Checking installed python modules

To check the installed python modules, there are 2 ways:

1. run help('modules') command in the python shell, as below:

• $ python
  Python 2.6.6 (r266:84292, Sep 11 2012, 08:28:27)
  [GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> help ('modules')
  
  Please wait a moment while I gather a list of all available modules...
  
  BaseHTTPServer      cProfile            imghdr              robotparser
  Bastion             cStringIO           imp                 rpm
  CDROM               cairo               imputil             rpmUtils

2. and if you need to filter your search, running it directly from linux shell is the best, where you can use grep as below to filter your search, where -c is the flag for running a python command

• $ python -c "help('modules')" | grep token
  _socket             future_builtins     pipes               token
  _sqlite3            gc                  pkg_resources       tokenize