python - matplotlib error after installation

Question

An error occurs: {code...} The solution found on the Internet is to install the python3-tk package: However, this package cannot be found in the ubuntu17.04 I am using. Can you please provide a solution?

世界只因有你 · Answer

Change the update source and try again, switch to domestic Alibaba or other sources.

Command line: First backup sudo /etc/apt/sources.list /etc/apt/sources.list.bak
Then edit sudo gedit /etc/apt/sources.list
Put the following content in to replace the original source

deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##测试版源
deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# 源码
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##测试版源
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# Canonical 合作伙伴和附加
deb http://archive.canonical.com/ubuntu/ xenial partner
deb http://extras.ubuntu.com/ubuntu/ xenial main

save save
Command line: sudo apt-get update
sudo apt-get upgrade
sudo apt-get install python3-tk