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Version Handling
================
A core requirement of dealing with packages is the ability to work with
versions.
See `Version Specifiers Specification`_ for more details on the exact
format implemented in this module, for use in Python Packaging tooling.
.. _Version Specifiers Specification: https://packaging.python.org/en/latest/specifications/version-specifiers/
Usage
-----
.. doctest::
>>> from packaging.version import Version, parse
>>> v1 = parse("1.0a5")
>>> v2 = Version("1.0")
>>> v1
<Version('1.0a5')>
>>> v2
<Version('1.0')>
>>> v1 < v2
True
>>> v1.epoch
0
>>> v1.release
(1, 0)
>>> v1.pre
('a', 5)
>>> v1.is_prerelease
True
>>> v2.is_prerelease
False
>>> Version("french toast")
Traceback (most recent call last):
...
InvalidVersion: Invalid version: 'french toast'
>>> Version("1.0").post
>>> Version("1.0").is_postrelease
False
>>> Version("1.0.post0").post
0
>>> Version("1.0.post0").is_postrelease
True
Reference
---------
.. automodule:: packaging.version
:members:
:special-members:
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