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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 remove(name, log_file=None):
    '''
    Remove a log from the logadm configuration

    name : string
        entryname
    log_file : string
        (optional) log file path

    .. note::
        If log_file is specified it will be used instead of the entry name.

    '''
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': ''}

    # retrieve all log configuration
    config = __salt__['logadm.list_conf']()

    # figure out log_file and name
    if not log_file:
        if name.startswith('/'):
            log_file = name
            name = None
        else:
            for log in config:
                if 'entryname' in config[log] and config[log]['entryname'] == name:
                    log_file = config[log]['log_file']
                    break
    if not name:
        for log in config:
            if 'log_file' in config[log] and config[log]['log_file'] == log_file:
                if 'entryname' in config[log]:
                    name = config[log]['entryname']
                break

    # remove log if needed
    if log_file in config:
        res = __salt__['logadm.remove'](name if name else log_file)
        ret['result'] = 'Error' not in res
        if ret['result']:
            ret['comment'] = 'Configuration for {} removed.'.format(log_file)
            ret['changes'][log_file] = None
        else:
            ret['comment'] = res['Error']
    else:
        ret['result'] = True
        ret['comment'] = 'No configuration for {} present.'.format(log_file)

    return ret