code: def isatty(self):
      if self.closed:
          raise ValueError("I/O operation on closed file")
      return False
  
file_path: catboost/contrib/tools/python3/src/Lib/chunk.py
imports: import warnings
label_desc: Use image node_id 5 for calling the Chunk obj's underlying member method code with example usage: obj.isatty() and returns: False