Name the threads IOPub and Heartbeat for easier debugging

Author: edisongustavo

ipykernel/heartbeat.py

@@ -32,7 +32,7 @@ class Heartbeat(Thread):
     def __init__(self, context, addr=None):
         if addr is None:
             addr = ('tcp', localhost(), 0)
-        Thread.__init__(self)
+        Thread.__init__(self, name="Heartbeat")
         self.context = context
         self.transport, self.ip, self.port = addr
         self.original_port = self.port

ipykernel/iostream.py

@@ -69,7 +69,7 @@ def __init__(self, socket, pipe=False):
         self._local = threading.local()
         self._events = deque()
         self._setup_event_pipe()
-        self.thread = threading.Thread(target=self._thread_main)
+        self.thread = threading.Thread(target=self._thread_main, name="IOPub")
         self.thread.daemon = True
 
     def _thread_main(self):