`python setup.py build_ext --inplace` errors on windows

[rolandrmgservices]

Describe the bug Calling python setup.py build_ext --inplace errors on windows.

To Reproduce Follow windows installation steps and then run the above command. It produces an infinite/recursive loop repeating the same error.

This was installed in a conda environment running within anaconda powershell prompt, where previously the install succeeded.

Expected behavior Success

Screenshots

Environment (please complete the following information):

• OS: [Windows]
• Python Version: [3.8]
• Versions of Major Dependencies (pandas, scikit-learn, cython): [e.g. pandas==0.25, scikit-learn==0.22, cython==0.28]

Additional context None

[barrybinshen]

Try changing "nthreads=0" in the setup function in the setup.py file. The reason for the error should be: the Linux system uses multiprocessing to load data, but it seems that this is not possible on Windows. So you can set "nthreads" to 0 to avoid enabling multiprocessing.