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 __init__(self, **kwargs):
      self._old_scope = None
      for value in kwargs.values():
          if not isinstance(value, string_types):
              raise ValueError("Attributes need to be string")
      self._attr = kwargs
  
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 1 to create a new AttrScope object  with example: obj = AttrScope()