我在Ubuntu 16.04上使用Python Dbus。我想将DBus上的字典列表返回给我的客户端,但似乎只能返回一个字符串数组。如果我将我的dbus签名装饰器改为'作为{v}',我会得到一个例外:" ValueError:Corrupt type signature"。如何返回DBus上的词典列表?
@dbus.service.method("com.example.service.BtScanList", in_signature='', out_signature='as')
def getScanList(self):
btMsg("Starting BT Scan List...")
# Populate device lists ( returns dictionary --> { 'mac_address' : xxx , 'name' : xxx }
self.discoveredDevs = self.getScannedDevices()
returnList = []
for dev in self.discoveredDevs:
returnList.append(dev["name"])
return returnList
编辑:这也不起作用:
@dbus.service.method("com.example.service.BtScanList", in_signature='', out_signature='a{sv}')
def getScanList(self):
btMsg("Starting BT Scan List...")
# Populate device lists ( returns dictionary --> { 'mac_address' : xxx , 'name' : xxx }
self.discoveredDevs = self.getScannedDevices()
returnList = dbus.Array()
for dev in self.discoveredDevs:
btMsg(dev)
returnList.append(dbus.Dictionary(dev, signature='sv'))
return returnList
答案 0 :(得分:1)
我明白了,答案就在这里:
@dbus.service.method("com.example.service.BtPairedList", in_signature='', out_signature='aa{ss}')
def getPairedList(self):
btMsg("Starting BT Paired List...")
# Populate device lists ( returns dictionary --> { 'mac_address' : xxx , 'name' : xxx }
self.pairedDevs = self.getPairedDevices()
returnList = dbus.Array()
for dev in self.pairedDevs:
btMsg(dev)
returnList.append(dbus.Dictionary(dev, signature='sv'))
return returnList