except:
logger.log_exc("Cannot locate generic instance with flavour=%s"%flavour)
+ # provide default for importer_class
+ def importer_class (self):
+ return None
+
# in the simplest case these can be redefined to the class/module objects to be used
# see pl.py for an example
# some descendant of SfaApi
except:
logger.log_exc_critical(message)
-