在ubuntu 17.04 Zesty Zapus上运行sudo apt-get update时，我收到以下错误。我发布了错误行。我想安装像matplotlib和tkinter这样的python库，因为上面的命令没有成功运行，因此无法安装。请建议我做什么。
Err:9 http://security.ubuntu.com/ubuntu zesty-security/main amd64 Packages
404 Not Found [IP: 2001:67c:1560:8001::14 80]
Err:25 http://in.archive.ubuntu.com/ubuntu zesty/main i386 Packages
404 Not Found [IP: 2001:67c:1360:8001::21 80]
Err:81 http://in.archive.ubuntu.com/ubuntu zesty-updates/main amd64 Packages
404 Not Found [IP: 2001:67c:1360:8001::21 80]
Err:113 http://in.archive.ubuntu.com/ubuntu zesty-backports/main amd64 Packages
404 Not Found [IP: 2001:67c:1360:8001::21 80]
Reading package lists... Done
W: The repository 'http://security.ubuntu.com/ubuntu zesty-security Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://in.archive.ubuntu.com/ubuntu zesty Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://in.archive.ubuntu.com/ubuntu zesty-updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://in.archive.ubuntu.com/ubuntu zesty-backports Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/zesty-security/main/binary-amd64/Packages 404 Not Found [IP: 2001:67c:1560:8001::14 80]
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/zesty/main/binary-i386/Packages 404 Not Found [IP: 2001:67c:1360:8001::21 80]
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/zesty-updates/main/binary-amd64/Packages 404 Not Found [IP: 2001:67c:1360:8001::21 80]
E: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/zesty-backports/main/binary-amd64/Packages 404 Not Found [IP: 2001:67c:1360:8001::21 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
你可以通过以下方式解决它：只需用old-releases.ubuntu.com替换/etc/apt/sources.list中的us.archive.ubuntu.com和security.ubuntu.com，然后你就可以完成更新了。
它对我有用
就我而言：
sed -e 's/archive.ubuntu.com/old-releases.ubuntu.com/g' -i /etc/apt/sources.list
sed -e 's/security.ubuntu.com/old-releases.ubuntu.com/g' -i /etc/apt/sources.list
就我而言，我可以通过执行以下操作来下载一些软件包：
我不得不在/etc/apt/sources.list中用“old-releases.ubuntu.com”替换“us.archive.ubuntu.com”和“security.ubuntu.com”然后我就能完成下载一些像Ayush Kumar这样的包裹说。
对于我的托管公司Linode列出的其他更新，我使用了以下内容：
我不得不使用--allow-unauthenticated标志与sudo apt-get update。
sudo apt-get update --allow-unauthenticated
然后我就能完成更新。
17.04没有得到Ubuntu的进一步支持。因此，对我有用的解决方案是将其升级到17.10，因为没有其他解决方案有帮助。