René's URL Explorer Experiment


Title: Fix mutable default arguments in backend_svg.py by llukito · Pull Request #31141 · matplotlib/matplotlib · GitHub

Open Graph Title: Fix mutable default arguments in backend_svg.py by llukito · Pull Request #31141 · matplotlib/matplotlib

X Title: Fix mutable default arguments in backend_svg.py by llukito · Pull Request #31141 · matplotlib/matplotlib

Description: matplotlib: plotting with Python. Contribute to matplotlib/matplotlib development by creating an account on GitHub.

Open Graph Description: Description This PR fixes a mutable default argument issue in lib/matplotlib/backends/backend_svg.py. In the XMLWriter class, the start and element methods were using a mutable dictionary (attrib={...

X Description: Description This PR fixes a mutable default argument issue in lib/matplotlib/backends/backend_svg.py. In the XMLWriter class, the start and element methods were using a mutable dictionary (attrib={...

Opengraph URL: https://github.com/matplotlib/matplotlib/pull/31141

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:fd357088-08ce-ae69-161c-38d3115ca562
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idC8FA:9EFA3:2838B1:3617A0:6A518A4A
html-safe-noncef744d923df9f045165dbaaf40943be9174710d952f1a7da4f7ecaa8d97c8250f
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJDOEZBOjlFRkEzOjI4MzhCMTozNjE3QTA6NkE1MThBNEEiLCJ2aXNpdG9yX2lkIjoiODQ0OTYyMTI2MzUxMzY1MTc4NiIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac33d122ac874a42f754ad0b3faf7572c2a2eac7283e32476e9a088479776a2f00
hovercard-subject-tagpull_request:3276566842
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/matplotlib/matplotlib/31141/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/76efeedcc15762a16293c80aa1a5e66a6be9f3539645fb5e6b3d2f78ff35894b/matplotlib/matplotlib/pull/31141
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/76efeedcc15762a16293c80aa1a5e66a6be9f3539645fb5e6b3d2f78ff35894b/matplotlib/matplotlib/pull/31141
og:image:altDescription This PR fixes a mutable default argument issue in lib/matplotlib/backends/backend_svg.py. In the XMLWriter class, the start and element methods were using a mutable dictionary (attrib={...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamellukito
hostnamegithub.com
expected-hostnamegithub.com
Noneb9a586c06a05a7a86fc7e3f4dbd03e42f6869085879aa184aa6369456dbd50fb
turbo-cache-controlno-cache
go-importgithub.com/matplotlib/matplotlib git https://github.com/matplotlib/matplotlib.git
octolytics-dimension-user_id215947
octolytics-dimension-user_loginmatplotlib
octolytics-dimension-repository_id1385122
octolytics-dimension-repository_nwomatplotlib/matplotlib
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id1385122
octolytics-dimension-repository_network_root_nwomatplotlib/matplotlib
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
release7aed05249554b889eb33d002851a973eebcc7e91
ui-targetcanary-1
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/matplotlib/matplotlib/pull/31141/#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fmatplotlib%2Fmatplotlib%2Fpull%2F31141%2F
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
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
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
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/enterprise/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%2Fmatplotlib%2Fmatplotlib%2Fpull%2F31141%2F
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=matplotlib%2Fmatplotlib
Reloadhttps://github.com/matplotlib/matplotlib/pull/31141/
Reloadhttps://github.com/matplotlib/matplotlib/pull/31141/
Reloadhttps://github.com/matplotlib/matplotlib/pull/31141/
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
matplotlib https://github.com/matplotlib
matplotlibhttps://github.com/matplotlib/matplotlib
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
Notifications https://github.com/login?return_to=%2Fmatplotlib%2Fmatplotlib
Fork 8.4k https://github.com/login?return_to=%2Fmatplotlib%2Fmatplotlib
Star 23k https://github.com/login?return_to=%2Fmatplotlib%2Fmatplotlib
Code https://github.com/matplotlib/matplotlib
Issues 1.1k https://github.com/matplotlib/matplotlib/issues
Pull requests 409 https://github.com/matplotlib/matplotlib/pulls
Actions https://github.com/matplotlib/matplotlib/actions
Projects https://github.com/matplotlib/matplotlib/projects
Wiki https://github.com/matplotlib/matplotlib/wiki
Security and quality 0 https://github.com/matplotlib/matplotlib/security
Insights https://github.com/matplotlib/matplotlib/pulse
Code https://github.com/matplotlib/matplotlib
Issues https://github.com/matplotlib/matplotlib/issues
Pull requests https://github.com/matplotlib/matplotlib/pulls
Actions https://github.com/matplotlib/matplotlib/actions
Projects https://github.com/matplotlib/matplotlib/projects
Wiki https://github.com/matplotlib/matplotlib/wiki
Security and quality https://github.com/matplotlib/matplotlib/security
Insights https://github.com/matplotlib/matplotlib/pulse
anntzerhttps://github.com/anntzer
matplotlib:mainhttps://github.com/matplotlib/matplotlib/tree/main
llukito:fix-svg-mutable-defaultshttps://github.com/llukito/matplotlib/tree/fix-svg-mutable-defaults
Conversationhttps://github.com/matplotlib/matplotlib/pull/31141
Commits1 (1)https://github.com/matplotlib/matplotlib/pull/31141/commits
Checkshttps://github.com/matplotlib/matplotlib/pull/31141/checks
Files changedhttps://github.com/matplotlib/matplotlib/pull/31141/files
Fix mutable default arguments in backend_svg.pyhttps://github.com/matplotlib/matplotlib/pull/31141/#top
anntzerhttps://github.com/anntzer
matplotlib:mainhttps://github.com/matplotlib/matplotlib/tree/main
llukito:fix-svg-mutable-defaultshttps://github.com/llukito/matplotlib/tree/fix-svg-mutable-defaults
https://github.com/llukito
llukitohttps://github.com/llukito
Feb 12, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issue-3932226082
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/apps/github-actions
github-actionshttps://github.com/apps/github-actions
Feb 12, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issuecomment-3891343600
on gitterhttps://gitter.im/matplotlib/matplotlib
the developer guidehttps://matplotlib.org/devdocs/devel/index.html
Code of Conducthttps://github.com/matplotlib/matplotlib/blob/main/CODE_OF_CONDUCT.md
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/apps/github-actions
github-actionshttps://github.com/apps/github-actions
backend: svg https://github.com/matplotlib/matplotlib/issues?q=state%3Aopen%20label%3A%22backend%3A%20svg%22
first-contribution https://github.com/matplotlib/matplotlib/issues?q=state%3Aopen%20label%3Afirst-contribution
Feb 12, 2026https://github.com/matplotlib/matplotlib/pull/31141/#event-22737506249
https://github.com/llukito
llukitohttps://github.com/llukito
Feb 12, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issuecomment-3891647660
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/anntzer
anntzerhttps://github.com/anntzer
Feb 12, 2026 https://github.com/matplotlib/matplotlib/pull/31141/#ref-pullrequest-3934121345
Deprecate public access to XMLWriter; simplify some attribute settings #31143 https://github.com/matplotlib/matplotlib/pull/31143
https://github.com/tacaswell
tacaswellhttps://github.com/tacaswell
Feb 13, 2026 https://github.com/matplotlib/matplotlib/pull/31141/#pullrequestreview-3795112634
View reviewed changes https://github.com/matplotlib/matplotlib/pull/31141/files/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
https://github.com/llukito
llukitohttps://github.com/llukito
Feb 13, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issuecomment-3895208709
@tacaswellhttps://github.com/tacaswell
@anntzerhttps://github.com/anntzer
#31143https://github.com/matplotlib/matplotlib/pull/31143
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/anntzer
anntzerhttps://github.com/anntzer
Feb 13, 2026 https://github.com/matplotlib/matplotlib/pull/31141/#pullrequestreview-3795535386
View reviewed changes https://github.com/matplotlib/matplotlib/pull/31141/files/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
anntzerhttps://github.com/anntzer
https://github.com/matplotlib/matplotlib/pull/31141/#pullrequestreview-3795535386
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/llukito
Fix mutable default arguments in XMLWriterhttps://github.com/matplotlib/matplotlib/pull/31141/commits/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
fded0d5https://github.com/matplotlib/matplotlib/pull/31141/commits/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
https://github.com/llukito
llukitohttps://github.com/llukito
force-pushedhttps://github.com/matplotlib/matplotlib/compare/fefab51ac431178338d957eca81fcf5d629da193..fded0d55b5fb3c07adbb8d363951c083fb3e6db2
fefab51https://github.com/matplotlib/matplotlib/commit/fefab51ac431178338d957eca81fcf5d629da193
fded0d5https://github.com/matplotlib/matplotlib/commit/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
Compare https://github.com/matplotlib/matplotlib/compare/fefab51ac431178338d957eca81fcf5d629da193..fded0d55b5fb3c07adbb8d363951c083fb3e6db2
February 13, 2026 07:53https://github.com/matplotlib/matplotlib/pull/31141/#event-22758668390
https://github.com/llukito
llukitohttps://github.com/llukito
Feb 13, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issuecomment-3895456462
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/anntzer
anntzerhttps://github.com/anntzer
Feb 13, 2026https://github.com/matplotlib/matplotlib/pull/31141/#issuecomment-3896386677
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/anntzer
anntzerhttps://github.com/anntzer
c4b9963https://github.com/matplotlib/matplotlib/commit/c4b9963f38a8127256c9cbb6fe5f0b5c17356560
Feb 13, 2026https://github.com/matplotlib/matplotlib/pull/31141#event-22762550311
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/QuLogic
QuLogichttps://github.com/QuLogic
v3.11.0https://github.com/matplotlib/matplotlib/milestone/96
Feb 13, 2026https://github.com/matplotlib/matplotlib/pull/31141/#event-22771322932
https://github.co/hiddenchars
https://github.com/matplotlib/matplotlib/pull/31141/{{ 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%2Fmatplotlib%2Fmatplotlib%2Fpull%2F31141%2F
https://github.com/tacaswell
tacaswell https://github.com/tacaswell
https://github.com/matplotlib/matplotlib/pull/31141/files/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
https://github.com/anntzer
anntzer https://github.com/anntzer
https://github.com/matplotlib/matplotlib/pull/31141/files/fded0d55b5fb3c07adbb8d363951c083fb3e6db2
backend: svg https://github.com/matplotlib/matplotlib/issues?q=state%3Aopen%20label%3A%22backend%3A%20svg%22
first-contribution https://github.com/matplotlib/matplotlib/issues?q=state%3Aopen%20label%3Afirst-contribution
v3.11.0 https://github.com/matplotlib/matplotlib/milestone/96
Please reload this pagehttps://github.com/matplotlib/matplotlib/pull/31141/
https://github.com/llukito
https://github.com/anntzer
https://github.com/tacaswell
https://github.com/QuLogic
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.