How do I know if a package is supported from python-apt

[Noam Raphael]

Hello,

This list is listed as the maintainer of python-apt, so I ask this
question here. I hope it's ok (please CC me, as I didn't subscribe.)

Is there a way to get from python-apt the info of whether a package is
supported or not? I'm trying to write a utility that will assist in
removing unneeded packages, and it seems to me that knowing whether a
package is supported or not can help decide whether to remove a
package or not.

Thanks,
Noam Raphael