1.pycharm下载安装
1. 下载
下图，选择平台为Linux，可以看到当前版本为2018.3，这里分为Professional专业版和Community社区版，区别是专业版是收费，功能比社区版要强大的多。别急，后面会有免费激活教程。
图1.1：pycharm官方下载界面
2. 安装
下载完成后，安装包在Downloads文件夹下
右键安装包，点击“Extract Here”意思是提取到这里，相当于解压
提取完成后，会生成一个pycharm-2018.3的文件夹
在终端指定到pycharm-2018.3/bin目录下
cd /home/joyitsai/Downloads/pycharm-2018.3/bin
- bin目录下有一个pycharm.sh执行脚本程序，执行sh命令，开始安装pycharm：
sh pycharm.sh
- 回车后，等待安装，安装成功时出现Complete Installation弹框，如果需要导入之前安装版本的配置的话，就选第一个，没有就选第二个。
2. pycharm2018.3激活
1. 修改hosts文件：
添加下面一行到hosts文件，目的是屏蔽掉Pycharm对激活码的验证
0.0.0.0 account.jetbrains.com
- windwos系统hosts文件路径为：C:\Windows\System32\drivers\etc
如果遇到权限问题，可将hosts文件先复制出来修改后再覆盖原来的即可。 - Linux和mac的hosts文件路径为：/etc
在命令行输入
cd /etc
sudo vim hosts
修改后的hosts文件如下：
图2.1：/etc/hosts文件内容
- 保存退出
2. 打开PyCharm，选择Activate code（用激活码激活）
打开Pycharm与安装Pycharm用同一个命令，bin目录下有一个pycharm.sh执行脚本程序，执行sh命令
sh pycharm.sh
打开后，可以将Pycharm固定到桌面，后面开发过程中打开就方便了。
3. 复制下载激活码，填入激活码框。
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复制上面的激活码，填入激活码框，点击 OK 进行认证。目前这个激活码有效期至2019年7月30日。
图2.2：pycharm about
4. 如果出现以下弹框，这说明你没有修改hosts文件，或说没生效
这里写图片描述
