Could we extend the pseudo-format of the versions a little to also
include variants which use more than just one character and also
allow hyphens and spaces to be used for additional clarity ?
VERSION_RE = re.compile(r'''
^
(?P<version>\d+\.\d+) # minimum 'N.N'
(?P<extraversion>(?:\.\d+)*) # any number of extra '.N' segments
(?:
[- .]*
(?P<prerel>[a-z]+) # 'a'=alpha, 'b'=beta, 'c'=release candidate
[- .]*
(?P<prerelversion>\d+(?:\.\d+)*)
)?
(?P<postdev>
([- .]*post[- .]*(?P<post>\d+))?
([- .]*dev[- .]*(?P<dev>\d+))?
)?
$''', re.VERBOSE + re.I)
The pre-release marker would then be interpreted in alphabetical
order, ie. 'alpha' < 'beta' < 'rc'.
This minor change would broaden the scope of the scheme somewhat
and make it more compatible to what's being used outside the
python-dev sphere (esp. with respect to 'c' standing for release
candidate... unless you happen to read it as gamma ;-).
The added optional hypens and spaces make the versions more
readable, IMHO.
--
Marc-Andre Lemburg
eGenix.com
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