下载 $ wget https://bootstrap.pypa.io/get-pip.py
$ wget https://bootstrap.pypa.io/get-pip.py
安装 $ python get-pip.py
$ python get-pip.py
查看版本 $ pip -V
$ pip -V
查看安装路径： find / -name pip
find / -name pip
软连接 ln -sv /usr/local/python/bin/pip /usr/bin/pip
ln -sv /usr/local/python/bin/pip /usr/bin/pip
全局安装： 一、python2的pip安装方法
sudo apt install python-pip 二、python3的pip安装方法
sudo apt install python-pip
sudo apt install python3-venv python3-pip
验证安装：
symo@symo:~$ which pip3 /usr/bin/pip3 symo@symo:~$ pip3 install inputs Requirement already satisfied: inputs in /usr/local/lib/python3.7/dist-packages (0.5)
