escpos 错误 'usb_detach_kernel_driver_np' 未找到答案

【问题标题】：escpos erro 'usb_detach_kernel_driver_np' not foundescpos 错误 'usb_detach_kernel_driver_np' 未找到
【发布时间】：2019-01-24 15:51:30
【问题描述】：

我尝试用热敏打印机打印一张票。我使用模块escpos

但是当我在 Windows 中运行脚本时，它会向我发送以下错误

Traceback (most recent call last):
      File "C:\Users\Angel\Desktop\Escritorio\impreimer.py", line 5, in <module>
        Epson = printer.Usb(0x1a86,0x7584,1)
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\site-packages\escpos\printer.py", line 51, in __init__
        self.open()
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\site-packages\escpos\printer.py", line 68, in open
        self.device.detach_kernel_driver(0)
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\site-packages\usb\core.py", line 1077, in detach_kernel_driver
        interface)
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\site-packages\usb\backend\libusb0.py", line 606, in detach_kernel_driver
        _check(_lib.usb_detach_kernel_driver_np(dev_handle, intf))
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\ctypes\__init__.py", line 361, in __getattr__
        func = self.__getitem__(name)
      File "C:\Users\Angel\AppData\Local\Programs\Python\Python36\lib\ctypes\__init__.py", line 366, in __getitem__
        func = self._FuncPtr((name_or_ordinal, self))
    AttributeError: function 'usb_detach_kernel_driver_np' not found
    [Finished in 0.5s with exit code 1]

这是我的代码：

import sys
from escpos import *

pr = printer.Usb(0x1a86,0x7584)

我该如何解决这个问题？

【问题讨论】：

标签： python python-3.x escpos

【解决方案1】：

试试这个。

pr = 打印机.Usb(0x1a86,0x7584, interface=0, in_ep=0x82, out_ep=0x02)

如果您使用的是 Windows，则需要使用 zadig 或 LibusbK 等程序并安装过滤器。

https://zadig.akeo.ie/

http://libusbk.sourceforge.net/UsbK3/index.html

【讨论】：