如何在Python中读取USB连接的手机文件？

import usb.core
import usb.util

def find_phone_device(vendor_id, product_id):
    phone = usb.core.find(idVendor=vendor_id, idProduct=product_id)
    return phone

def open_phone_device(phone):
    phone.set_configuration()

def read_phone_file(phone, endpoint_address):
    endpoint = phone[0][(0, 0)][endpoint_address]
    data = endpoint.read(endpoint.wMaxPacketSize)
    return data

def close_phone_device(phone):
    usb.util.release_interface(phone, 0)

# 主程序入口
if __name__ == '__main__':
    # 设置手机的Vendor ID和Product ID
    vendor_id = 0x1234
    product_id = 0x5678

    # 查找手机设备
    phone = find_phone_device(vendor_id, product_id)

    if phone is None:
        print('未找到手机设备')
        exit()

    try:
        # 打开手机设备
        open_phone_device(phone)

        # 读取手机文件（示例中使用了Endpoint 0x81，根据实际情况修改）
        file_data = read_phone_file(phone, 0x81)

        # 处理手机文件数据
        # TODO: 进行文件处理操作

    finally:
        # 关闭手机设备
        close_phone_device(phone)