chore(langchain): enable ruff docstring-code-format in langchain

[Christophe Bornet (cbornet)]

No description provided.

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1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
langchain	Ignored	Preview		Sep 9, 2025 1:06am

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #32858 will not alter performance

_{Comparing cbornet:langchain-docstring-code-format (34a12c2) with master (714f74a)}

⚠️ Unknown Walltime execution environment detected

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For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 13 untouched benchmarks

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #32858 will not alter performance

_{Comparing cbornet:langchain-docstring-code-format (34a12c2) with master (714f74a)}

Summary

✅ 14 untouched benchmarks

[Copilot]

Pull Request Overview

This PR enables ruff's docstring-code-format feature in the langchain library by adding the configuration to pyproject.toml and reformatting code blocks in docstrings throughout the codebase to meet the formatting standards.

Key Changes

• Enable ruff docstring code formatting in pyproject.toml
• Format code blocks within docstrings for better readability and consistency
• Break up long string literals that exceeded line length limits

Reviewed Changes

Copilot reviewed 61 out of 63 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Added ruff docstring-code-format configuration
Various test files	Reformatted long string literals and multiline code blocks
Various source files	Reformatted docstring code examples and broke up long string concatenations

[Mason Daugherty (mdrxy)]

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