What is PyPI?

PyPI stands for the Python Package Index. It is pronounced as either PIE-P-I or PIE-PEE, not PIE-PIE (which means PyPy, the interpreter).

Also called the Cheeseshop. This is an inside joke referencing the same-named sketch of Monty Python’s Flying Circus.

Seriously, what is PyPI

A server running in Guido’s bedroom [1] to host all of Python’s third-party packages.

[1]Just kidding. It is sponsored by Rackspace IIRC.

Your computer sends requests to it when you pip install (by default).

Currently located at https://pypi.python.org.