb692e8612bb46948d9dae8e2172e01c79
awaiting review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22
DO-NOT-MERGE https://github.com/python/cpython/issues?q=state%3Aopen%20label%3ADO-NOT-MERGE
skip news https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22skip%20news%22
Please reload this pagehttps://github.com/python/cpython/pull/141862
https://github.com/cmaloney
https://github.com/encukou
https://github.com/colesbury
https://github.com/vstinner
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.