1.添加python3.6安装包,并且安装
sudo apt-get install software-properties-common
2.下载python3.6
sudo add-apt-repository ppa:jonathonf/python-3.6 sudo apt-get update sudo apt-get install python3.6
2.修改系统默认python版本为3.6，并更新
cd /user/bin
rm python
ln -s python3.6m python
python pip install --upgrade pip
