选择python3环境后保存，右下角出现“Linter pylint is not installed ”提示，点击install后出现There is no Pip installer available in the selected environment.
由于linux系统自带python2.7，所以需要手动安装python3。安装完成后还需要安装python3的pip包，命令如下：
sudo apt install python3-pip