Ubuntu 18.04安裝python2.7和python3.6共存

安裝python2.7

sudo apt install python2.7
           

安裝pip和pip3

sudo apt install python-pip
sudo apt install python3-pip
           

檢視python版本和pip版本

python -V
pip -V
           

檢視python路徑和pip路徑

whereis python
whereis pip
           

設定清華源

mkdir .pip && cd .pip && touch pip.conf && gedit pip.conf
           

pip.conf

[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
           

更新pip到對新版本

python -m pip install --upgrade pip