nose testing framework needs to be replaced

[ametzler]

nose is soon going to be in in unsupported mode (python 3.13 will remove lib2to3 which nose is using.)

The nose homepage says:

Note to Users

Nose has been in maintenance mode for the past several years and will likely cease without a new person/team to take over maintainership. New projects should consider using Nose2, py.test, or just plain unittest/unittest2.