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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 _always_running_service(name):
    '''
    Check if the service should always be running based on the KeepAlive Key
    in the service plist.

    :param str name: Service label, file name, or full path

    :return: True if the KeepAlive key is set to True, False if set to False or
        not set in the plist at all.

    :rtype: bool

    .. versionadded:: 2019.2.0
    '''

    # get all the info from the launchctl service
    service_info = show(name)

    # get the value for the KeepAlive key in service plist
    try:
        keep_alive = service_info['plist']['KeepAlive']
    except KeyError:
        return False

    # check if KeepAlive is True and not just set.

    if isinstance(keep_alive, dict):
        # check for pathstate
        for _file, value in six.iteritems(keep_alive.get('PathState', {})):
            if value is True and os.path.exists(_file):
                return True
            elif value is False and not os.path.exists(_file):
                return True

    if keep_alive is True:
        return True

    return False