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The module has no attribute 'TCP_KEEPIDLE'#2606

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wumin199 asked this question inQ&A
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my environment:

  • python 3.13
  • .net: 8
  • win 10

my c# test code is:

            using (Py.GIL())            {                dynamic socket = Py.Import("socket");                Console.WriteLine($"socket.SO_KEEPALIVE: {socket.SO_KEEPALIVE}"); // 8                try                {                    var tcp_keepidle = socket.TCP_KEEPIDLE;                }                catch (Exception e)                {                    Console.WriteLine($"socket.TCP_KEEPIDLE error: {e.Message}");                }            }

My question is why it raise exception in var tcp_keepidle = socket.TCP_KEEPIDLE, which shows errorsocket.TCP_KEEPIDLE error: The module has no attribute 'TCP_KEEPIDLE'.

but if I test in ipython, there is no error here in getting socket.TCP_KEEPIDLE.

ipython:

import socket socket.__dir__()

it has attributes

'TCP_KEEPIDLE',
'TCP_KEEPINTVL',
'TCP_KEEPCNT',

but these attributes lost in C# environtment:

                dynamic socket = Py.Import("socket");                dynamic dir_result = socket.__dir__();                string[] dir_result_list = dir_result.As<string[]>();

Also I testsocket.__file__ in ipython and C# , they both point to same socket.py

my python environment setting is

            string py_path = Path.Combine(XSPkgPythonPath) + Path.PathSeparator.ToString();  // my local python packages            py_path += Path.Combine(PythonEmbededPath, "DLLs") + Path.PathSeparator.ToString();            py_path += Path.Combine(PythonEmbededPath, "Lib") + Path.PathSeparator.ToString();            py_path += PythonEmbededPath + Path.PathSeparator.ToString();            py_path += Path.Combine(PythonEmbededPath, "Lib", "site-packages") + Path.PathSeparator.ToString();            py_path += Path.Combine(PythonEmbededPath, "Lib", "site-packages", "win32") + Path.PathSeparator.ToString();            py_path += Path.Combine(PythonEmbededPath, "Lib", "site-packages", "win32", "lib") + Path.PathSeparator.ToString();            py_path += Path.Combine(PythonEmbededPath, "Lib", "site-packages", "pythonwin");           Runtime.PythonDLL = Path.Combine(PythonEmbededPath, "python313.dll");           PythonEngine.PythonHome = PythonEmbededPath;             PythonEngine.PythonPath = py_path;           PthonEngine.Initialize();           PythonEngine.BeginAllowThreads();
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Replies: 1 comment 1 reply

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Are you sure that you are using the exact same Python for this check? According to the docs, Win 10 1709 is required for the flag.

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1 reply
@wumin199
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I‘m sure python is the same for this test, As I only have only one python environment in my computer

And my win 10 version is newer than Win 10 1709
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@wumin199@filmor
Converted from issue

This discussion was converted from issue#2605 on July 20, 2025 09:41.

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