set logger levels through handler

pynxtools/dataconverter/logger.py

@@ -22,4 +22,8 @@
 logger = logging.getLogger("pynxtools")
 
 # Lowest level log allows to other levels erros, crittical, info and debug
+handler = logging.StreamHandler()
+formatter = logging.Formatter("%(message)s")
+handler.setFormatter(formatter)
+logger.addHandler(handler)
 logger.setLevel(logging.DEBUG)