Win10 環境に入っている Python.h を検索．
C:\Users\Iwao> where /R \ Python.h
C:\CocosCreator\resources\utils\Python27\include\Python.h
C:\Microsoft\AndroidNDK64\android-ndk-r15c\prebuilt\windows-x86_64\include\python2.7\Python.h
C:\Microsoft\AndroidNDK64\android-ndk-r16b\prebuilt\windows-x86_64\include\python2.7\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\Extensions\Microsoft\Python\Core\Packages\ptvsd\_vendored\pydevd\pydevd_attach_to_process\dll\python.h
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\Extensions\Microsoft\Python\Core\Packages\ptvsd\_vendored\pydevd\pydevd_attach_to_process\linux\python.h
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\Extensions\Microsoft\Python\Core\debugpy\_vendored\pydevd\pydevd_attach_to_process\common\python.h
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\Extensions\Microsoft\Python\Miniconda\Miniconda3-x64\include\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\include\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\pkgs\python-3.6.5-h0c2934d_0\include\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\include\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_86\include\Python.h
C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\include\Python.h
C:\ProgramData\Microsoft\AndroidNDK64\android-ndk-r11c\prebuilt\windows-x86_64\include\python2.7\Python.h
C:\salt\bin\include\Python.h
C:\Users\All Users\Microsoft\AndroidNDK64\android-ndk-r11c\prebuilt\windows-x86_64\include\python2.7\Python.h
C:\Users\Iwao\AppData\Local\Microsoft\Linux\HeaderCache\1.0\-1863842710\usr\include\python2.7\Python.h
C:\Users\Iwao\AppData\Local\Microsoft\Linux\HeaderCache\1.0\-1863842710\usr\include\python3.7\Python.h
C:\Users\Iwao\AppData\Local\Microsoft\Linux\HeaderCache\1.0\-1863842710\usr\include\python3.7m\Python.h
C:\Windows.old\Users\All Users\Microsoft\AndroidNDK64\android-ndk-r11c\prebuilt\windows-x86_64\include\python2.7\Python.h
C:\Users\Iwao>
