try again

Author: blink1073

jupyter_client/client.py

@@ -2,6 +2,7 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 import asyncio
+import atexit
 import sys
 import time
 import typing as t
@@ -93,7 +94,9 @@ class KernelClient(ConnectionFileMixin):
     context = Instance(zmq.asyncio.Context)
 
     def _context_default(self) -> zmq.asyncio.Context:
-        return zmq.asyncio.Context()
+        context = zmq.asyncio.Context()
+        atexit.register(context.destroy)
+        return context
 
     # The classes to use for the various channels
     shell_channel_class = Type(ChannelABC)
@@ -112,10 +115,6 @@ def _context_default(self) -> zmq.asyncio.Context:
     # flag for whether execute requests should be allowed to call raw_input:
     allow_stdin: bool = True
 
-    def __del__(self):
-        """Destroy our context when we are garbage collected."""
-        self.context.destroy()
-
     # --------------------------------------------------------------------------
     # Channel proxy methods
     # --------------------------------------------------------------------------

pyproject.toml

@@ -41,13 +41,14 @@ filterwarnings= [
   # Fail on warnings
   "error",
 
+  # We're missing an event loop close somewhere.
+  "ignore:unclosed <socket.socket:ResourceWarning",
+  "ignore:unclosed event loop:ResourceWarning",
+
   # Workaround for https://github.com/tornadoweb/tornado/issues/3106
   # (To be fixed in Tornado 6.2)
   "ignore:There is no current event loop:DeprecationWarning:tornado",
 
-  # Randomly occuring.
-  "ignore:unclosed <socket.socket:ResourceWarning",
-
   # ZMQ uses Future internally, which raises a DeprecationWarning
   # When there is no loop running.
   # We could eventually find a way to make sure these are only created