code: def get_my_ips():
      
      ips = list()
      if not os.path.exists("/sys/class/net"): # not linux
          return ['127.0.0.1']
      for ifdev in os.listdir("/sys/class/net"):
          if ifdev == "lo":
              continue
          try:
              sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
              ips.append(socket.inet_ntoa(fcntl.ioctl(
                  sock.fileno(),
                  0x8915,  # SIOCGIFADDR
                  struct.pack('256s', ifdev[:15].encode())
              )[20:24]))
          except OSError:
              pass
      return ips
docs: highly os specific - works only in modern linux kernels