[vtkusers] vtkEventQtSlotConnect and python

[José M. Rodriguez Bacallao]

there is any advantages on using vtkEventQtSlotConnect from python, I
can see the advantage when using vtk from C/C++ but not when using it
from python because with python I can add any callable as observer of
any vtk event, I am missing something?

PD: by the way, adding an observer to a vtk event from python still
cause a reference cycle?