class_docstr: Object to manage sys.displayhook.
  
  This came from IPython.core.kernel.display_hook, but is simplified
  (no callbacks or formatters) until more of the core is refactored.
code: def __exit__(self, type, value, traceback):
      if self._nested_level == 1:
          self.unset()
      self._nested_level -= 1
      # Returning False will cause exceptions to propagate
      return False
  
file_path: catboost/contrib/python/ipython/py3/IPython/core/display_trap.py
imports: import sys
  from traitlets.config.configurable import Configurable
  from traitlets import Any
label_desc: Use image node_id 3 for calling the DisplayTrap obj's underlying member method code with example usage: obj.__exit__(type, value, traceback) and returns: False