Provide a proposed Full Name for the license or exception.

Python Imaging Library License

Provide a proposed Short Identifier.

PILL

Provide a functioning url reference to the license or exception text, either
from the author or a community recognized source.

https://github.com/python-pillow/Pillow/blob/master/LICENSE

Create and attach a text file with the license or exception text from the
url provided in #3

attached

Indicate whether the license is OSI-approved (see:
http://www.opensource.org/licenses/alphabetical) or whether it has been
submitted for approval to the OSI and is currently under review.

Not OSI approved. Not submitted to OSI.

Provide a short explanation regarding the need for this license or exception
to be included on the SPDX License List, including identifying at least one
program that uses this license.

The Python Imaging Library and the PILLOW fork are widely used.