Skip to content

Navigation Menu

Appearance settings

Explore
By company size
By use case
By industry
View all solutions
Topics
- AI
- DevOps
- Security
- Software Development
- View all
Explore
- GitHub Sponsors
  Fund open source developers
- The ReadME Project
  GitHub community articles
Repositories
- Enterprise platform
  AI-powered developer platform
Available add-ons
Pricing

Search code, repositories, users, issues, pull requests...

Search

Clear

Search syntax tips

Provide feedback

We read every piece of feedback, and take your input very seriously.

Include my email address so I can be contacted

Saved searches

Use saved searches to filter your results more quickly

Name

Query

To see all available qualifiers, see our documentation.

Appearance settings

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session.

Dismiss alert

pandas-dev / pandas Public

Notifications You must be signed in to change notification settings
Fork 18.7k
Star 46k

Code
Issues 3.7k
Pull requests 86
Actions
Projects
Security
Insights

Additional navigation options

Code
Issues
Pull requests
Actions
Projects
Security
Insights

PERF: Improve performance for df.duplicated with one column subset#45534

Merged

jreback merged 3 commits intopandas-dev:mainpandas-dev/pandas:mainfrom

phofl:45236phofl/pandas:45236Copy head branch name to clipboard

Jan 21, 2022

Conversation Commits3 (3)Checks Files changed

Merged

PERF: Improve performance for df.duplicated with one column subset#45534
jreback merged 3 commits intopandas-dev:mainfrom
phofl:45236

Commits

Commits on Jan 21, 2022

PERF: Improve performance for df.duplicated with one column subset
phofl
committed
Set Name to None
phofl
committed
Add comment
phofl
committed

Footer

© 2025 GitHub, Inc.

Footer navigation

Terms
Privacy
Security
Status
Docs
Contact

You can’t perform that action at this time.