pydoc

You can get all the installed module information using "python modules".

pydoc modules

...
AddressBook         __future__          django              pstats
AppKit              _abcoll             dl                  pty
AppleScriptKit      _ast                doctest             pwd
AppleScriptObjC     _bisect             dumbdbm             py2app
Audio_mac           _builtinSuites      dummy_thread        py2app_tests
Automator           _codecs             dummy_threading     py_compile
BaseHTTPServer      _codecs_cn          easy_install        pyclbr
Bastion             _codecs_hk          email               pydoc
CFNetwork           _codecs_iso2022     encodings           pydoc_data
CFOpenDirectory     _codecs_jp          errno               pyexpat
CGIHTTPServer       _codecs_kr          exceptions          quopri
CalendarStore       _codecs_tw          fcntl               random
Canvas              _collections        filecmp             re
...

pydoc doesn't recognize any special markups. If you want to get more from the docstring, you need other documentation generator such as epydoc, Doxygen, or Sphinx.

References

• http://docs.python.org/2/library/pydoc.html
• How to document Python code properly for Pydoc