code: def save(self, list_file):
      
      bob.io.base.create_directories_safe(os.path.dirname(list_file))
      with open(list_file, 'w') as f:
        for i in range(len(self.image_paths)):
          f.write(self.image_paths[i])
          for bbx in self.bounding_boxes[i]:
            f.write("\t[%f %f %f %f]" % (bbx.top_f, bbx.left_f, bbx.size_f[0], bbx.size_f[1]))
          f.write("\n")
docs: Saves the current list of annotations to the given file.
  
      **Parameters:**
  
      ``list_file`` : str
        The name of a list file to write the currently stored list into