如何修复pythonnet安装过程中的错误

Question

当我尝试使用以下命令时：

pip install pythonnet

我看到错误，您可以在下面看到：

Collecting pythonnet
  Using cached pythonnet-2.5.2.tar.gz (1.9 MB)
Requirement already satisfied: pycparser in c:\users\d4wt0\appdata\local\packages\pythonsoftwarefoundation.python.3.9_qbz5n2kfra8p0\localcache\local-packages\python39\site-packages (from pythonnet) (2.20)
Using legacy 'setup.py install' for pythonnet, since package 'wheel' is not installed.
Installing collected packages: pythonnet
    Running setup.py install for pythonnet ... error
    ERROR: Command errored out with exit status 1:
     command: 'C:\Users\d4wt0\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\d4wt0\AppData\Local\Temp\pip-install-jlv07504\pythonnet_0928bad80975481c9950abc5017a28b4\setup.py'"'"'; __file__='"'"'C:\Users\d4wt0\AppData\Local\Temp\pip-install-jlv07504\pythonnet_0928bad80975481c9950abc5017a28b4\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\d4wt0\AppData\Local\Temp\pip-record-x2n0fvt3\install-record.txt' --single-version-externally-managed --user --prefix= --compile --install-headers 'C:\Users\d4wt0\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\Include\pythonnet'
         cwd: C:\Users\d4wt0\AppData\Local\Temp\pip-install-jlv07504\pythonnet_0928bad80975481c9950abc5017a28b4\
    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\d4wt0\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\d4wt0\AppData\Local\Temp\pip-install-jlv07504\pythonnet_0928bad80975481c9950abc5017a28b4\setup.py'"'"'; __file__='"'"'C:\Users\d4wt0\AppData\Local\Temp\pip-install-jlv07504\pythonnet_0928bad80975481c9950abc5017a28b4\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\d4wt0\AppData\Local\Temp\pip-record-x2n0fvt3\install-record.txt' --single-version-externally-managed --user --prefix= --compile --install-headers 'C:\Users\d4wt0\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\Include\pythonnet' Check the logs for full command output.

我该如何解决？我尝试使用 PyCharm 安装该软件包，但出现了同样的错误。有什么想法吗？

Answer 1

从 Python.NET docs 可以看出它不支持 python 3.9。您可以从下载车轮文件 here.

由于您的 python 版本是 3.9，请下载 pythonnet‑2.5.2‑cp39‑cp39‑win32.whl（对于 32 位 python 版本）或 pythonnet‑2.5.2‑cp39‑cp39‑win_amd64.whl（对于 64 位 python版本）。

然后指定 wheel 文件的完整路径进行安装。

示例：

pip install C:\Users\User\Downloads\pythonnet‑2.5.2‑cp39‑cp39‑win_amd64.whl

Answer 2

当前预发布版本支持Python 3.9。它可以使用 pip 安装：

pip install --pre pythonnet

（此回答来自https://github.com/pythonnet/pythonnet/issues/1262。）

如何修复pythonnet安装过程中的错误

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