Stop using print statments or root level loggers

pyproject.toml

@@ -114,8 +114,8 @@ select = [
     "C", # Flake8 comprehensions
     "FIX", #TODO/FIXME's in code. These should be added during development for ongoing tasks.
            # If they are not fixed before merge they should be converted to GitLab issues
-#    "LOG", # Flake8 logging issues (pedantic logger formatting issues can be added with "G")
-#    "T20", # Warns for print statements, production code should log
+    "LOG", # Flake8 logging issues (pedantic logger formatting issues can be added with "G")
+    "T20", # Warns for print statements, production code should log
 #    "PT", # pytest linting
     "RET", # Consistent clear return statements
     "RSE", # Raise parentheses
@@ -140,10 +140,17 @@ ignore = [
 ]
 
 [tool.ruff.lint.per-file-ignores]
+# All testing dirs
 "{tests,integration-tests,hardware-specific-tests}/**" = [
     "B018", # Complaining about useless attribute access in tests, but we need them to check errors are raised
     "ANN", # Tests are not typehinted for fixtures etc
     "S101", # Allow asserts in tests
+    "T20", # Allow prints in tests
+    "LOG015",# Allow tests to use the root logger.
+]
+# Developer CLI scripts
+"{pull_webapp,picamera_tests,change_log_helper}.py" = [
+    "T20", # Printing is normal in small CLI scripts
 ]
 
 [tool.ruff.lint.pydocstyle]