matcher.py 文件源码

 复制代码def get_object(tree):
    """Get the object in the tree object.

    Method should remove unnecessary letters and words::

        the
        a/an
        's

    Args:
        tree (Tree): Parsed tree structure
    Returns:
        Resulting string of tree ``(Ex: "red car")``
    """
    if isinstance(tree, Tree):
        if tree.label() == 'DT' or tree.label() == 'POS':
            return ''
        words = []
        for child in tree:
            words.append(get_object(child))
        return ' '.join([_f for _f in words if _f])
    else:
        return tree