[Python-Dev] version compare function into main lib
eric at trueblade.com
Fri Mar 27 17:30:35 CET 2009
Mart Sõmermaa wrote:
> Instead of trying to parse some version string, distutils should
> require defining the version as tuple with well-defined entries -
> much like what we have in sys.version_info for Python.
> The developer can then still use whatever string format s/he wants.
> The version compare function would then work on this version tuple
> and probably be called cmp() (at least in Python 2.x ;-).
> Except there need to be functions for parsing the tuple from a string
> and preferably a canonical string representation to ease that parsing.
> Hence the Version class in "Version Handling" referred to above.
Right. For example, say you need to specify in a config file that your
package requires version 1.3.4 of some other tool. I think the only
rational way to do this is in a string, and be able to parse the version
number (possibly into a tuple) and compare it with other version
numbers. I don't think you want to directly specify the tuple in such a
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