我想安装 python3-pip 但总是出现错误：
sudo apt-get install python3-pip
The following packages have unmet dependencies:
python3-pip : Depends: python3-setuptools but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
sudo apt-get install python-setuptools
The following packages have unmet dependencies:
python3-setuptools : Depends: python3-pkg-resources (= 5.5.1-1) but 33.1.1-1~bpo8+1 is to be installed
E: Unable to correct problems, you have held broken packages.
sudo apt-get install python3-pkg-resources
Reading package lists... Done
Building dependency tree
Reading state information... Done
python3-pkg-resources is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
我已经更新/升级了，但仍然不起作用
答案1
已从python3-pkg-resourcesjessie-backports 中删除。
sudo apt purge python3-pkg-resources
它将main作为依赖项从存储库安装。
sudo apt install python3-pip
答案2
你可以尝试
sudo apt-get install python3-pkg-resourcessudo apt-get install -f python3-pip
也许这就是解决方案，但我真的不确定。
答案3
对于那些在对 Python3 进行了一些邪恶的（对于 Debian）删除（并且没有正确使用 apt-get remove python3）之后仍然坚持重新安装 Python3 的人，我提供了这个 100% 恢复步骤。