How To Specify Python Interpreter for ParaView

ParaView Support
1

Hi, Guys,
I have built a ParaView executable and added many python Macros to it.
Then I want to distribute my executable to my friends. Everything works as expected except someone has Python 3.7 installed on his PC that paraview crashes when running Macros. I have tested that reinstall Python 3.6.5 will fix it.

So my question is:
Can I specify a python interpreter for paraview(Specific version or packed with paraview executable), or compile a Paraview Executable in which python interpreter can be manually configured.

my build configurations:
Win10
Visual Studio 12 2013 Win64
Python 3.6.5
Qt 5.9

2

Not at run-time, at least not yet.

Most definitely, set the cmake option PYTHON_EXECUTABLE

However, difference between Python 3.7 nd Python 3.6.5 are minimal, so maybe fixing the error is worthwhile.

3

Thanks for your replay,
I have debug the process, ParaView crash at Py_InitializeEx(vtkPythonInterpreter.cxx:246) in vtkPythonInterpreter::Initialize().
It seems that it cannot find python.exe for different version. So would it be possible to use Paraview compiled with PYTHON_EXECUTABLE={python3.6} in a PC with python 3.7 installed?

btw, how does ParaView executable find python interpreter? Maybe modify Windows Register table entry or Environment Variable can make it works? Since I have tested my Macro code can run both in python 3.6 and 3.7.

4

Not supported, you will have to build ParaView yourself or figure out why your script is not working with Python 3.7

5

I found the way to remove denpendency of python from cmake-installed paraview executable. Thanks to the exe Windows Installer:
Just copy following file/folder from python_dir(e.g. c:/python/python36/) to Paraview/bin/

  • python3x.dll
  • DLLs
  • Lib

By doing so, Paraview become fully portable, no need for python installed on the target PC. Thus no need to specify python interpretor version(I went a wrong direction last year:).