Pythonnet does not install on Python 3.10

Environment

• Pythonnet version: 2.5.2
• Python version: 3.10
• Operating System: Windows 10
• .NET Runtime: 5.0.10

Details

• I was installing Pythonnet on Python 3.10

  TODO

• What commands did you run to trigger this issue? If you can provide a Minimal, Complete, and Verifiable example this will help us understand the issue.

    pip install pythonnet

• If there was a crash, please include the traceback here.

Collecting pythonnet
  Using cached pythonnet-2.5.2.tar.gz (1.9 MB)
  Preparing metadata (setup.py) ... done
Requirement already satisfied: pycparser in c:\users\hp\appdata\local\programs\python\python310\lib\site-packages (from pythonnet) (2.20)
Building wheels for collected packages: pythonnet
  Building wheel for pythonnet (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Users\hp\AppData\Local\Programs\Python\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"'; __file__='"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\hp\AppData\Local\Temp\pip-wheel-bjzwvfmb'
       cwd: C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\
  Complete output (89 lines):
  running bdist_wheel
  running build
  running build_ext
  Checking for updates from https://www.nuget.org/api/v2/.
  Currently running NuGet.exe 4.1.0.
  Updating NuGet.exe to 5.11.0.
  Update successful.
  Cannot find the specified version of msbuild: '14'
  MSBuild auto-detection: using msbuild version '17.0.0.48003' from 'C:\Program Files\Microsoft Visual Studio\2022\Preview\MSBuild\Current\bin'.
  Restoring NuGet package System.ValueTuple.4.5.0.
  Restoring NuGet package NUnit.3.12.0.
  Restoring NuGet package UnmanagedExports.1.2.7.
  Restoring NuGet package NUnit.ConsoleRunner.3.11.1.
  Adding package 'NUnit.ConsoleRunner.3.11.1' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Adding package 'System.ValueTuple.4.5.0' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Adding package 'NUnit.3.12.0' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Adding package 'UnmanagedExports.1.2.7' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Added package 'UnmanagedExports.1.2.7' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Added package 'NUnit.ConsoleRunner.3.11.1' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Added package 'System.ValueTuple.4.5.0' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'
  Added package 'NUnit.3.12.0' to folder 'C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\packages'

  NuGet Config files used:
      C:\Users\hp\AppData\Roaming\NuGet\NuGet.Config
      C:\Program Files (x86)\NuGet\Config\Microsoft.VisualStudio.FallbackLocation.config
      C:\Program Files (x86)\NuGet\Config\Microsoft.VisualStudio.Offline.config

  Feeds used:
      C:\Users\hp\.nuget\packages\
      https://api.nuget.org/v3/index.json
      C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\

  Installed:
      4 package(s) to packages.config projects
  Traceback (most recent call last):
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\tools\geninterop\geninterop.py", line 396, in <module>
      sys.exit(main())
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\tools\geninterop\geninterop.py", line 357, in main
      python_h = preprocess_python_headers()
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\tools\geninterop\geninterop.py", line 238, in preprocess_python_headers
      for line in _check_output(cmd).splitlines():
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\tools\geninterop\geninterop.py", line 46, in _check_output
      output = subprocess.check_output(*args, **kwargs)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 420, in check_output
      return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 501, in run
      with Popen(*popenargs, **kwargs) as process:
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__
      self._execute_child(args, executable, preexec_fn, close_fds,
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child
      hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
  FileNotFoundError: [WinError 2] The system cannot find the file specified
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\setup.py", line 630, in <module>
      setup(
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\site-packages\setuptools\__init__.py", line 153, in setup
      return distutils.core.setup(**attrs)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\core.py", line 148, in setup
      dist.run_commands()
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\dist.py", line 966, in run_commands
      self.run_command(cmd)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\setup.py", line 612, in run
      return bdist_wheel.bdist_wheel.run(self)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\site-packages\wheel\bdist_wheel.py", line 299, in run
      self.run_command('build')
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\cmd.py", line 313, in run_command
      self.distribution.run_command(command)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\command\build.py", line 135, in run
      self.run_command(cmd_name)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\cmd.py", line 313, in run_command
      self.distribution.run_command(command)
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\command\build_ext.py", line 340, in run
      self.build_extensions()
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\command\build_ext.py", line 449, in build_extensions
      self._build_extensions_serial()
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\distutils\command\build_ext.py", line 474, in _build_extensions_serial
      self.build_extension(ext)
    File "C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\setup.py", line 302, in build_extension
      subprocess.check_call([sys.executable, geninterop, interop_file])
    File "C:\Users\hp\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 369, in check_call
      raise CalledProcessError(retcode, cmd)
  subprocess.CalledProcessError: Command '['C:\\Users\\hp\\AppData\\Local\\Programs\\Python\\Python310\\python.exe', 'tools\\geninterop\\geninterop.py', 'src\\runtime\\interop310.cs']' returned non-zero exit status 1.
  ----------------------------------------
  ERROR: Failed building wheel for pythonnet
  Running setup.py clean for pythonnet
Failed to build pythonnet
Installing collected packages: pythonnet
    Running setup.py install for pythonnet ... error
    ERROR: Command errored out with exit status 1:
     command: 'C:\Users\hp\AppData\Local\Programs\Python\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"'; __file__='"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\hp\AppData\Local\Temp\pip-record-dw8k9clf\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\hp\AppData\Local\Programs\Python\Python310\Include\pythonnet'
         cwd: C:\Users\hp\AppData\Local\Temp\pip-install-1b930_7c\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\
    Complete output (6 lines):
    usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: setup.py --help [cmd1 cmd2 ...]
       or: setup.py --help-commands
       or: setup.py cmd --help

    error: option --single-version-externally-managed not recognized
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\hp\AppData\Local\Programs\Python\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"'; __file__='"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-1b930_7c\\pythonnet_09b2e5274ca748a4ba7d12bca0b70752\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\hp\AppData\Local\Temp\pip-record-dw8k9clf\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\hp\AppData\Local\Programs\Python\Python310\Include\pythonnet' Check the logs for full command output.

I am able to install Pythonnet on Python 3.9 but not on Python 3.10 I am aware that only Python 2.7 and 3.5-3.8 are tested but just bringing this issue to your knowledge.

[suryapradhan123]

Is there an official date for the release of a new version supporting Py3.10?

[filmor]

It has been merged into master. We will not backport support for 3.10 (or 3.9) back to the current stable version. You can install the prerelease using pip install --pre pythonnet.