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   源码介绍

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用来登录北工大lgn，lgn6

# Get ipv4_server_ip from login page
    result = re.match(r'.*v4serip=\'(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\'', data, re.DOTALL)
    if not result:
        if data.find('DispTFM') != -1:
            print('Error: re.match get ipv4_server_ip failed, have you already logged in?\n'
                  'Please use the following command to logout if you want:\n'
                  '\t', sys.argv[0], '--logout\n')
            print('Tring to get current logged in account status ...')
            gateway_account_status()
        else:
            print('Error: re.match get ipv4_server_ip failed')
        return -1

# POST data to final lgn login page
    req = request.Request(LGN_LOGIN_URL)
    req.add_header('User-Agent', SIMULATED_UA)
    post_data = {'DDDDD': username, 'upass': password, '0MKKey': 'Login', 'v6ip': ipv6_server_ip}
    post_data = urllib.parse.urlencode(post_data).encode()
    f = request.urlopen(req, post_data)
    data = f.read().decode('gb2312')