--- a/py_ext/__init__.py	Tue Oct 10 12:50:10 2017 +0300
+++ b/py_ext/__init__.py	Tue Oct 10 13:21:48 2017 +0300
@@ -23,6 +23,6 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 from __future__ import absolute_import
-from py_ext.py_ext import *
-from py_ext.PythonEditor import PythonEditor
-from py_ext.PythonFileCTNMixin import PythonFileCTNMixin
+from .py_ext import *
+from .PythonEditor import PythonEditor
+from .PythonFileCTNMixin import PythonFileCTNMixin

--- a/tests/tools/check_source.sh	Tue Oct 10 12:50:10 2017 +0300
+++ b/tests/tools/check_source.sh	Tue Oct 10 13:21:48 2017 +0300
@@ -235,6 +235,7 @@
     enable=$enable,W0631          # (undefined-loop-variable) Using possibly undefined loop variable 'X'
     enable=$enable,W0104          # (pointless-statement) Statement seems to have no effect
     enable=$enable,W0107          # (unnecessary-pass) Unnecessary pass statement
+    enable=$enable,W0406          # (import-self) Module import itself
     # enable=
 
     options=

--- a/xmlclass/__init__.py	Tue Oct 10 12:50:10 2017 +0300
+++ b/xmlclass/__init__.py	Tue Oct 10 13:21:48 2017 +0300
@@ -24,13 +24,12 @@
 
 # Package initialisation
 from __future__ import absolute_import
-from xmlclass.xmlclass import \
-    ClassFactory, \
-    GenerateParser, \
-    DefaultElementClass, \
-    GetAttributeValue, \
-    time_model, \
-    CreateNode, \
-    NodeSetAttr, \
-    NodeRenameAttr
-from xmlclass.xsdschema import XSDClassFactory, GenerateParserFromXSD, GenerateParserFromXSDstring
+from .xmlclass import (ClassFactory,
+                       GenerateParser,
+                       DefaultElementClass,
+                       GetAttributeValue,
+                       time_model,
+                       CreateNode,
+                       NodeSetAttr,
+                       NodeRenameAttr)
+from .xsdschema import XSDClassFactory, GenerateParserFromXSD, GenerateParserFromXSDstring