python_udp_socket问题

/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 /Users/dave/Desktop/python/python_project/网络编程/udp_socket.py
Traceback (most recent call last):
  File "/Users/dave/Desktop/python/python_project/网络编程/udp_socket.py", line 6, in <module>
    udp_socket = socket(AF_INET, SOCK_DGRAM)
NameError: name ‘AF_INET‘ is not defined

# coding=utf-8
# python version 3.6

from socket import socket

udp_socket = socket(AF_INET, SOCK_DGRAM)
send_data = input("请输入要发送的数据：")
send_addr = ("172.16.6.163", 8000)
udp_socket.sendto(send_data.encode("utf-8"), send_addr)
recv_data = udp_socket.recvfrom(1024)
print(recv_data)
udp_socket.close()