How to see sizes of installed pip packages?

debian, linux, pip, python

Solution

Go to the package site to find the size e.g. https://pypi.python.org/pypi/pip/json

Then expand `releases`, find the version, and look up the `size` (in bytes).

Problem

On Linux Debian, how can I list all installed python pip packages and the size (amount of disk space used) that each one takes up?

Original source