linux环境安装pip
1、适用于python2.7+
yum install -y python-devel krb5-devel \ && curl https://bootstrap.pypa.io/pip/2.7/get-pip.py -o get-pip.py \ && python get-pip.py
2、适用于python3
yum install -y python-devel krb5-devel \ && curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \ && python get-pip.py