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A standalone variant of distutils.version and packaging.version, without anything else.

verlib is the implementation of PEP 386. verlib2 is the implementation of PEP 440. It also includes the original distutils.version implementation, for those who need it going forward.

Everyone needs to compare versions, but no one wants to add packaging as a dependency. distutils is deprecated, and Python 3.12 removed it from the standard library.

pip install verlib2

from verlib2 import Version assert Version("1.0.dev456") < Version("1!1.2.rev33+123456") 

Note: verlib2.Version provides packaging's Version, while both implementations can be accessed like this:

from verlib2.distutils.version import LooseVersion, StrictVersion from verlib2.packaging.version import Version

Greg Stein, Greg Ward, Donald Stufft, Tarek Ziadé, and all contributors to distutilsversion, verlib, distutils, distutils2, packaging.version, PEP-0386, PEP-0440, and most probably many more.

• https://peps.python.org/pep-0386/
• https://peps.python.org/pep-0440/
• http://bitbucket.org/tarek/distutilsversion/
• https://pypi.org/project/verlib/
• https://hg.python.org/distutils2
• https://github.com/pypa/packaging/blob/23.2/src/packaging/version.py
• numpy/numpy#21000
• https://github.com/numpy/numpy/blob/v1.26.0/numpy/_utils/_pep440.py
• crate/crate-python#513
• https://pypi.org/search/?q=pep440
• https://pypi.org/project/pep440/
• https://pypi.org/project/pep440deb/
• https://pypi.org/project/pep440nz/
• https://pypi.org/project/pep440-rs/
• https://pypi.org/project/pep440-utility/
• https://pypi.org/project/pep440-version-utils/
• https://pypi.org/project/version-utils/

Set up package in development mode.

python3 -m venv .venv source .venv/bin/activate pip install --editable='.[develop,test]'

Run software tests.

poe check