class_docstr: Kernel for testing subprocess signaling
class_docstr_tok: ["Kernel","for","testing","subprocess","signaling"]
code: def __init__(self, **kwargs):
      kwargs.pop("user_ns", None)
      super(SignalTestKernel, self).__init__(**kwargs)
      self.children = []
  
file_path: catboost/contrib/python/jupyter-client/py2/jupyter_client/tests/signalkernel.py
imports: from __future__ import print_function
  from subprocess import Popen, PIPE
  import sys
  import time
  from ipykernel.displayhook import ZMQDisplayHook
  from ipykernel.kernelbase import Kernel
  from ipykernel.kernelapp import IPKernelApp
label_desc: Use image node_id 1 to create a new SignalTestKernel object from inherited base classes: Kernel with example: obj = SignalTestKernel()