Add self.socket accessor

Add sip.isdeleted() check for preventing
"RuntimeError: wrapped C/C++ object of type QLocalSocket has been
deleted"

Author: ckaraneen

pybpodapi/bpod/emulator/emulator.py

@@ -16,6 +16,7 @@
 from .state import State
 from AnyQt import QtCore
 from AnyQt import QtNetwork
+from PyQt5 import sip
 from pybpodapi.bpod_modules.bpod_modules import BpodModules
 
 logger = logging.getLogger(__name__)
@@ -76,7 +77,13 @@ def __init__(self, hardware):
         self._init_hardware(hardware)
         self._state = State(self.hardware)
         self._manual_override_events = queue.Queue()
-        self.socket = QtNetwork.QLocalSocket()
+        self._socket = None
+
+    @property
+    def socket(self):
+        if self._socket is None or sip.isdeleted(self._socket):
+            self._socket = QtNetwork.QLocalSocket()
+        return self._socket
 
     @property
     def hardware(self):