code: def load_from_file(filepath, format_=FileFormat.py, update_data_callback=None,
                     disable_memcache=False):
      
      filepath = os.path.realpath(filepath)
      cache_filepath = file_cache.get(filepath)
  
      if cache_filepath:
          # file has been written by this process, read it from /tmp to avoid
          # potential write-then-read issues over NFS
          return _load_file(filepath=cache_filepath,
                            format_=format_,
                            update_data_callback=update_data_callback,
                            original_filepath=filepath)
      elif disable_memcache:
          return _load_file(filepath=filepath,
                            format_=format_,
                            update_data_callback=update_data_callback)
      else:
          return _load_from_file(filepath=filepath,
                                 format_=format_,
                                 update_data_callback=update_data_callback)
docs: Load data from a file.
  
      Note:
          Any functions from a .py file will be converted to `SourceCode` objects.
  
      Args:
          filepath (str): File to load.
          format_ (`FileFormat`): Format of file contents.
          update_data_callback (callable): Used to change data before it is
              returned or cached.
          disable_memcache (bool): If True, don't r/w to memcache.
  
      Returns:
          dict.