BUG: Fix from Prabhu for python versions before 2.3.
BUG: Fix from Prabhu for python versions before 2.3.

naucoin/VTKSlicerWidgets,gram526/VTK,sumedhasingla/VTK,demarle/VTK,naucoin/VTKSlicerWidgets,naucoin/VTKSlicerWidgets,aashish24/VTK-old,jeffbaumes/jeffbaumes-vtk,ashray/VTK-EVM,ashray/VTK-EVM,gram526/VTK,SimVascular/VTK,sankhesh/VTK,biddisco/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,sankhesh/VTK,johnkit/vtk-dev,sumedhasingla/VTK,johnkit/vtk-dev,arnaudgelas/VTK,keithroe/vtkoptix,johnkit/vtk-dev,daviddoria/PointGraphsPhase1,spthaolt/VTK,msmolens/VTK,aashish24/VTK-old,cjh1/VTK,mspark93/VTK,naucoin/VTKSlicerWidgets,demarle/VTK,demarle/VTK,Wuteyan/VTK,candy7393/VTK,keithroe/vtkoptix,Wuteyan/VTK,msmolens/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,sumedhasingla/VTK,keithroe/vtkoptix,candy7393/VTK,berendkleinhaneveld/VTK,biddisco/VTK,ashray/VTK-EVM,collects/VTK,Wuteyan/VTK,sankhesh/VTK,hendradarwin/VTK,demarle/VTK,spthaolt/VTK,cjh1/VTK,hendradarwin/VTK,mspark93/VTK,ashray/VTK-EVM,aashish24/VTK-old,daviddoria/PointGraphsPhase1,spthaolt/VTK,msmolens/VTK,msmolens/VTK,arnaudgelas/VTK,sumedhasingla/VTK,johnkit/vtk-dev,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,mspark93/VTK,jmerkow/VTK,ashray/VTK-EVM,mspark93/VTK,spthaolt/VTK,spthaolt/VTK,candy7393/VTK,gram526/VTK,keithroe/vtkoptix,arnaudgelas/VTK,SimVascular/VTK,keithroe/vtkoptix,Wuteyan/VTK,sumedhasingla/VTK,arnaudgelas/VTK,msmolens/VTK,demarle/VTK,SimVascular/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,collects/VTK,collects/VTK,arnaudgelas/VTK,naucoin/VTKSlicerWidgets,arnaudgelas/VTK,mspark93/VTK,jmerkow/VTK,jmerkow/VTK,hendradarwin/VTK,hendradarwin/VTK,biddisco/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,spthaolt/VTK,johnkit/vtk-dev,biddisco/VTK,daviddoria/PointGraphsPhase1,aashish24/VTK-old,candy7393/VTK,keithroe/vtkoptix,jmerkow/VTK,sankhesh/VTK,gram526/VTK,hendradarwin/VTK,cjh1/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,johnkit/vtk-dev,jmerkow/VTK,mspark93/VTK,collects/VTK,gram526/VTK,sumedhasingla/VTK,demarle/VTK,ashray/VTK-EVM,sankhesh/VTK,cjh1/VTK,msmolens/VTK,candy7393/VTK,Wuteyan/VTK,SimVascular/VTK,demarle/VTK,gram526/VTK,naucoin/VTKSlicerWidgets,SimVascular/VTK,aashish24/VTK-old,daviddoria/PointGraphsPhase1,demarle/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,cjh1/VTK,SimVascular/VTK,sankhesh/VTK,mspark93/VTK,SimVascular/VTK,collects/VTK,SimVascular/VTK,Wuteyan/VTK,msmolens/VTK,cjh1/VTK,spthaolt/VTK,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,ashray/VTK-EVM,aashish24/VTK-old,gram526/VTK,msmolens/VTK,Wuteyan/VTK,jmerkow/VTK,mspark93/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,gram526/VTK,biddisco/VTK,collects/VTK,biddisco/VTK,keithroe/vtkoptix,ashray/VTK-EVM,candy7393/VTK,sankhesh/VTK,candy7393/VTK,biddisco/VTK