import socket
socket.socket(socket_family,socket_type,protocal=0)
socket_family(可以是AF_UNIX 或 AF_INET)
socket_type(可以是 SOCK_STREAM 或 SOCK_DGRAM)
protocal（一般不填，默认值为0）#获取tcp/ip套接字
tcpSock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)#获取udp/ip套接字
udpSock=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

#服务端
import socket
phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)  #买手机
phone.bind(("127.0.0.1",8000))  #绑定手机卡
phone.listen(5)  #开机print("starting.....")
conn,addr=phone.accept()  #等待电话链接print('电话线路是',conn)
print("客户端的手机号是",addr)
while True:#通信循环data=conn.recv(1024) #收消息print("客户端发来的消息是",data)conn.send(data.upper())conn.close()phone.close()执行结果：
starting.....
电话线路是 <socket.socket fd=304, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 8000), raddr=('127.0.0.1', 54668)>
客户端的手机号是 ('127.0.0.1', 54668)
客户端发来的消息是 b'bith'#客户端
import socket
phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.connect(("127.0.0.1",8000))while True:#通信循环msg=input(">>: ").strip()if not msg:continuephone.send(msg.encode("utf-8"))data=phone.recv(1024)print(data)phone.close()执行结果：
>>: bith
b'BITH'

#服务端：
import socket
phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)  #买手机
phone.bind(("127.0.0.1",8000))  #绑定手机卡
phone.listen(5)  #开机
print("starting.....")
while True: #链接循环conn,addr=phone.accept()  #等待电话链接print('电话线路是',conn)print("客户端的手机号是",addr)while True:#通信循环try: #应对Windows系统data=conn.recv(1024) #收消息print("客户端发来的消息是",data)conn.send(data.upper())except Exception:breakconn.close()phone.close()执行结果
starting.....
电话线路是 <socket.socket fd=304, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 8000), raddr=('127.0.0.1', 55009)>
客户端的手机号是 ('127.0.0.1', 55009)
客户端发来的消息是 b's'
电话线路是 <socket.socket fd=304, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 8000), raddr=('127.0.0.1', 55010)>
客户端的手机号是 ('127.0.0.1', 55010)#客户端
import socket
phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.connect(("127.0.0.1",8000))while True:#通信循环msg=input(">>: ").strip()if not msg:continuephone.send(msg.encode("utf-8"))data=phone.recv(1024)print(data)phone.close()