vtkExtractEdges is improperly using INFO logs for DEBUG information
See
These messages are displayed anytime the filter executes and often show up as warnings in many Python environments. These should be changed to TRACE level as that is more in line with the information they are conveying.
In Python, I have ignored these by vtk.vtkLogger.SetStderrVerbosity(vtk.vtkLogger.VERBOSITY_OFF)
, but that then disables all logging for other scenarios where it is actually relevant.
cc @cory.quammen (as you had opinions on this offline)