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Editorial Team
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Asked: 2026-05-22T17:22:32+00:00

My end goal is to query NVAPI for gpu usage and other statistics in

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My end goal is to query NVAPI for gpu usage and other statistics in python. See http://developer.nvidia.com/nvapi

from ctypes import WinDLL
nvapi = WinDLL("nvapi.dll")
print nvapi# <WinDLL 'nvapi.dll', handle 718a0000 at 27c0050>
print nvapi.nvapi_QueryInterface# <_FuncPtr object at 0x026D8E40>
print nvapi.nvapi_QueryInterface()# returns 0
print nvapi.NvAPI_Initialize# AttributeError: function 'NvAPI_Initialize' not found
print nvapi.NvAPI_SYS_GetChipSetInfo# AttributeError: function 'NvAPI_SYS_GetChipSetInfo' not found

Here is a copy of the header file available for download from the link above: http://paste.pound-python.org/show/7337/

At this point, I am just trying to familiarize myself with the api… so what am I doing wrong? I can’t figure out how to call any of the functions listed in the header file.

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1 Answer

  1. Editorial Team

    Taken from your comment:

    NvAPI_Initialize call still fails.
    saying the function is not found.

    NvAPI_Initialize is not exported from the dynamic library nvapi.dll. It is a symbol contained in nvapi.lib, the static library shipped with the NVIDIA SDK, thus it’s no wonder you are unable to call it using Python.

    Honestly, the easiest route here is to create a small wrapper DLL in C, statically linking to nvapi.lib and exposing a friendly interface to Python.

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