如何解决ifxpy库安装时出现的use_2to3无效错误？

安装ifxpy库时遇到以下错误，更新setuptools后问题仍未解决：

× Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [7 lines of output]
      <string>:175: SyntaxWarning: invalid escape sequence '\l'
      <string>:175: SyntaxWarning: invalid escape sequence '\l'
      Detected 64-bit Python
      Downloading : https://hcl-onedb.github.io/odbc/OneDB-Win64-ODBC-Driver.zip
      Extracting Windows ODBC files : https://hcl-onedb.github.io/odbc/OneDB-Win64-ODBC-Driver.zip
      Smart Triggers are enabled.
      error in IfxPy setup command: use_2to3 is invalid.
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

解决方案 #

• 降级setuptools版本：use_2to3参数在setuptools 60.0.0及以上版本被移除，先安装兼容版本再装ifxpy：

  pip install setuptools==59.6.0
  pip install ifxpy
  

• 直接安装预编译wheel包：跳过编译步骤，下载对应Python版本和系统架构的ifxpy wheel文件，执行安装命令：

  pip install IfxPy-<版本号>-cp<Python版本>-cp<Python版本>-<系统架构>.whl
  

• 手动配置ODBC驱动：先手动下载安装OneDB ODBC驱动，再执行ifxpy安装命令，避免安装脚本自动处理驱动时的异常。

内容的提问来源于stack exchange，提问作者Gustavo Rodrigues