code: def is_callable():
      """
      A validator that raises a `attrs.exceptions.NotCallableError` if the
      initializer is called with a value for this particular attribute
      that is not callable.
  
      .. versionadded:: 19.1.0
  
      :raises attrs.exceptions.NotCallableError: With a human readable error
          message containing the attribute (`attrs.Attribute`) name,
          and the value it got.
      """
      return _IsCallableValidator()
  
imports: import operator
  import re
  from contextlib import contextmanager
  from re import Pattern
  from ._config import get_run_validators, set_run_validators
  from ._make import _AndValidator, and_, attrib, attrs
  from .converters import default_if_none
  from .exceptions import NotCallableError
label_desc: Use image node_id 9 for calling a global function with example usage: is_callable() and returns: _IsCallableValidator