class_docstr: Attribute manager for scoping.
  
  User can also inherit this object to change naming behavior.
  
  Parameters
  ----------
  kwargs
      The attributes to set for all symbol creations in the scope.
code: def __exit__(self, ptype, value, trace):
      assert self._old_scope
      _current.set(self._old_scope)
  
file_path: mxnet/python/mxnet/attribute.py
imports: import contextvars
  from collections import defaultdict
  from .base import string_types
label_desc: Use image node_id 4 for calling the AttrScope obj's underlying member method code with example usage: obj.__exit__(ptype, value, trace) without return types