- use lazy string formatting in logging calls
- some Python3 fixes
- remove print statements

Fix style and syntax errors discovered by the flake8 unit test.


Former-commit-id: 2bd5db6c

Replace the CfgLogMsg with the regular athena logging module.


Former-commit-id: 9251d3a1

Walter Lampl authored 6 years ago and Mark Hodgkinson committed 6 years ago

Former-commit-id: 88f22473