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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 default_start():
 """ Use `sys.argv` for starting parameters. This is the entry-point of `vlcp-start` """

    (config, daemon, pidfile, startup, fork) = parsearg()
    if config is None:
        if os.path.isfile('/etc/vlcp.conf'):
            config = '/etc/vlcp.conf'
        else:
            print('/etc/vlcp.conf is not found; start without configurations.')
    elif not config:
        config = None
    main(config, startup, daemon, pidfile, fork)