Installation and deployment python

installation

• Set python3, pip3 the default version

# python3优先级比2高，所以默认为3
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
# 选择默认python版本
sudo update-alternatives --config python

# 安装pip3
sudo apt-get install python3-pip
# 使用pip时报错ImportError: No module named 'pip._internal'解决方案
wget https://bootstrap.pypa.io/get-pip.py  --no-check-certificate
sudo python3 get-pip.py --force-reinstall

deploy