Use logging instead of prints

beat/core/test/test_invalid_database.py

@@ -31,14 +31,18 @@ from ..database import Database
 
 from . import prefix
 
+import logging
+logger = logging.getLogger(__name__)
+
+
 def doit(filename, error_msg):
     database = Database(prefix, filename)
     assert database.errors
-    print(error_msg)
+    logger.error(error_msg)
     found = False
 
     for msg in database.errors:
-        print(msg, error_msg)
+        logger.error('%s %s', msg, error_msg)
         if msg.find(error_msg) != -1:
             found = True
             break