使用 Python 3 获取 USB 设备的序列号 [英] Get Serial Number of USB device with Python 3
问题描述
我一直在使用 pyusb 访问通过 USB 插入的打印机的详细信息.我目前有以下代码工作,但似乎不同的设备需要不同的索引.这是我当前的代码:
I have been using pyusb to access the detail of a printer plugged in via USB. I currently have the following code working, but it appears that different devices require a different index. Here is my current code:
import usb
dev = usb.core.find(idProduct=0x001f)
print(usb.util.get_string(dev,256,3))
dev2 = usb.core.find(idProduct=0x0009)
print(usb.util.get_string(dev2,256,3))
dev 的代码运行良好,输出序列号,但 dev2 输出Zebra",即制造商名称.如果我将 3 更改为 6 或 7 就可以了,但是第一个开发人员会返回错误.
The code for dev works perfectly, outputting a serial number, but dev2 outputs 'Zebra,' the manufacturer name. If I change 3 to either 6 or 7 it works, but then the first dev returns an error.
Python 2 中的一种解决方案是使用 print(dev.serial_number),但在 Python 3 的 pyusb 中似乎不存在 serial_number 属性.
One solution in Python 2 is to use print(dev.serial_number), but in the serial_number attribute doesn't appear to exist in pyusb for Python 3.
有没有办法让它在所有设备上都能可靠地工作?谢谢.
Is there a way to get this working reliably for all devices? Thanks.
推荐答案
对于目前的 PyUSB 1.0.2 版,我发现回答这个问题的正确语法是:
For the present PyUSB version 1.0.2, I found the correct syntax to answer this question to be:
import usb
dev = usb.core.find(idProduct=0x001f)
print( usb.util.get_string( dev, dev.iSerialNumber ) )
dev2 = usb.core.find(idProduct=0x0009)
print( usb.util.get_string( dev2, dev2.iSerialNumber ) )
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