Windows解决方案，要么接受，要么放弃。

在当前活动的无线局域网[无线局域网]上，即计算机的ip地址(wifi路由器或网络交换机)。

注意:它不是设备的公共IP，不涉及任何外部请求、包和公共api。

核心思想是解析shell命令:ipconfig或linux上的ifconfig的输出。我们使用子进程来获取输出。

def wlan_ip():
    import subprocess
    result=subprocess.run('ipconfig',stdout=subprocess.PIPE,text=True).stdout.lower()
    scan=0
    for i in result.split('\n'):
        if 'wireless' in i: #use "wireless" or wireless adapters and "ethernet" for wired connections
            scan=1
        if scan:
            if 'ipv4' in i:
                return i.split(':')[1].strip()
print(wlan_ip())

这是在CMD:'ipconfig'后发生的事情:

我们得到这个输出，我们在python中使用subprocess output捕获它。

C:\Users\戴尔> ipconfig

Wireless LAN adapter Wi-Fi:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::f485:4a6a:e7d5:1b1c%4
   IPv4 Address. . . . . . . . . . . : 192.168.0.131
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1

我们用python语言解析了字符串，以选择当前网络上无线适配器的IP的方式。

@fatal_error解决方案应该是接受的答案!这是他的解决方案在nodejs中的实现，以备人们需要:

const dgram = require('dgram');

async function get_local_ip() {
    const s = new dgram.createSocket('udp4');
    return new Promise((resolve, reject) => {
        try {
            s.connect(1, '8.8.8.8', function () {
                const ip = s.address();
                s.close();
                resolve(ip.address)
            });
        } catch (e) {
            console.error(e);
            s.close();
            reject(e);
        }
    })
}

import socket
socket.gethostbyname(socket.gethostname())

这并不总是有效(在/etc/hosts主机名为127.0.0.1的机器上返回127.0.0.1)，gimel显示的是一个缓和的方法，使用socket.getfqdn()代替。当然，您的机器需要一个可解析的主机名。

import socket
print(socket.gethostbyname(socket.getfqdn()))

import socket
socket.gethostbyname(socket.getfqdn())

这是UnkwnTech的答案的变体——它提供了一个get_local_addr()函数，该函数返回主机的主LAN ip地址。我发布它是因为这增加了一些东西:ipv6支持，错误处理，忽略localhost/linklocal地址，并使用TESTNET地址(rfc5737)来连接。

# imports
import errno
import socket
import logging

# localhost prefixes
_local_networks = ("127.", "0:0:0:0:0:0:0:1")

# ignore these prefixes -- localhost, unspecified, and link-local
_ignored_networks = _local_networks + ("0.", "0:0:0:0:0:0:0:0", "169.254.", "fe80:")

def detect_family(addr):
    if "." in addr:
        assert ":" not in addr
        return socket.AF_INET
    elif ":" in addr:
        return socket.AF_INET6
    else:
        raise ValueError("invalid ipv4/6 address: %r" % addr)

def expand_addr(addr):
    """convert address into canonical expanded form --
    no leading zeroes in groups, and for ipv6: lowercase hex, no collapsed groups.
    """
    family = detect_family(addr)
    addr = socket.inet_ntop(family, socket.inet_pton(family, addr))
    if "::" in addr:
        count = 8-addr.count(":")
        addr = addr.replace("::", (":0" * count) + ":")
        if addr.startswith(":"):
            addr = "0" + addr
    return addr

def _get_local_addr(family, remote):
    try:
        s = socket.socket(family, socket.SOCK_DGRAM)
        try:
            s.connect((remote, 9))
            return s.getsockname()[0]
        finally:
            s.close()
    except socket.error:
        # log.info("trapped error connecting to %r via %r", remote, family, exc_info=True)
        return None

def get_local_addr(remote=None, ipv6=True):
    """get LAN address of host

    :param remote:
        return  LAN address that host would use to access that specific remote address.
        by default, returns address it would use to access the public internet.

    :param ipv6:
        by default, attempts to find an ipv6 address first.
        if set to False, only checks ipv4.

    :returns:
        primary LAN address for host, or ``None`` if couldn't be determined.
    """
    if remote:
        family = detect_family(remote)
        local = _get_local_addr(family, remote)
        if not local:
            return None
        if family == socket.AF_INET6:
            # expand zero groups so the startswith() test works.
            local = expand_addr(local)
        if local.startswith(_local_networks):
            # border case where remote addr belongs to host
            return local
    else:
        # NOTE: the two addresses used here are TESTNET addresses,
        #       which should never exist in the real world.
        if ipv6:
            local = _get_local_addr(socket.AF_INET6, "2001:db8::1234")
            # expand zero groups so the startswith() test works.
            if local:
                local = expand_addr(local)
        else:
            local = None
        if not local:
            local = _get_local_addr(socket.AF_INET, "192.0.2.123")
            if not local:
                return None
    if local.startswith(_ignored_networks):
        return None
    return local