[Paraview] Python VTK readers

[Utkarsh Ayachit]

>   - reading legacy VTK files?
It's called "LegacyVTKReader"

>   - reading any VTK file? I mean a general VTK file reader able to call the
> appropriate reader, such as vtkDataSetReader in Tcl

The equivalent of vtkDataSetReader is indeed the "LegacyVTKReader".

>   - some way to just read the header of a file and get the dataset type, in
> order to check if the file type is appropriate for a given processing task?

How to plan on checking if the file type is appropriate? Not sure what
you are trying to do here.

Utkarsh