Error when using sync port forward context manager in IPython

[jacobtomlinson]

Which project are you reporting a bug for?

kr8s

What happened?

When I run the following snippet in IPython I get an error.

import kr8s
try:
    pod = kr8s.objects.Pod.gen(name="test-pod", image="nginx:latest", ports=[{"containerPort": 80}])
    pod.create()
    with pod.portforward(80) as port:
        print(port)
finally:
    pod.delete()

---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
Cell In[1], line 5
      3     pod = kr8s.objects.Pod.gen(name="test-pod", image="nginx:latest", ports=[{"containerPort": 80}])
      4     pod.create()
----> 5     with pod.portforward(80) as port:
      6         print(port)
      7 finally:

File ~/Projects/kr8s-org/kr8s/kr8s/_objects.py:856, in Pod.portforward(self, remote_port, local_port, address)
    854 if self._asyncio:
    855     return AsyncPortForward(self, remote_port, local_port, address)
--> 856 return SyncPortForward(self, remote_port, local_port, address)

File ~/Projects/kr8s-org/kr8s/kr8s/_portforward.py:104, in PortForward.__init__(self, resource, remote_port, local_port, address)
    102 self._resource = resource
    103 self.pod = None
--> 104 self._loop = asyncio.get_event_loop()
    105 self._tasks = []
    106 self._run_task = None

File ~/miniconda3/envs/kr8s/lib/python3.11/asyncio/events.py:677, in BaseDefaultEventLoopPolicy.get_event_loop(self)
    674     self.set_event_loop(self.new_event_loop())
    676 if self._local._loop is None:
--> 677     raise RuntimeError('There is no current event loop in thread %r.'
    678                        % threading.current_thread().name)
    680 return self._local._loop

RuntimeError: There is no current event loop in thread 'MainThread'.

Anything else?

Running this in the standard Python REPL or in a script doesn't reproduce the issue.