我的环境是Ubuntu18.10和python2.7。我想使用“点子”，但是我不能使用点子。我试过了我们该怎么办？
python -m pip install requets
/usr/bin/python: No module named pip
sudo apt-get purge -y python2.7-pip
[sudo] password for ubuntu:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package python2.7-pip
E: Couldn't find any package by glob 'python2.7-pip'
E: Couldn't find any package by regex 'python2.7-pip'
sudo apt-get install python2.7-pip
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package python2.7-pip
E: Couldn't find any package by glob 'python2.7-pip'
E: Couldn't find any package by regex 'python2.7-pip'