Python Licenses

As I am working on the new version of the PyDigger I am trying to make sense (again) the licenses of Python packages on PyPI.

A lot of packages don't have a "license" field in their meta-data.

Among those that have, most have a short identifier of a license, but it is not enforced in any way.

Some packages include the full text of a license in that meta field. Some include some arbitrary text.

Two I'd like to point out that I found just in the last few minutes:

I have no idea how many people actually pay attention to the license information before they start using something, but I feel the lack of unified way to identify licenses is problematic.

I have not checked any of the discussions about the topic so I am not aware of the current state of thinking about this and the potential obstacles, for now, I am just pointing at this problem.