@m_adam yes it solves the pb.
Thanks Maxime

thanks for the answer Maxim from Maxon

I was following this url from Niklas, but I guessed it was a bit old

Also it is important to add to the env path this directory :
C:\Program Files\MAXON\Cinema 4D R20\resource\modules\python\libs\win64\python27.vs2008.framework\Scripts
which is the place where the get-pip.py have installed the new exec.

It has perfectly installed numpy-1.16.2

Question : do we need absolutely c4dpy.exe ? (as I managed to run during my previous test with the python.exe)

Hello Guys

Here are the only official doc I have found regarding this point :

If you import a python module with compiled binaries (e.g. numpy) you should ensure, the compiled binaries are compiled with the same toolset/version than Cinema 4D Python interpreter. See Version.
Windows: Python version 2.7.14 (default, May 3 2018, 18:05:57) Build with MSC v.1500 64 bit (AMD64) (Microsoft Visual Studio 2008)

My question is : What file should I add to this directory : C:\Users\fransua\AppData\Roaming\MAXON\Cinema 4D R20_4FA5020E\python27\libs

ogg, whl ? Because in Maya I was able to install whl files with a pip modified version, but right now I am a bit confused about the process.

Any help ?

Hello Guys
Like here : [http://www.digitalsandwich.net/portfolio/python-in-c4d-type-name-and-id-list/](link url)
But a text version would be more suitable. I can't find something similar in the online sdk.
Thanks for the help
Fransua