Python：即使检测到设备，也无法使用 PyBluez 扫描连接到蓝牙设备所需的信息

Question

I am using the PyBluez library to try to connect my computer to a bluetooth speaker. I am running windows 10.

When I use the discover_devices function, my speaker shows up just fine:

import bluetooth as bt

devices = bt.discover_devices(10, flush_cache=True, lookup_names=True, lookup_class=True)

for d in devices:
   print d

output:

('BB:B8:6D:D2:C1:6C', u'OontZ Angle 3 16C', 2360324) // this is my speaker

However, when I try to get information such as the port needed to connect to the device, it doesn't return anything at all:

devices = bt.discover_devices(10, flush_cache=True, lookup_names=True, lookup_class=True)

for d in devices:
    print d
    addr = d[0]
    print bt.find_service(address=addr) // this function returns info such as port, protocol, etc about devices

Output:

('BB:B8:6D:D2:C1:6C', u'OontZ Angle 3 16C', 2360324) // this is a speaker
[] // this should be a list of information about the device

Does anyone know what would cause this to happen? Here's some more information:

• If I just do a general bt.find_service() without specifying the mac address, the same thing happens
• Based on another post I saw, I am running pybluez-win10 instead of default pybluez. When running on the base version of pybluez, the code above gave the following error and stack trace:

File "C:\Python27\lib\site-packages\bluetooth\msbt.py", line 243, in find_service

dresults = bt.find_service (addr, uuidstr)

IOError: A

• This error has never showed up with pybluez-win10, but instead the output of the function is, as mentioned, empty.

Thank you.

Answer 1

you might need to install another version of Python, 3.5.4, and then download the wheel file specifically for this version of python.

wheel file URL and then use pip to install it: pip install PyBluez‑0.22‑cp35‑none‑win_amd64.whl