What is the standard sort order for Python version / version numbers?

Question

Python pipand easy_installfollow some rules for sorting packages by release numbers. What are the rules for numbering beta / release / fix releases so that these tools know what is the newest?

Answer 1

This is a sore point for many people. setuptoolsand easy_installhave some pretty weird rules trying to play with everyone. You can read the full rules in the method setuptools parse_version, but here's a summary:

• . 4.5.6.7 , ("4", "5", "6", "7").

• - . 2.4.0 - , 2.4; 2.4.05 2.4.5.

• - . 2.4.a5 2.4.A5.

• , , "" , , 2.4.5b , , 2.4.5.

• , "pre", "preview" "rc" , "c". "dev" "@", . x.y.z-dev x.y.z.

, , , PEP 386.

Answer 2

: doc string pkg_resources.py function parse_version().

Answer 3

1.0a1 1.0b2 1.0.

:

• http://www.python.org/dev/peps/pep-0386/#the-new-versioning-algorithm
• http://tarekziade.wordpress.com/2009/11/18/distutils-and-distribute-status-part-1/
• http://bitbucket.org/tarek/distutilsversion/

: http://peak.telecommunity.com/DevCenter/setuptools#specifying-your-project-s-version