pythonホストIPの取得

# -*- coding=utf8 -*-

import socket


def get_local_ip():
    host_ip = "1.1.1.1"  # get ip by config
    if not is_ipv4_address(host_ip):
        try:
            host_ip = get_host_ip_by_socket()
        except Exception as err:
            print("Get IP ERROR by socket method, err: %s" % err)
            host_ip = "127.0.0.1"
    return host_ip


def get_host_ip_by_socket():
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        s.connect(("8.8.8.8", 80))
        ip = s.getsockname()[0]
        if is_ipv4_address(ip):
            return ip
    except Exception as err:
        print("Through link to '8.8.8.8:80' get IP Error: %s" % err)
        ip = socket.gethostbyname(socket.gethostname())
        print("Get IP by host name: %s" % ip)
    finally:
        s.close()
    return ip


def is_ipv4_address(string_ip):
    """
    :rtype: bool
    """
    try:
        socket.inet_aton(string_ip)
    except socket.error:
        return False
    return True


if __name__ == '__main__':
    print get_local_ip()