[Installation Error, Python] ModuleNotFoundError when running test_python

[Tiria Andersen]

Hi guys,

I am trying to get or-tools running with python. 

I originally cloned & compiled for C++ and that solves perfectly fine. 

I cloned the source code (version 7.5) again into a different directory, and ran:

tools\make third_party

tools\make python

without any errors. 

But when running tools\make test_python, it solves the first 3 problems, then chucks:

set PYTHONPATH=C:\\Users\\jc321076\\Documents\\PhD\\github\\Autonomous_DSVRP\\or-tools;C:\\Users\\jc321076\\Documents\\PhD\\github\\Autonomous_DSVRP\\or-tools\\dependencies\\sources\\protobuf-3.11.2\\python && "C:\Users\jc321076\AppData\Local\Programs\Python\Python37\python.exe" ortools\\constraint_solver\\samples\\simple_routing_program.py

Traceback (most recent call last):

  File "ortools\\constraint_solver\\samples\\simple_routing_program.py", line 18, in <module>

    from ortools.constraint_solver import routing_enums_pb2

  File "C:\Users\jc321076\Documents\PhD\github\Autonomous_DSVRP\or-tools\ortools\constraint_solver\..\gen\ortools\constraint_solver\routing_enums_pb2.py", line 5, in <module>

    from google.protobuf import descriptor as _descriptor

  File "C:\Users\jc321076\Documents\PhD\github\Autonomous_DSVRP\or-tools\dependencies\sources\protobuf-3.11.2\python\google\protobuf\descriptor.py", line 38, in <module>

    import six

ModuleNotFoundError: No module named 'six'

tools\make: *** [rpy_simple_routing_program] Error 1

Any ideas on why it's doing this?

(I have all the up-to-date requirements:

Windows 10 64-bit

MS VS Community 2019

Git, CMake

I tested python requirements as per guide:

Python 3.7.2

64bit

pip 18.1 from C:\Users\jc321076\AppData\Local\Programs\Python\Python37\lib\site-packages\pip (python 3.7)

And I am using x64 Native Tools Command Prompt for VS 2019)

Thanks,

Tiria

[Laurent Perron]

pip install six

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[Tiria Andersen]

ahh, right. It worked, thanks :)