code: def load_any_file(filename):
      
      import f311
  
      # Splits attempts using ((binary X text) file) criterion
      if a99.is_text_file(filename):
          return load_with_classes(filename, f311.classes_txt())
      else:
          return load_with_classes(filename, f311.classes_bin())
docs: Attempts to load filename by trial-and-error
  
      Returns:
          file: A DataFile descendant, whose specific class depends on the file format detected, or None
          if the file canonot be loaded