服务器

import socket
#服务器
sever = socket.socket()
sever.bind(('10.7.156.57',8888))
sever.listen(512)
print('开始监听')
while True:
    conversation,addr = sever.accept()
    print('正在会话中')
    while True:
        # 接收消息
        message_re = conversation.recv(1024).decode('utf-8')
        print('客户端(%s): %s' % (addr[0][-2:], message_re))
        if message_re == '1':
            print('对方需要图片,正在发送')
            with open('./aa.jpg', 'br') as f:
                content = f.read()
                conversation.send(content)

                conversation.close()
            print('已发送')
        if message_re == '2':
            print('对方需要文字')
            content = '这是一段文字请保存'
            print('已发送')
            conversation.send(content.encode('utf-8'))
        if message_re == '3':
            print('对方终止了会话')
            break

客户端

#客户端
import socket
client = socket.socket()
client.connect(('10.7.156.57',8888))
data = bytes()
while True:
    # message_re = conversation.recv(1024).decode('utf-8')
    # print('客户端(%s): %s' % (addr[0][-2:],message_re))
    print('===============\n1.需要图片\n2.需要文字\n3.通知结束\n===============')
    instruction = input('请选择操作:')
    if instruction == '1':
        message = '1'
        client.send(message.encode('utf-8'))
        print('已选择需要图片')
        message_re = client.recv(1024)
        data += message_re  # 将每次获取到的数据叠加
        # print('接收到数据')
        message_re = client.recv(1024)

        with open('./new.jpg', 'bw') as f:
            f.write(data)
        print('接收完成')
    elif instruction == '2':
        message = '2'
        client.send(message.encode('utf-8'))
        print('已选择需要文字')
        re_data = client.recv(1024)
        print('服务器:', re_data.decode('utf-8'))
    elif instruction == '3':
        message = '3'
        client.send(message.encode('utf-8'))
        print('通知结束')
        # break
    else:
        print('错误指令')