PyCall::PythonNotFound with usage example about pycall.rb HOT 4 CLOSED

Show your code as is.

And, to investigate the reason why pycall cannot find python, show the value of the environment variable PATH, and try the same code with the environment variable PYCALL_DEBUG_FIND_LIBPYTHON=1.

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I got the same error without adding PATH setting for Python environment.

ex.
set PATH=C:\Anaconda3;C:\Anaconda3\Library\mingw-w64\bin;C:\Anaconda3\Library\usr\bin;C:\Anaconda3\Library\bin;C:\Anaconda3\Scripts;%PATH%

If you use RubyInstaller2, you also need to set RUBY_DLL_PATH environment variable.
Without RUBY_DLL_PATH setting, I got 'DLL load failed' ... (PyCall::PyError) when I use scikit-learn, etc.

ex.
set RUBY_DLL_PATH=%PATH%

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@avigard Please re-open if you want to continue this issue.

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With: PYCALL_DEBUG_FIND_LIBPYTHON=1

Fast Debugger (ruby-debug-ide 0.7.0.beta6, debase 0.2.3.beta2, file filtering is supported) listens on 0.0.0.0:57273
DEBUG(find_libpython) find_libpython(nil)
DEBUG(find_libpython) investigate_python_config("python")
DEBUG(find_libpython) libs: ["python37", "python"]
DEBUG(find_libpython) libpaths: ["C:\Users\774782\AppData\Local\Programs\Python\Python37-32", "C:\Users\774782\AppData\Local\Programs\Python\Python37-32", "C:\Users\774782\AppData\Local\Programs\Python\Python37-32/lib"]
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python37
DEBUG(find_libpython) Fiddle::DLError: Exec format error
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python37
DEBUG(find_libpython) Fiddle::DLError: Exec format error
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/lib/python37
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/lib/python37.dll
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python.dll
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/python.dll
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/lib/python
DEBUG(find_libpython) Unable to find C:\Users\774782\AppData\Local\Programs\Python\Python37-32/lib/python.dll
DEBUG(find_libpython) Fiddle::DLError: Exec format error
DEBUG(find_libpython) Fiddle::DLError: No such file or directory
Uncaught exception: PyCall::PythonNotFound

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