Python错误：发送图像时“socket.error：[Errno 11]资源暂时不可用”

I want to make a program that accesses images from files, encodes them, and sends them to an server. Than the server is supposed to decode the image, and save it to file. I tested the image encoding itself, and it worked, so the problem lies in the server and client connection.I want to make a program that accesses images f