http://mirrors.163.com/---国内网易开源镜像园
1.修改ubuntu18.04 apt源为阿里云(aliyun)镜像：
打开terminal,备份原文件：
sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
进入apt源配置目录：
cd /etc/apt/sources.list.d/
sudo vim aliyun.list
将以下内容复制到aliyun.list中：
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
在terminal中运行以下命令即完成：
sudo apt-get update
2.ubuntu18.04安装pip
安装python3的pip："apt-get install python3-pip" 安装完成后，命令行"pip3"检测安装成功
3.Ubuntu18.04安装Pycharm
方法一：下载Pycharm与安装
下载地址：https://www.jetbrains.com/pycharm/
Pycharm专业版和社区版对大多数人来说差别不大
我们下载Linux的社区版：
