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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 get_lan_ip(interface="default"):
 if sys.version_info < (3, 0, 0):
 if type(interface) == str: interface = unicode(interface) else: if type(interface) == bytes: interface = interface.decode("utf-8") # Get ID of interface that handles WAN stuff. default_gateway = get_default_gateway(interface) gateways = netifaces.gateways() wan_id = None if netifaces.AF_INET in gateways: gw_list = gateways[netifaces.AF_INET] for gw_info in gw_list: if gw_info[0] == default_gateway: wan_id = gw_info[1] break # Find LAN IP of interface for WAN stuff. interfaces = netifaces.interfaces() if wan_id in interfaces: families = netifaces.ifaddresses(wan_id) if netifaces.AF_INET in families: if_info_list = families[netifaces.AF_INET] for if_info in if_info_list: if "addr" in if_info: return if_info["addr"] """ Execution may reach here if the host is using virtual interfaces on Linux and there are no gateways which suggests the host is a VPS or server. In this case """

    if platform.system() == "Linux":
        if ip is not None:
            return ip.routes["8.8.8.8"]["prefsrc"]

    return None