Py3: PartDesign: relative imports

src/Mod/PartDesign/InitGui.py

@@ -39,7 +39,7 @@ class PartDesignWorkbench ( Workbench ):
     def Initialize(self):
         # load the module
         try:
-            from WizardShaft import WizardShaft
+            from PartDesign.WizardShaft import WizardShaft
         except ImportError:
             print("Wizard shaft module cannot be loaded")
             try:
@@ -50,7 +50,7 @@ class PartDesignWorkbench ( Workbench ):
         import PartDesignGui
         import PartDesign
         try:
-            import InvoluteGearFeature
+            from PartDesign import InvoluteGearFeature
         except ImportError:
             print("Involute gear module cannot be loaded")
             #try:

src/Mod/PartDesign/WizardShaft/Shaft.py

@@ -22,9 +22,9 @@
 # ******************************************************************************/
 
 import FreeCAD, FreeCADGui
-from SegmentFunction import SegmentFunction,  IntervalFunction,  StressFunction,  TranslationFunction
-from ShaftFeature import ShaftFeature
-from ShaftDiagram import Diagram
+from .SegmentFunction import SegmentFunction,  IntervalFunction,  StressFunction,  TranslationFunction
+from .ShaftFeature import ShaftFeature
+from .ShaftDiagram import Diagram
 import math
 
 class ShaftSegment:

src/Mod/PartDesign/WizardShaft/WizardShaft.py

@@ -22,8 +22,8 @@
 
 import FreeCAD, FreeCADGui
 from PySide import QtCore, QtGui
-from WizardShaftTable import WizardShaftTable
-from Shaft import Shaft
+from .WizardShaftTable import WizardShaftTable
+from .Shaft import Shaft
 
 class TaskWizardShaft:
     "Shaft Wizard"