code: def from_pyfile(self, filename: str, silent: bool=False) -> None:
          
          file_path = self.root_path / filename
          try:
              spec = importlib.util.spec_from_file_location("module.name", file_path)  # type: ignore
              if spec is None:  # Likely passed a cfg file
                  parser = ConfigParser()
                  parser.optionxform = str  # type: ignore # Prevents lowercasing of keys
                  with open(file_path) as file_:
                      config_str = '[section]\n' + file_.read()
                  parser.read_string(config_str)
                  self.from_mapping(parser['section'])
              else:
                  module = importlib.util.module_from_spec(spec)
                  spec.loader.exec_module(module)  # type: ignore
                  self.from_object(module)
          except (FileNotFoundError, IsADirectoryError):
              if not silent:
                  raise
docs: Load the configuration from a Python cfg or py file.
  
          See Python's ConfigParser docs for details on the cfg format.
          It is a common practice to load the defaults from the source
          using the :meth:`from_object` and then override with a cfg or
          py file, for example
  
          .. code-block:: python
  
              app.config.from_object('config_module')
              app.config.from_pyfile('production.cfg')
  
          Arguments:
              filename: The filename which when appended to
                  :attr:`root_path` gives the path to the file