code: def __str__(self):
      if len(self._label) == 0:
          return "Ignore: {}".format(self._ignored_features_str)
      else:
          return "{}".format(self._label)
  
file_path: catboost/catboost/python-package/catboost/eval/execution_case.py
imports: import json
  from ..None import CatBoostError
  from ..eval.factor_utils import FactorUtils
  from ..core import _NumpyAwareEncoder
label_desc: Use image node_id 7 for calling the ExecutionCase obj's underlying member method code with example usage: obj.__str__() and returns: str, str