diff --git a/wstools/Utility.py b/wstools/Utility.py
index 251be2d..5037d21 100644
--- a/wstools/Utility.py
+++ b/wstools/Utility.py
@@ -863,7 +863,7 @@ class ElementProxy(Base, MessageInterface):
             prefix = 'ns%d' % self._indx
             try:
                 self._dom.findNamespaceURI(prefix, self._getNode())
-            except DOMException, ex:
+            except DOMException as ex:
                 break
         return prefix
 
@@ -877,7 +877,7 @@ class ElementProxy(Base, MessageInterface):
             if node and (node.nodeType == node.ELEMENT_NODE) and \
                     (nsuri == self._dom.findDefaultNS(node)):
                 return None
-        except DOMException, ex:
+        except DOMException as ex:
             pass
         if nsuri == XMLNS.XML:
             return self._xml_prefix
@@ -928,7 +928,7 @@ class ElementProxy(Base, MessageInterface):
     def getPrefix(self, namespaceURI):
         try:
             prefix = self._getPrefix(node=self.node, nsuri=namespaceURI)
-        except NamespaceError, ex:
+        except NamespaceError as ex:
             prefix = self._getUniquePrefix()
             self.setNamespaceAttribute(prefix, namespaceURI)
         return prefix
@@ -1025,7 +1025,7 @@ class ElementProxy(Base, MessageInterface):
         if namespaceURI:
             try:
                 prefix = self.getPrefix(namespaceURI)
-            except KeyError, ex:
+            except KeyError as ex:
                 prefix = 'ns2'
                 self.setNamespaceAttribute(prefix, namespaceURI)
         qualifiedName = localName
diff --git a/wstools/XMLSchema.py b/wstools/XMLSchema.py
index 7da3712..bd4f39f 100644
--- a/wstools/XMLSchema.py
+++ b/wstools/XMLSchema.py
@@ -289,7 +289,7 @@ class DOMAdapter(DOMAdapterInterface):
         else:
             try:
                 namespace = DOM.findNamespaceURI(prefix, self.__node)
-            except DOMException, ex:
+            except DOMException as ex:
                 if prefix != 'xml':
                     raise SchemaError('%s namespace not declared for %s' % (prefix, self.__node._get_tagName()))
                 namespace = XMLNS.XML
@@ -629,7 +629,7 @@ class XMLSchemaComponent(XMLBase, MarkerInterface):
         if parent.targetNamespace == namespace:
             try:
                 obj = getattr(parent, collection)[name]
-            except KeyError, ex:
+            except KeyError as ex:
                 raise KeyError('targetNamespace(%s) collection(%s) has no item(%s)' % (namespace, collection, name))
 
             return obj
@@ -662,7 +662,7 @@ class XMLSchemaComponent(XMLBase, MarkerInterface):
 
         try:
             obj = getattr(schema, collection)[name]
-        except KeyError, ex:
+        except KeyError as ex:
             raise KeyError('targetNamespace(%s) collection(%s) has no item(%s)' % (namespace, collection, name))
 
         return obj
@@ -1228,13 +1228,13 @@ class XMLSchema(XMLSchemaComponent):
                     slocd[import_ns] = schema
                     try:
                         tp.loadSchema(schema)
-                    except NoSchemaLocationWarning, ex:
+                    except NoSchemaLocationWarning as ex:
                         # Dependency declaration, hopefully implementation
                         # is aware of this namespace (eg. SOAP,WSDL,?)
                         self.logger.debug("IMPORT: %s : %s" % (import_ns, ex))
                         del slocd[import_ns]
                         continue
-                    except SchemaError, ex:
+                    except SchemaError as ex:
                         #warnings.warn(\
                         #    '<import namespace="%s" schemaLocation=?>, %s'\
                         #    %(import_ns, 'failed to load schema instance')