class_docstr: (contextlib.nested is not available on Py3)
class_docstr_tok: ["(","contextlib.nested","is","not","available","on","Py3",")"]
code: def __exit__(self, *a):
      pass
  
imports: from __future__ import unicode_literals
  import inspect
  import os
  import signal
  import sys
  import threading
  import weakref
  from wcwidth import wcwidth
  from six.moves import range
label_desc: Use image node_id 2 for calling the DummyContext obj's underlying member method code with example usage: obj.__exit__() without return types