Merge pull request #452 from Bodo-inc/sahil/fix-eng-unreg-notif

Bug Fix: Resolve bug in engine unregistration handling in client

Author: minrk

ipyparallel/client/client.py

@@ -1599,6 +1599,7 @@ def send_apply_request(
             # possibly routed to a specific engine
             if isinstance(ident, list):
                 ident = ident[-1]
+            ident = ident.decode("utf-8")
             if ident in self._engines.values():
                 # save for later, in case of engine death
                 self._outstanding_dict[ident].add(msg_id)
@@ -1637,6 +1638,7 @@ def send_execute_request(
             # possibly routed to a specific engine
             if isinstance(ident, list):
                 ident = ident[-1]
+            ident = ident.decode("utf-8")
             if ident in self._engines.values():
                 # save for later, in case of engine death
                 self._outstanding_dict[ident].add(msg_id)