我正在尝试使用 安装 pip sudo apt install python-pip，但它好像存储库已死，因为我在“安装”过程中收到此消息：Réception de:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 gcc-7 amd64 7.3.0-27ubuntu1~18.04 [7 455 kB]
我已经运行sudo apt update但sudo apt upgrade没有成功。
这是我的 sources.list 文件：
deb http://archive.ubuntu.com/ubuntu/ bionic main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic universe
deb http://archive.ubuntu.com/ubuntu/ bionic-updates universe
deb http://archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse