ruamel.yaml.clib
C version of reader, parser and emitter for ruamel.yaml derived from libyaml
Decision gist · record as of 2026-08-14
Yes, if you need this as a dependency of another package or require accelerated YAML 1.2 parsing. It installs with medium friction due to platform-specific wheels but provides no known security vulnerabilities. Maintenance is aging (last release 271 days ago), so monitor for compatibility issues with newer Python versions.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.9 or later.
- On systems without pre-built wheels, compilation of C code may be needed.
- Medium install friction due to compiled wheels for multiple platforms and Python versions (3.9–3.14).
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing commercial and private use with minimal restrictions—suitable for most projects.
last release 2025-11-16 (271 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 86,687,388 downloads/mo, #390 on PyPI
Alternatives
Verify before relying
pip install ruamel.yaml.clib
# This package is typically used as an internal component
# and does not expose a direct public API for standalone use.- How this package is intended to be used directly versus as an automatic dependency of another package.
- Performance improvement magnitude compared to pure Python YAML parsing in typical workloads.
- Whether automatic detection and use by consuming packages requires explicit configuration.
What it is and what it does
ruamel.yaml.clib is a C-based extension providing optimized YAML 1.2 reader, scanner, and emitter components derived from libyaml. It was split from the main package to allow universal wheel distribution and reduce compilation overhead. The package provides low-level parsing and emission acceleration through pre-compiled wheels for multiple platforms and architectures.
The package supports Python 3.9 through 3.14 on CPython and is distributed as pre-compiled wheels for macOS, Linux, Windows, and ARM architectures. It has no runtime dependencies and is designed to integrate transparently with consuming packages that need faster YAML processing.
Use it for
- Accelerate YAML parsing in applications that process large configuration files or high-volume YAML data.
- Reduce CPU overhead in services that repeatedly parse YAML documents by using compiled C code.
- Enable faster YAML serialization and emission in projects requiring performance-critical YAML operations.
- Support system-level installation of YAML parsing libraries on Linux without namespace conflicts.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need this as a dependency of another package or require accelerated YAML 1.2 parsing.
It installs with medium friction due to platform-specific wheels but provides no known security vulnerabilities. Maintenance is aging (last release 271 days ago), so monitor for compatibility issues with newer Python versions.
Install
ruamel-yaml-clib on PyPI
Before you install
Medium install friction due to compiled wheels for multiple platforms and Python versions (3.9–3.14). Last release was 271 days ago; maintenance status is aging, so expect slower response to issues.
Requires Python 3.9 or later. On systems without pre-built wheels, compilation of C code may be needed.
License in practice
MIT license is permissive, allowing commercial and private use with minimal restrictions—suitable for most projects.
Quickstart
pip install ruamel.yaml.clib
# This package is typically used as an internal component
# and does not expose a direct public API for standalone use.Verify before relying
- How this package is intended to be used directly versus as an automatic dependency of another package.
- Performance improvement magnitude compared to pure Python YAML parsing in typical workloads.
- Whether automatic detection and use by consuming packages requires explicit configuration.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Aging 271 days since the last release |
| First released | |
| Downloads | 86,687,388 / month, #390 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonTopic :: Software Development :: Libraries :: Python Modules |
Evidence: ruamel_yaml_clib-0.2.15-cp310-cp310-macosx_10_9_x86_64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-macosx_11_0_arm64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-manylinux1_i686.manylinux_2_28_i686.manylinux_2_5_i686.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-musllinux_1_2_aarch64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-musllinux_1_2_i686.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-musllinux_1_2_x86_64.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-win32.whl; ruamel_yaml_clib-0.2.15-cp310-cp310-win_amd64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-macosx_10_9_x86_64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-macosx_11_0_arm64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-manylinux1_i686.manylinux_2_28_i686.manylinux_2_5_i686.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.manylinux_2_28_x86_64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-musllinux_1_2_aarch64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-musllinux_1_2_i686.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-musllinux_1_2_x86_64.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-win32.whl; ruamel_yaml_clib-0.2.15-cp311-cp311-win_amd64.whl
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