python3.5升級到36

1. 安裝python3.6
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:jonathonf/python-3.6
sudo apt-get update
sudo apt-get install python3.6
注：python3.6 - V 查看可以看到控制檯輸出python3.6的版本號
2. 刪除原有的pip
sudo apt-get remove python3-pip
sudo apt-get autoremove
3. 安裝pip並指向python3.6
sudo apt-get install python3-pip
python3.6 -m pip install --upgrade pip