Version Number Comparison Function

[Steve M]

I recently saw this:

http://www.egenix.com/files/python/mxTools.html

 mx.Tools.verscmp(a,b)
    Compares two version strings and returns a cmp() function
compatible value (<,==,> 0). The function is useful for sorting lists
containing version strings.

    The logic used is as follows: the strings are compared at each
level, empty levels defaulting to '0', numbers with attached strings
(e.g. '1a1') compare less than numbers without attachement (e.g. '1a1'
< '1).

Keith wrote:
> Is there a function for comparing version numbers?
> 
> E.g.
> 
> 0.1.0 < 0.1.2
> 1.876b < 1.876c
> 3.2.2 < 3.4
> 
> Keith