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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def agents():
 """Lists the currently active agents"""

    print 'The following LiveSync agents are active:'
    agent_list = LiveSyncAgent.find().order_by(LiveSyncAgent.backend_name, db.func.lower(LiveSyncAgent.name)).all()
    table_data = [['ID', 'Name', 'Backend', 'Initial Export', 'Queue']]
    for agent in agent_list:
        initial = (cformat('%{green!}done%{reset}') if agent.initial_data_exported else
                   cformat('%{yellow!}pending%{reset}'))
        if agent.backend is None:
            backend_title = cformat('%{red!}invalid backend ({})%{reset}').format(agent.backend_name)
        else:
            backend_title = agent.backend.title
        table_data.append([unicode(agent.id), agent.name, backend_title, initial,
                           unicode(agent.queue.filter_by(processed=False).count())])
    table = AsciiTable(table_data)
    table.justify_columns[4] = 'right'
    print table.table
    if not all(a.initial_data_exported for a in agent_list):
        print
        print "You need to perform the initial data export for some agents."
        print cformat("To do so, run "
                      "%{yellow!}indico livesync initial_export %{reset}%{yellow}<agent_id>%{reset} for those agents.")