服务器:

"""______lxh______"""

from socket import *
from threading import Thread
import os


class ImgDownload(Thread):
    def __init__(self, connect, address):
        super().__init__()
        self.connect = connect
        self.address = address

    def run(self) -> None:
        # 循环操作
        while True:
            re_ask = str(self.connect.recv(1024), encoding='utf-8')  # 获取请求
            if re_ask == 'a':
                while True:
                    # self.connect.send(input('输入:').encode())
                    rec = self.connect.recv(1024).decode()
                    if rec == 'exit':
                        break
                    else:
                        print(self.address, rec)

            elif re_ask == 'b':
                dirs = os.listdir('files')  # 获取文件目录列表
                str_dirs = str(dirs) + '\n请输入你想要的图片的名字:'
                self.connect.send(str_dirs.encode())  # 发送文件目录以及提示输入

                re_name = str(self.connect.recv(1024), encoding='utf-8')  # 接收客户端输入信息
                path = 'files/' + re_name  # 合成路径
                if os.path.exists(path):  # 对存在的文件进行操作
                    self.connect.send('图片存在!'.encode())
                    with open(path, 'rb') as f:
                        self.connect.send(f.read())
                else:
                    self.connect.send('图片不存在!'.encode())

            elif re_ask == 'exit':
                print(self.address, '退出连接')
                break


def main():
    server = socket()  # 创建套接字对象
    server.bind(('10.7.181.115', 9926))  # 绑定ip和端口
    server.listen(628)
    while True:  # 让程序一直运行
        connect, address = server.accept()  # 接收请求建立连接
        print(connect, address)  # 服务端打印请求信息
        ImgDownload(connect, address).start()   # 启动线程


if __name__ == '__main__':
    main()

客户端:

"""______lxh______"""

from socket import *

client = socket()       # 创建套接字对象
client.connect(('10.7.181.115', 9926))  # 连接ip和端口

path = 'im_client/'     # 文件存放路径

while True:
    print('a.请求文字信息\nb.请求图片信息\n(输入exit退出)')

    ask = input('输入:')
    client.send(ask.encode())       # 返回选项请求
    if ask == 'a':
        while True:
            # print('接收:%s' % client.recv(1024).decode())   # 打印文本信息
            user_in = input('输入exit退出\n输入:')
            if user_in == 'exit':
                break
            else:
                client.send(user_in.encode())

    elif ask == 'b':
        print(client.recv(1024).decode())
        im_name = input('输入图片名字:')
        client.send(im_name.encode())

        re_ask = client.recv(1024).decode()     # 接收文件是否存在
        print(re_ask)
        if re_ask != '图片不存在!':
            while True:
                re_img = client.recv(1024)
                with open(path + im_name, 'ab') as f:
                    f.write(re_img)
                if len(re_img) < 1024:
                    print('接收成功!')
                    break

    elif ask == 'exit':
        break