server

import socketdef send_file_2_client(new_socket,new_addr):    file_name = new_socket.recv(1024).decode('utf-8')    print('客户端(%s)需要下载的文件是：%s'%(str(new_addr),file_name))    file_content = None    try:        f = open(file_name,'rb')        file_content = f.read()        f.close    except Exception as e:        print('没有找到客户端要下载的文件(%s)'%file_name)    if file_content:        new_socket.send(file_content)def main():    tcp_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)    tcp_socket.bind(('',8888))    tcp_socket.listen(128)    while True:        new_socket,new_addr = tcp_socket.accept()        send_file_2_client(new_socket,new_addr)        new_socket.close()    tcp_socket.close()if __name__ == '__main__':    main()

client

import socketdef main():    tcp_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)    ip = input('请输入对方IP：')    port = int(input('请输入对方端口：'))    tcp_socket.connect((ip,port))    file = input('请输入要下载的文件(包含后缀)：')    tcp_socket.send(file.encode('utf-8'))    data = tcp_socket.recv(1024)    if data:        with open('[cp]'+file,'wb') as f:            f.write(data)    tcp_socket.close()if __name__ == '__main__':    main()