Uh oh!
There was an error while loading.Please reload this page.
- Notifications
You must be signed in to change notification settings - Fork18.5k
Fix #61072: inconsistent fullmatch results with regex alternation#61343
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to ourterms of service andprivacy statement. We’ll occasionally send you account related emails.
Already on GitHub?Sign in to your account
Open
Pedro-Santos04 wants to merge7 commits intopandas-dev:mainChoose a base branch
base:main
Could not load branches
Branch not found:{{ refName }}
Loading
Could not load tags
Nothing to show
Loading
Are you sure you want to change the base?
Some commits from the old base branch may be removed from the timeline, and old review comments may become outdated.
Uh oh!
There was an error while loading.Please reload this page.
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.Learn more about bidirectional Unicode characters
…nationin PyArrow stringsFixes an issue where regex patterns with alternation (|) producedifferent results between str dtype and string[pyarrow] dtype. Whenusing patterns like "(as)|(as)", PyArrow implementation wouldincorrectly match "asdf" while Python's implementation correctlyrejects it. The fix adds special handling to ensure alternationpatterns are properly parenthesized when using PyArrow-backedstrings
| ) | ||
| if is_pyarrow and "|" in pat: | ||
| def _is_fully_wrapped(pattern): |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others.Learn more.
This appears to be an improper solution to me. Can you explain why the current code path fails?
…sage of regex flags
Sign up for freeto join this conversation on GitHub. Already have an account?Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
in PyArrow strings
Fixes an issue where regex patterns with alternation (|) produce different results between str dtype and string[pyarrow] dtype. When using patterns like "(as)|(as)", PyArrow implementation would incorrectly match "asdf" while Python's implementation correctly rejects it. The fix adds special handling to ensure alternation patterns are properly parenthesized when using PyArrow-backed strings