class_docstr: This module provides the EnvFileSaver class, which is used to save, load,
  and delete name-password pairs in an environment file.
  Only use this class if you are sure that the environment file is secure.
class_docstr_tok: ["This","module","provides","the","EnvFileSaver","class",",","which","is","used","to","save",",","load",",","and","delete","name-password","pairs","in","an","environment","file",".","Only","use","this","class","if","you","are","sure","that","the","environment","file","is","secure","."]
code: def delete(self, name: str):
      if os.path.exists(self.filename):
          with open(self.filename, "r") as f:
              data = yaml.safe_load(f)
              if data and name in data:
                  del data[name]
          with open(self.filename, "w") as f:
              yaml.safe_dump(data, f)
  
imports: import errno
  import functools
  import logging
  import os
  import pickle
  import signal
  import traceback
  from typing import Any, List
  import keyring
  import yaml
  from h2o_wave import Q, ui
  from keyring.errors import KeyringLocked, PasswordDeleteError
  from llm_studio.app_utils.config import default_cfg
  from llm_studio.app_utils.utils import get_database_dir, get_user_id
label_desc: Use image node_id 4 for calling the EnvFileSaver obj's underlying member method code with example usage: obj.delete(name) without return types