ubuntu显示标题所示报错，首先需要更新：
sudo apt-get update
sudo apt-get upgrade
sudo apt install python3-pip
参考资料：https://blog.csdn.net/wangcassy/article/details/124313584
标签：installation,candidate,no,sudo,apt,pip,python3 From： https://www.cnblogs.com/tiansz/p/17191270.html