Question

我正在尝试用python编写脚本，因此我可以在1秒钟内找到插入笔记本电脑的USB串行适配器的COM号。我需要隔离COMx端口，以便显示结果并使用该特定端口打开腻子。你能帮我吗？

直到现在，我已经用批处理/ powershell编写了一个脚本，并且获得了此信息，但是我仍无法分隔COMx端口的文本，因此我可以使用串行参数调用腻子程序。我也可以通过Python找到端口，但无法将其与字符串隔离。

import re           # Used for regular expressions (unused)
import os           # To check that the path of the files defined in the config file exist (unused)
import sys          # To leave the script if (unused)
import numpy as np
from infi.devicemanager import DeviceManager
dm = DeviceManager()
dm.root.rescan()
devs = dm.all_devices
print ('Size of Devs: ',len(devs))
print ('Type of Devs: ',type(devs))
myarray = ([])
myarray =np.array(devs)
print ('Type of thing: ',type(myarray))
match = '<USB Serial Port (COM6)>' (custom match. the ideal would be "USB Serial Port")
i=0
#print (myarray, '\n')
while i != len(devs):
    if match == myarray[i]: 
        print ('Found it!')
        break
    print ('array: ',i," : ", myarray[i])
    i = i+1
print ('array 49: ', myarray[49]) (here I was checking what is the difference of the "element" inside the array)
print ('match   : ', match) (and what is the difference of what I submitted)
print ('end')

我期望if match == myarray [i]可以找到两个元素，但是由于某种原因，它找不到。让我感到这两个不一样。

谢谢您的帮助！

===更新=== 完整的脚本可以在这里找到 https://github.com/elessargr/k9-serial

Answer 1

这是@MacrosG的后续回答
我尝试了一个带有Device

属性的最小示例

from infi.devicemanager import DeviceManager
dm = DeviceManager()
dm.root.rescan()
devs = dm.all_devices
print ('Size of Devs: ',len(devs))
for d in devs:
    if  "USB" in d.description :
         print(d.description)

Answer 2

如果Python说的字符串不一样，我敢说很可能不是。

您可以与以下内容进行比较：

if  "USB Serial Port" in devs[i]:

这时，您应该找不到一个完整的字母匹配项，而是一个包含USB端口的匹配项。

不需要使用numpy，devs已经是列表，因此可以迭代。

Answer 3

如果要使用正则表达式执行此操作：

def main():

    from infi.devicemanager import DeviceManager
    import re

    device_manager = DeviceManager()
    device_manager.root.rescan()

    pattern = r"USB Serial Port \(COM(\d)\)"

    for device in device_manager.all_devices:
        try:
            match = re.fullmatch(pattern, device.friendly_name)
        except KeyError:
            continue
        if match is None:
            continue
        com_number = match.group(1)
        print(f"Found device \"{device.friendly_name}\" -> com_number: {com_number}")

    return 0


if __name__ == "__main__":
    import sys
    sys.exit(main())

输出：

Found device "USB Serial Port (COM3)" -> com_number: 3

Answer 4

自从我采用他的解决方案以来，非常感谢所有人，尤其是bigdataolddriver

最后一件事！

for d in devs:
    if  "USB Serial Port" in d.description :
        str = d.__str__()
        COMport = str.split('(', 1)[1].split(')')[0]
        i=1
        break
    else:
        i=0

if i == 1:
    print ("I found it!")
    print(d.description, "found on : ", COMport)
    subprocess.Popen(r'"C:\Tools\putty.exe" -serial ', COMport)
elif i ==0:
    print ("USB Serial Not found \nPlease check physical connection.")
else:
    print("Error")

有什么想法如何将COMport作为参数传递给putty.exe？

=====更新=====

if i == 1:
    print ("I found it!")
    print(d.description, "found on : ", COMport)
    command = '"C:\MyTools\putty.exe" -serial ' + COMport
    #print (command)
    subprocess.Popen(command)

谢谢大家！

使用Python脚本查找USB串行端口

4 个答案: