1. 发送端

import socket
import struct

def send_image(filename):
    # 创建socket对象
    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        client_socket.connect(('192.168.129.160', 12345))  # 连接到Ubuntu单片机的IP地址和端口
        # 发送文件名
        client_socket.send(filename.encode('utf-8'))
        print(filename.encode('utf-8'))

        # 发送文件大小
        with open(filename, 'rb') as f:  # 确保文件在这里打开
            filesize = f.seek(0, 2)  # 获取文件大小
            f.seek(0)
            client_socket.send(struct.pack('<I', filesize))  # 发送文件大小，使用小端序

            # 发送文件数据
            while True:
                chunk = f.read(1024)
                if not chunk:
                    break
                client_socket.send(chunk)
        print("文件发送完成。")
    except Exception as e:
        print(f"发送过程中发生错误: {e}")
    finally:
        client_socket.close()  # 确保socket连接被关闭

if __name__ == "__main__":
    send_image(r'E:\Desktop\Work_Project\API2\fpga\siamfc-pytorch\video\111.png')  # 替换为你的图片路径

2. 接收端

# 客户端
import os.path
import socket
import struct

def receive_image_from_networkport():
    """
    无输入
    返回保存在下位机的模板的路径，以便后续调用
    """
    # 保存路径
    save_img_dir = r"E:\Desktop\Work_Project\API2\fpga\api\temp"
    if not os.path.exists(save_img_dir):
        os.makedirs(save_img_dir)

    # 创建socket对象
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind(('192.168.129.160', 12345))  # 监听所有网络接口上的12345端口
    server_socket.listen(1)  # 最多可以挂起1个未完成的连接
    print("等待连接...")

    # 接受连接
    client_socket, addr = server_socket.accept()
    print("连接地址: %s" % str(addr))

    # 接收文件名和文件大小

    filename = client_socket.recv(1024).decode('utf-8')

    import re
    last_str = filename.split(".")[-1]
    cleaned_last_str = re.sub(r'[^a-zA-Z]', '', last_str)

    if cleaned_last_str[-1] == 'r':
        cleaned_last_str = cleaned_last_str[:-1]

    filename = filename.split(".")[0] + f".{cleaned_last_str}"

    img_name = filename.split("\\")[-1]
    save_img_path = os.path.join(save_img_dir, img_name)
    print(save_img_path)

    filesize = int.from_bytes(client_socket.recv(4), byteorder='little')

    # 接收文件数据
    with open(save_img_path, 'wb') as f:
        while True:
            chunk = client_socket.recv(1024)
            if not chunk:
                break
            f.write(chunk)
    print("模板图片上传成功！")
    client_socket.close()
    server_socket.close()

    print("save_img_path", save_img_path)
    return save_img_path

if __name__ =='__main__':
    img_path = receive_image_from_networkport()
    print(img_path)

先运行接收端的代码，且ip改为接收端的ip，然后选择发送图片，运行发送端的代码。