On Fri, Sep 1, 2017 at 2:24 AM, Pavol Lisy <pavol.l...@gmail.com> wrote: > > I was trying to call sqrt using ctypes from msvcrt but I am not succesful: > > import ctypes > msc = ctypes.windll.msvcrt
msvcrt.dll is private to Windows components. It's not intended for applications. See my previous post in this thread for the correct shared library to load for Python 3.5+. Also, WinDLL (or windll) is for stdcall, whereas CRT functions use cdecl (CDLL or cdll). In 64-bit it isn't a problem since cdecl and stdcall are the same in x64, but this will fail in 32-bit x86. -- https://mail.python.org/mailman/listinfo/python-list