bash: pip: command not found.

curl https://bootstrap.pypa.io/get-pip.py > get.pip.py

如出现如下报错可根据提升更换下载链接：This script dose not work on Python2.7 The minimum supported Python version id 3.7. Please use https://bootstrap.pypa.io/pip/2.7/get-pip.py instead

curl https://bootstrap.pypa.io/pip/2.7/get-pip.py > get.pip.py
sudo python get-pip.py
sudo easy_install pip

设置系统默认Python版本为Python3.x

# 查看Python的软连接指向
ls -l /usr/bin/ | grep python
# 删除指向Python2的软链接
sudo rm -rf /usr/bin/python 
# 创建新的软连接 
sudo ln -s /usr/bin/python3.6 /usr/bin/python