these exceptions do not have a 'message' member

https://stackoverflow.com/a/33239954/874701
#39 (comment)

Author: thorade

OMPython/__init__.py

@@ -313,7 +313,7 @@ def getParameterNames(self, className):
         try:
             return self.ask('getParameterNames', className)
         except KeyError as ex:
-            logger.warning('OMPython error: {0}'.format(ex.message))
+            logger.warning('OMPython error: {0}'.format(ex))
             # FIXME: OMC returns with a different structure for empty parameter set
             return []
 
@@ -339,7 +339,7 @@ def getComponentModifierValue(self, className, componentName):
                 OMParser.result = {}
                 return answer[2:]
             except (TypeError, UnboundLocalError) as ex:
-                logger.warning('OMParser error: {0}'.format(ex.message))
+                logger.warning('OMParser error: {0}'.format(ex))
                 return result
 
     def getExtendsModifierNames(self, className, componentName):
@@ -357,7 +357,7 @@ def getExtendsModifierValue(self, className, extendsName, modifierName):
                 OMParser.result = {}
                 return answer[2:]
             except (TypeError, UnboundLocalError) as ex:
-                logger.warning('OMParser error: {0}'.format(ex.message))
+                logger.warning('OMParser error: {0}'.format(ex))
                 return result
 
     def getNthComponentModification(self, className, comp_id):