xpress9
Python bindings for the Xpress9 compression library
Decision gist · record as of 2026-08-14
Yes, if you specifically need Xpress9 compression and accept the aging maintenance status. The package is stable for its current scope (Beta), has no known vulnerabilities, and offers permissive licensing. However, the limited community adoption (5 stars, 257 days since last release) and aging status suggest it may not receive timely updates or bug fixes. Install if Xpress9 is a hard requirement; consider alternatives if you need active maintenance and community support.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires a C compiler (gcc, clang, or MSVC) and build tools to install from source; prebuilt wheels available for Python 3.8–3.13 on common platforms reduce this requirement.
- Medium install friction due to compiled C extension requiring a C compiler and build tools.
- The package has broad wheel coverage for Python 3.8–3.13 on Windows, macOS, and Linux, reducing friction for standard platforms.
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing commercial and private use with minimal restrictions. You may use, modify, and distribute the package freely provided you include the original license notice.
last release 2025-11-30 (257 days) · last repo commit 2025-11-30 · 5 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 249,302 downloads/mo, #8,651 on PyPI
Alternatives
Verify before relying
from xpress9 import Xpress9
x = Xpress9()
original_data = b"Hello, world! " * 64
compressed_data = x.compress(original_data, len(original_data))
decompressed_data = x.decompress(compressed_data, len(original_data))- Whether OpenMP is automatically enabled on Linux/Windows or requires manual configuration.
- Real-world compression ratios and performance benchmarks compared to other compression libraries.
- Stability and production-readiness of the Beta-status implementation.
What it is and what it does
Xpress9 is a lightweight Python wrapper around Microsoft's Xpress9 compression algorithm, exposing compress and decompress methods through a C extension built with Cython. It targets scenarios where you need efficient binary compression with cross-platform support and optional multi-threading via OpenMP.
The package is designed for developers who need a direct interface to Xpress9 compression without external dependencies beyond the C compiler at build time. It supports Python 3.8 and higher across Windows, macOS, and Linux. Prebuilt wheels are available for common Python versions and architectures, though building from source requires a C compiler and standard build tools.
Use it for
- Compress repetitive or highly compressible binary data in Python applications where Xpress9 is the preferred algorithm.
- Integrate Xpress9 compression into data pipelines or storage systems that need cross-platform compatibility.
- Decompress Xpress9-encoded data received from external systems or APIs.
- Build performance-sensitive applications where optional OpenMP multi-threading can improve throughput on multi-core systems.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you specifically need Xpress9 compression and accept the aging maintenance status.
The package is stable for its current scope (Beta), has no known vulnerabilities, and offers permissive licensing. However, the limited community adoption (5 stars, 257 days since last release) and aging status suggest it may not receive timely updates or bug fixes. Install if Xpress9 is a hard requirement; consider alternatives if you need active maintenance and community support.
Install
xpress9 on PyPI
Before you install
Medium install friction due to compiled C extension requiring a C compiler and build tools. The package has broad wheel coverage for Python 3.8–3.13 on Windows, macOS, and Linux, reducing friction for standard platforms. Maintenance status is aging—last release was 257 days ago and the repository has only 5 stars, suggesting limited active development and community adoption.
Requires a C compiler (gcc, clang, or MSVC) and build tools to install from source; prebuilt wheels available for Python 3.8–3.13 on common platforms reduce this requirement.
License in practice
MIT license is permissive, allowing commercial and private use with minimal restrictions. You may use, modify, and distribute the package freely provided you include the original license notice.
Quickstart
from xpress9 import Xpress9
x = Xpress9()
original_data = b"Hello, world! " * 64
compressed_data = x.compress(original_data, len(original_data))
decompressed_data = x.decompress(compressed_data, len(original_data))Verify before relying
- Whether OpenMP is automatically enabled on Linux/Windows or requires manual configuration.
- Real-world compression ratios and performance benchmarks compared to other compression libraries.
- Stability and production-readiness of the Beta-status implementation.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Aging 257 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 249,302 / month, #8,651 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 :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Python ModulesTopic :: System :: Archiving :: Compression |
Evidence: xpress9-0.3.8-cp310-cp310-macosx_11_0_universal2.whl; xpress9-0.3.8-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; xpress9-0.3.8-cp310-cp310-manylinux_2_17_i686.manylinux2014_i686.whl; xpress9-0.3.8-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; xpress9-0.3.8-cp310-cp310-win_amd64.whl; xpress9-0.3.8-cp311-cp311-macosx_11_0_universal2.whl; xpress9-0.3.8-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; xpress9-0.3.8-cp311-cp311-manylinux_2_17_i686.manylinux2014_i686.whl; xpress9-0.3.8-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; xpress9-0.3.8-cp311-cp311-win_amd64.whl; xpress9-0.3.8-cp312-cp312-macosx_11_0_universal2.whl; xpress9-0.3.8-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; xpress9-0.3.8-cp312-cp312-manylinux_2_17_i686.manylinux2014_i686.whl; xpress9-0.3.8-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; xpress9-0.3.8-cp312-cp312-win_amd64.whl; xpress9-0.3.8-cp313-cp313-macosx_11_0_universal2.whl; xpress9-0.3.8-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; xpress9-0.3.8-cp313-cp313-manylinux_2_17_i686.manylinux2014_i686.whl; xpress9-0.3.8-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; xpress9-0.3.8-cp313-cp313-win_amd64.whl
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See also xpress8 · ncompress · python-neo-lzf · python-lzf · lzallright · lzstring · compressed-rtf · unlzw3 · lzfse · stream-inflate