code: def has(cls):
      """
      Check whether *cls* is a class with ``attrs`` attributes.
  
      :param type cls: Class to introspect.
      :raise TypeError: If *cls* is not a class.
  
      :rtype: bool
      """
      return getattr(cls, "__attrs_attrs__", None) is not None
  
file_path: catboost/contrib/python/attrs/py2/attr/_funcs.py
imports: from __future__ import absolute_import, division, print_function
  import copy
  from ._compat import iteritems
  from ._make import NOTHING, _obj_setattr, fields
  from .exceptions import AttrsAttributeNotFoundError
label_desc: Use image node_id 4 for calling a global function with example usage: has(cls) and returns: unknown