dispatch_test.py

# python3 -m venv my-venv
# source my-venv/bin/activate
# pip3 install --upgrade pip setuptools wheel
# python3 dispatch_test.py
# deactivate

import ctypes
import objc
from PyObjCTools import AppHelper
import CoreBluetooth

NULL_PTR = ctypes.POINTER(ctypes.c_int)()

lib = ctypes.cdll.LoadLibrary("/usr/lib/system/libdispatch.dylib")
_dispatch_queue_create = lib.dispatch_queue_create
_dispatch_queue_create.argtypes = [ctypes.c_char_p, ctypes.c_void_p]  # 2nd param is stuct, but we don't use it.
_dispatch_queue_create.restype = ctypes.c_void_p

def dispatch_queue_create(name):
    b_name = name.encode('utf-8')
    c_name = ctypes.c_char_p(b_name)
    return _dispatch_queue_create(c_name, NULL_PTR)


class DispatchTest():

    def __init__(self):

        try:
            with objc.autorelease_pool():
                dispatch_queue = dispatch_queue_create('blesonq')
                queue_ptr = objc.objc_object(c_void_p=dispatch_queue)
                manager = CoreBluetooth.CBCentralManager.alloc()
                manager.initWithDelegate_queue_options_(self, queue_ptr, None)
                manager.scanForPeripheralsWithServices_options_(None, None)

                AppHelper.runConsoleEventLoop(installInterrupt=True)
        except Exception as e:
            print(e)


    # CoreBluetooth CentralManager Protocol

    def centralManagerDidUpdateState_(self, manager):
        print(manager.state())

    def centralManager_didDiscoverPeripheral_advertisementData_RSSI_(self, manager, peripheral, data, rssi):
        print(peripheral)


DispatchTest()