Add __ge__ and __le__ to the Enum class (#126)

Author: olssonsimon

virtualbox/library_base.py

@@ -84,9 +84,15 @@ def __ne__(self, k):
     def __lt__(self, k):
         return int(self) < int(k)
 
+    def __le__(self, k):
+        return int(self) <= int(k)
+
     def __gt__(self, k):
         return int(self) > int(k)
 
+    def __ge__(self, k):
+        return int(self) >= int(k)
+
     def __cmp__(self, k):
         return (int(self) > int(k)) - (int(self) < int(k))
 
@@ -209,6 +215,7 @@ def _call_method(self, method, in_p=None):
             # TODO: get the Linux/Darwin specific args struct
 
             if errobj.msg is None:
-                errobj.msg = getattr(exc, 'msg', getattr(exc, 'message'))
+                default_msg = getattr(exc, 'message', str(exc))
+                errobj.msg = getattr(exc, 'msg', default_msg)
             raise errobj
         return ret