keychain.py

#!/usr/bin/env python

import getopt
import sys
import keyring
import getpass

"""
Password wrapper, get and store passwords to system keyring
License: Apache Software License
Author: Bryan Hunt (binarytemple)
"""

def helpmsg():
    msg="%s \n" % ( sys.argv[0] )  
    msg+="""
    -h --help (this message)
    -g --get 
    or
    -s --set
    -a <account> --account=<account>
    -u <user> --user=<user>
    """
    print msg

def parse(args_array):
  """
  >>> parse('--set --account=foo --user=bar'.split())
  ([('--set', ''), ('--account', 'foo'), ('--user', 'bar')], [])
  >>> parse('--get --account=foo --user=bar'.split())
  ([('--get', ''), ('--account', 'foo'), ('--user', 'bar')], [])
  >>> parse('--help'.split())
  ([('--help', '')], [])
  >>> parse('-h'.split())
  ([('-h', '')], [])
  """
  import getopt
  return getopt.getopt(args_array, ':hgsa:u:',[ "help","get","set","account=","user="])

def main():
  try:
    opts, args = parse(sys.argv[1:])
  except getopt.error, msg:
    print msg
    helpmsg()
    sys.exit(1)

  account=""
  user=""
  action=""
  
  # process options
  for o, a in opts:
    if o in ("-h", "--help"):
      helpmsg()
      sys.exit(0)
    if o in "-g" or o == "--get":
      action = "get"
    if o in "-s" or o == "--set":
      action = "set"
    if o in "-a" or o == "--account":
      account = a
    if o in "-u" or o == "--user":
      user = a

  if action == "" or user == "" or account == "" or len(opts) == 0:
    helpmsg()
    sys.exit(1)

  #print "%s, %s, %s %s" % ( action, user, account, len(opts) )

  if action == "get":
    password=keyring.get_password(account,user)
    if password == None:
      print "Password not found"
      sys.exit(1)
    else:
      print password
  elif action == "set":
    print "Please enter the password"
    password=getpass.getpass()
    if password == None or password == "":
      print "Empty password provided, password not set"
      sys.exit(1)
    
    keyring.set_password(account,user,password)

if __name__ == "__main__":
    main()

Also : http://lzone.de/blog/Access%20GnomeKeyring%20with%20Python%20GIR