Dear sir/ madam, This is Frankie from Hong Kong. I am interested in Pypy for its high-speed processing. I am now using Python 3.6. I would like to install Pypy to my 64-bit Windows 10. First, I downloaded the zip file from - Windows binary (32bit) <https://bitbucket.org/pypy/pypy/downloads/pypy3-v6.0.0-win32.zip> *BETA* Second, I downloaded and installed Build Tools for Visual Studio 2017 and Team Explorer. Then, I ran: "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat" editbin /largeaddressaware "C:\Program Files\Python36\pypy3-v6.0.0-win32\pypy3.exe" So far so good. Then, I typed: "C:\Program Files\Python36\pypy3-v6.0.0-win32\bin\easy_install-3.5.exe" numpy "C:\Program Files\Python36\pypy3-v6.0.0-win32\bin\easy_install-3.5.exe" pandas In both cases, an error appeared: SystemError: Cannot compile 'Python.h'. Perhaps you need to install pypy-dev|pypy-devel. Can you please help? Thank you very much. Regards, Frankie