点更新，但安装了旧版本

Question

$ pip install -U pip
Collecting pip
  Using cached pip-9.0.1-py2.py3-none-any.whl
Installing collected packages: pip
Successfully installed pip-8.1.1
You are using pip version 8.1.1, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

The problem is pretty self-explanatory.

I tell pip to update itself, it gets the 9.0.1 package, installs 8.1.1 somehow then tells me to run the command i just ran to update it.

Answer 1

I managed to fix it by installing pip trough the script given at the website(apt-get installs version 8.1.1): https://bootstrap.pypa.io/get-pip.py

It automatically uninstalled the old version so everything is in order now.