Merge pull request #361 from kevin-bates/fix-leak-ioloopkernelmanager

Fix leak of IOLoopKernelManager object

Author: minrk

jupyter_client/ioloop/manager.py

@@ -54,6 +54,7 @@ def stop_restarter(self):
         if self.autorestart:
             if self._restarter is not None:
                 self._restarter.stop()
+                self._restarter = None
 
     connect_shell = as_zmqstream(KernelManager.connect_shell)
     connect_iopub = as_zmqstream(KernelManager.connect_iopub)

jupyter_client/manager.py

@@ -286,6 +286,7 @@ def cleanup(self, connection_file=True):
 
         self.cleanup_ipc_files()
         self._close_control_socket()
+        self.session.parent = None
 
     def shutdown_kernel(self, now=False, restart=False):
         """Attempts to stop the kernel process cleanly.