VTKPythonAlgorithmBase object in Python shell

ParaView Support
,
1

I created a VTKPythonAlgorithmBase source for ParaView. Within the constructor the return object _mp of createMachine() is stored as attribute.

@smproxy.source( name="dtOOReaderName", label="dtOOReaderLabel" )
class dtOOReader(VTKPythonAlgorithmBase):
  def __init__(self):
    VTKPythonAlgorithmBase.__init__(self,
      nInputPorts=0,
      nOutputPorts=1,
      outputType='vtkPolyData'
    )
    self.mp_ = createMachine()
    [...]

Is there any way to get a reference to my source class within the Python shell of ParaView? I would like to have access to my attribute mp_ within the shell. I already figured out that I can access the sources like this:

>>> from paraview.simple import *
>>> type(GetSources()[('dtOOReaderLabel1', '9414')])
<class 'paraview.servermanager.dtOOReaderLabel'>

But this object is not my original one. I guess this is kind of a proxy.

Thanks in advance.
Alex

2

Indeed, ParaView do not manipulate the algorithm classes directly but only proxies.

The correct way is to create some property to access the information you want. Some documentation here: 5. Programmable Filter — ParaView Documentation 5.11.0 documentation

3

Hi Nicolas,

thank you very much for the answer. What a pity that it does not work.

The correct way is to create some property to access the information you want.

To be sure that I understand you correct: You do not mean that I should store id(self) (the id of my object) within a property and access it?

For me as a temporary workaround, I can access the original class by a static class attribute:

class dtOOReader(VTKPythonAlgorithmBase):
  SELF = None
  def __init__(self):
    [...]
    dtOOReader.SELF = self
    [...]

I know this is a “crowbar solution”.

Thanks,
Alex