pyqt wifi scan

from PyQt5.QtDBus import QDBusAbstractInterface, QDBusConnection

class Properties(QDBusAbstractInterface):
    def __init__(self, parent=None):
        super().__init__(parent.service(), parent.path(),
                'org.freedesktop.DBus.Properties', parent.connection(), parent)
    
    def __getitem__(self, name):
        r = self.call('Get', self.parent().interface(), name)
        if r:
            r = r.arguments()
        if r:
            return r[0]

class BSS(QDBusAbstractInterface):
    def __init__(self, path, parent=None):
        super().__init__('fi.w1.wpa_supplicant1', path,
                'fi.w1.wpa_supplicant1.BSS', QDBusConnection.systemBus(), parent)
        self.Properties = Properties(parent=self)
    
    @property
    def SSID(self):
        return self.Properties['SSID']
    
    @property
    def Signal(self):
        return self.Properties['Signal']         

class Interface(QDBusAbstractInterface):
    def __init__(self, path, parent=None):
        super().__init__('fi.w1.wpa_supplicant1', path,
                'fi.w1.wpa_supplicant1.Interface', QDBusConnection.systemBus(), parent)
        self.Properties = Properties(parent=self)

    def Scan(self):
        return self.call('Scan')
    
    @property
    def BSSs(self):
        return [ BSS(i, self) for i in self.Properties['BSSs'] ]
         



class wpa_supplicant1(QDBusAbstractInterface):
    def __init__(self, parent=None):
        super().__init__('fi.w1.wpa_supplicant1', '/fi/w1/wpa_supplicant1',
                'fi.w1.wpa_supplicant1', QDBusConnection.systemBus(), parent)
        self.Properties = Properties(parent=self)

    @property
    def Interfaces(self):
        return [ Interface(i, self) for i in self.Properties['Interfaces'] ]


supplicant = wpa_supplicant1()
if supplicant.isValid():
    for ifs in supplicant.Interfaces:
        ifs.Scan()        
        for bss in ifs.BSSs:
            print(bss.SSID.data().decode(), end='\t')
            print(bss.Signal)