没有 setup.py 文件时如何`pip install -e`？答案

【问题标题】：How to `pip install -e` when there is no setup.py file?没有 setup.py 文件时如何`pip install -e`？
【发布时间】：2022-01-25 11:51:30
【问题描述】：

我刚刚 fork minimalmodbus 来定制一些东西。通常我对自己的包所做的就是使用pip install -e bla 安装它们，这样我就可以生动地更改代码。我试图用这个叉子以这种方式进行，但我得到了

ERROR: File "setup.py" not found. Directory cannot be installed in editable mode: /home/me/code/repos/minimalmodbus
(A "pyproject.toml" file was found, but editable mode currently requires a setup.py based build.)

在这种情况下该怎么做？一种可能性是更改代码，然后重新安装包、测试、重新安装、测试等。但这很乏味，我认为开发人员不会以这种方式工作，每次他们想测试一行代码时都重新安装包。

我尝试了this 但不起作用，我收到错误

$ pip3 install -e repos/minimalmodbus/
Obtaining file:///home/tct/code/repos/minimalmodbus
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Requirement already satisfied: pyserial>=3.0 in /home/tct/.local/lib/python3.8/site-packages (from minimalmodbus==2.0.1) (3.5)
Installing collected packages: minimalmodbus
  Running setup.py develop for minimalmodbus
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/home/tct/code/repos/minimalmodbus/setup.py'"'"'; __file__='"'"'/home/tct/code/repos/minimalmodbus/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' develop --no-deps --user --prefix=
         cwd: /home/tct/code/repos/minimalmodbus/
    Complete output (22 lines):
    running develop
    /tmp/pip-build-env-zcfd8ndi/overlay/lib/python3.8/site-packages/setuptools/command/easy_install.py:156: EasyInstallDeprecationWarning: easy_install command is deprecated. Use build and pip and other standards-based tools.
      warnings.warn(
    WARNING: The user site-packages directory is disabled.
    /tmp/pip-build-env-zcfd8ndi/overlay/lib/python3.8/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
      warnings.warn(
    error: can't create or remove files in install directory
    
    The following error occurred while trying to add or remove files in the
    installation directory:
    
        [Errno 13] Permission denied: '/usr/lib/python3.8/site-packages'
    
    The installation directory you specified (via --install-dir, --prefix, or
    the distutils default setting) was:
    
        /usr/lib/python3.8/site-packages/
    
    This directory does not currently exist.  Please create it and try again, or
    choose a different installation directory (using the -d or --install-dir
    option).
    
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/home/tct/code/repos/minimalmodbus/setup.py'"'"'; __file__='"'"'/home/tct/code/repos/minimalmodbus/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' develop --no-deps --user --prefix= Check the logs for full command output.

如果我这样做pip3 install，它会完美运行。现在我正在使用蛮力pip3 install --upgrade --force-reinstall repos/minimalmodbus/; python3 my_code.py。

【问题讨论】：

标签： python pip

【解决方案1】：

尝试重新安装python3。

sudo apt install python3

【讨论】：

? ...这应该有什么帮助？