Today I learned about the pydoc command from Python. Even if you're offline you can access the standard library documentation running from a local copy using the command mentioned above.

Simply introduce this command in your terminal:

1

$ pydoc -p 8000

Then you can go to http://locahost:8000. This way you can browse the documentation for all your installed Python modules in the same way you'd use the 'help' command from the Python CLI.

[1] http://docs.python.org/library/pydoc.html

[2] http://pydoc.org/