Installation of CoolProp with Python 3.8

[Rajendar Mallepally]

Hello CoolProp Users,

I am new to this group and trying to install CoolProp. I have Windows 10 Enterprise (64 bit) on my machine. I installed python 3.8 and tried to install CoolProp via "pip install CoolProp" and getting an error message "saying Microsoft C++ 14.0 is required and wonder whether it is really needed for CoolProp? I appreciate any kind of help in this issue.

Thanks,

Raj

Please see the error message:

C:\Users\XXX\Documents\Python> py -m pip install CoolProp

Collecting CoolProp

  Downloading https://files.pythonhosted.org/packages/54/e8/6a08f5cce151c034d3c5950b5daeb35303a13cc8127c40c5f12ed38801bf/CoolProp-6.3.0.tar.gz (12.8MB)

     |████████████████████████████████| 12.8MB 242kB/s

Installing collected packages: CoolProp

    Running setup.py install for CoolProp ... error

    ERROR: Command errored out with exit status 1:

 

    Complete output (44 lines):

    Cython will not be used; cy_ext is cpp

    running install

    running build

    running build_py

    creating build

    creating build\lib.win-amd64-3.8

    creating build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\BibtexParser.py -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\constants.py -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\HumidAirProp.py -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\State.py -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\__init__.py -> build\lib.win-amd64-3.8\CoolProp

    creating build\lib.win-amd64-3.8\CoolProp\GUI

    copying CoolProp\GUI\CoolPropGUI.py -> build\lib.win-amd64-3.8\CoolProp\GUI

    copying CoolProp\GUI\PsychScript.py -> build\lib.win-amd64-3.8\CoolProp\GUI

    copying CoolProp\GUI\__init__.py -> build\lib.win-amd64-3.8\CoolProp\GUI

    creating build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\Common.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\ConsistencyPlots.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\Plots.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\psy.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\PsychChart.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\PsychScript.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\SimpleCycles.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\SimpleCyclesCompression.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\SimpleCyclesExpansion.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\Tests.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    copying CoolProp\Plots\__init__.py -> build\lib.win-amd64-3.8\CoolProp\Plots

    creating build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\tests\runner.py -> build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\tests\test_CoolPropState.py -> build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\tests\test_plots.py -> build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\tests\test_Props.py -> build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\tests\__init__.py -> build\lib.win-amd64-3.8\CoolProp\tests

    copying CoolProp\AbstractState.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\cAbstractState.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\constants_header.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\CoolProp.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\State.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\typedefs.pxd -> build\lib.win-amd64-3.8\CoolProp

    copying CoolProp\Plots\psyrc -> build\lib.win-amd64-3.8\CoolProp\Plots

    running build_ext

    building 'CoolProp.CoolProp' extension

    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/

    ----------------------------------------

[Ian Bell]

I did some work to get python 3.8 stuff working, but I want a bit more testing before we push the code.

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[Matthis Thorade]

pip is looking for the files here:

https://pypi.org/project/CoolProp/#files

As you see, there are no precompiled binaries for python 3.8, so pip instead downloads the Source release, and tries to build the binary itself. Compiling the binary should be done with the same compiler that was used to compile the python binaries, you can see the corrsponding versions here:

https://wiki.python.org/moin/WindowsCompilers

You could just install the matching compiler and see if pip succeeds, or you wait until the changes that Ian mentioned are uploaded and tested.

[Ian Bell]

For now I would recommend you use Python 3.7, the wheels are available for 3.7, and will be soon available for 3.8

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