python：launchpadlib 1.10.13 requires testresources, which is not installed

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本文介绍了在Ubuntu 20.04环境下使用`sudo pip3 install setuptools`时遇到的依赖冲突问题，通过安装launchpadlib并重新安装setuptools的方法，解决了这个问题。建议使用虚拟环境以避免权限和系统包管理器冲突。

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问题

在ubuntu20.04上执行如下命令，报错

root@ubuntu:/home/vpp# sudo pip3 install setuptools
Collecting setuptools
Using cached setuptools-62.3.2-py3-none-any.whl (1.2 MB)
Installing collected packages: setuptools
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
launchpadlib 1.10.13 requires testresources, which is not installed.
Successfully installed setuptools-62.3.2
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv