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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 list_conf(conf_file=default_conf, log_file=None, include_unset=False):
    '''
    Show parsed configuration

    .. versionadded:: 2018.3.0

    conf_file : string
        path to logadm.conf, defaults to /etc/logadm.conf
    log_file : string
        optional show only one log file
    include_unset : boolean
        include unset flags in output

    CLI Example:

    .. code-block:: bash

        salt '*' logadm.list_conf
        salt '*' logadm.list_conf log=/var/log/syslog
        salt '*' logadm.list_conf include_unset=False
    '''
    cfg = _parse_conf(conf_file)
    cfg_parsed = {}

    ## parse all options
    for entry in cfg:
        log_cfg = _parse_options(entry, cfg[entry], include_unset)
        cfg_parsed[log_cfg['log_file'] if 'log_file' in log_cfg else log_cfg['entryname']] = log_cfg

    ## filter
    if log_file and log_file in cfg_parsed:
        return {log_file: cfg_parsed[log_file]}
    elif log_file:
        return {log_file: 'not found in {}'.format(conf_file)}
    else:
        return cfg_parsed