code: def is_child(child_path, parent_path):
          
          parent_dir = os.path.join(parent_path, '')
          child_dir = os.path.join(child_path, '')
          return child_dir.startswith(parent_dir)
docs: Is parent_path a parent(or grandparent) directory of child_path.
          :param child_path: str: remote file path
          :param parent_path: str: remote file path
          :return: bool: True when parent_path is child_path's parent