我在一台PC上安装了Ubuntu 20.04,然后尝试开始安装Python3的pip。然而,似乎什么都不起作用。 到目前为止,我尝试了以下方法:
sudo apt install python3-pip
这是我收到的错误信息:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python3-pip is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'python3-pip' has no installation candidate
我尝试了Carlos Sanchez JR提出的解决方案:如何在Ubuntu 20.04 Linux上安装Python包安装程序PIP 按照上面链接中给出的建议后,当我执行
sudo apt update
时,出现了以下错误:Ign:1 cdrom://Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423) focal InRelease
Hit:2 cdrom://Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423) focal Release
Hit:4 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:6 http://archive.ubuntu.com/ubuntu focal InRelease
Get:5 http://kali.download/kali kali-rolling InRelease [30.5 kB]
Hit:7 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Err:5 http://kali.download/kali kali-rolling InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
Get:8 http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease [30.5 kB]
Err:8 http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
Reading package lists... Done
W: GPG error: http://kali.download/kali kali-rolling InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
E: The repository 'http://http.kali.org/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED444FF07D8D0BF6
E: The repository 'http://kali.cs.nctu.edu.tw/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
现在尝试运行sudo apt install python3-pip
会得到和之前一样的错误信息E: Package 'python3-pip' has no installation candidate
。同样地,运行sudo apt-get install python3-pip
也是如此。
目前我还没有找到其他解决方案。