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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 diff_config(ctx, second_host, mode):
 """ Config comparison between two devices. @param ctx: The click context paramter, for receiving the object dictionary | being manipulated by other previous functions. Needed by any | function with the @click.pass_context decorator. @type ctx: click.Context @param second_host: The IP/hostname of the second device to pull from @type second_host: str @param mode: The mode in which we are retrieving the config ('set' or | 'stanza') @type mode: str @returns: None. Functions part of click relating to the command group | 'main' do not return anything. Click handles passing context | between the functions and maintaing command order and chaining. """

    mp_pool = multiprocessing.Pool(multiprocessing.cpu_count() * 2)
    for ip in ctx.obj['hosts']:
        mp_pool.apply_async(wrap.open_connection, args=(ip,
                            ctx.obj['conn']['username'],
                            ctx.obj['conn']['password'],
                            wrap.diff_config, [second_host, mode],
                            ctx.obj['out'],
                            ctx.obj['conn']['connect_timeout'],
                            ctx.obj['conn']['session_timeout'],
                            ctx.obj['conn']['port']), callback=write_out)
    mp_pool.close()
    mp_pool.join()