如何在 Windows 上安装 pyodbc 以便与 Python 3.8 一起使用？

Question

我在安装 pyodbc 时遇到错误，我正在研究这个问题，也许是 c++ 重新分发安装问题，但即使使用 c++ 重新分发安装也更新了问题 oc

尝试安装 pyodbc 时出现以下错误

C:\Users\MacInBox>pip install pyodbc
Collecting pyodbc
  Using cached https://files.pythonhosted.org/packages/75/29/aa190749bac37ede0f11a68a75e7055254699c11572bd94213f1163dfd8f/pyodbc-4.0.27.tar.gz
Installing collected packages: pyodbc
    Running setup.py install for pyodbc ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\macinbox\appdata\local\programs\python\python38-32\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\setup.py'"'"'; __file__='"'"'C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MacInBox\AppData\Local\Temp\pip-record-fzctfb9u\install-record.txt' --single-version-externally-managed --compile
         cwd: C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\
    Complete output (12 lines):
    running install
    running build
    running build_ext
    building 'pyodbc' extension
    creating build
    creating build\temp.win32-3.8
    creating build\temp.win32-3.8\Release
    creating build\temp.win32-3.8\Release\src
    C:\Program Files (x86)\Microsoft Visual Studio19\Community\VC\Tools\MSVC.23.28105\bin\HostX86\x86\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYODBC_VERSION=4.0.27 -Ic:\users\macinbox\appdata\local\programs\python\python38-32\include -Ic:\users\macinbox\appdata\local\programs\python\python38-32\include "-IC:\Program Files (x86)\Microsoft Visual Studio19\Community\VC\Tools\MSVC.23.28105\include" /EHsc /Tpsrc\buffer.cpp /Fobuild\temp.win32-3.8\Release\src\buffer.obj /Wall /wd4514 /wd4820 /wd4668 /wd4711 /wd4100 /wd4127 /wd4191
    buffer.cpp
    C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\src\pyodbc.h(19): fatal error C1083: NÆo ‚ poss¡vel abrir arquivo incluir: 'windows.h': No such file or directory
    error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.23.28105\bin\HostX86\x86\cl.exe' failed with exit status 2
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\macinbox\appdata\local\programs\python\python38-32\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\setup.py'"'"'; __file__='"'"'C:\Users\MacInBox\AppData\Local\Temp\pip-install-ysm4ul3_\pyodbc\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MacInBox\AppData\Local\Temp\pip-record-fzctfb9u\install-record.txt' --single-version-externally-managed --compile Check the logs for full command output.

这是我的电脑上安装的 c++ reditribute

Answer 1

目前，PiPI (pyodbc 4.0.27) 上的 pyodbc 没有 Python 3.8 的 wheel 文件，因此当您这样做时 pip install pyodbc pip 将尝试从源代码构建 pyodbc。你不需要 C++ redistributables，你需要一个 C++ compiler.

pyodbc 的下一个版本几乎肯定会有 Python 3.8 的预编译 wheel 文件。同时，您可以从

下载所需的 wheel 文件

https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyodbc

然后用

安装

pip install C:\path\to\pyodbc-4.0.27-cp38-cp38-win32.whl

2020-06-30 更新： 当前版本的 pyodbc 现在有 Python 3.8 的轮子。