Distutils: Python version information

[Samuel]

In Python cheese shop, there is a field that shows the Python version
that is required by a listed package.

I have not found this covered in the distutils documentation: How do
you add the Python version information into the setup script of a
package?

Unfortunately, the keyword list:

http://docs.python.org/dist/meta-data.html

is incomplete (for example, the "provides" and "requires" keywords are
not listed, even though covered in the previous chapters of the
documentation).

-Samuel