PERF: use PyArrow native cast for int/bool to string conversion#64762
Draft
jbrockmendel wants to merge 1 commit intopandas-dev:mainfrom
Draft
PERF: use PyArrow native cast for int/bool to string conversion#64762jbrockmendel wants to merge 1 commit intopandas-dev:mainfrom
jbrockmendel wants to merge 1 commit intopandas-dev:mainfrom
Conversation
Use PyArrow's native pc.cast() instead of element-wise lib.ensure_string_array() when casting integer and boolean dtypes to string[pyarrow]. This applies to numpy int/uint/bool arrays and BaseMaskedArray (IntegerArray/BooleanArray) paths in ArrowStringArray._from_sequence. closes pandas-dev#56505 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Summary
pc.cast()instead of element-wiselib.ensure_string_array()when casting integer and boolean dtypes tostring[pyarrow]inArrowStringArray._from_sequenceBaseMaskedArray(IntegerArray/BooleanArray) code paths_from_sequencelevelcloses #56505
Test plan
Series.astype("string")tests for int, bool, and nullable int🤖 Generated with Claude Code