code: def set_key(dotenv_path, key_to_set, value_to_set, quote_mode='always', verbose=False):
      
      key_to_set = str(key_to_set)
      value_to_set = str(value_to_set).strip("'").strip('"')
      if not os.path.exists(dotenv_path):
          if verbose:
              warnings.warn(f"Can't write to {dotenv_path}, it doesn't exist.")
          return None, key_to_set, value_to_set
  
      dotenv_as_dict = OrderedDict(parse_dotenv(dotenv_path))
      dotenv_as_dict[key_to_set] = value_to_set
      success = flatten_and_write(dotenv_path, dotenv_as_dict, quote_mode)
  
      return success, key_to_set, value_to_set
docs: Adds or Updates a key/value to the given .env
  
      If the .env path given doesn't exist, fails instead of risking creating
      an orphan .env somewhere in the file-system
  
      :param dotenv_path: env path
      :param key_to_set: key
      :param value_to_set: value
      :param quote_mode: quote value in .env file
      :param verbose: verbosity flag, raise warning if path does not exist
      :return: tuple (fail/win, key, value)