Cheng's Blog

After updating pip using pip install -U pip,

$ pip
/usr/bin/pip: No such file or directory

pip can no longer be found:

$ which pip
/usr/local/bin/pip

$ pip
-su: /usr/bin/pip: No such file or directory

$ type pip
pip is hashed (/usr/bin/pip)

So pip is definintely in /usr/local/bin/pip but it is been cached as in /usr/bin/pip, thanks to the Stackoverflow question, the solution is very simple:

$ hash -r

When the cache is clear, pip is working again.