在具有多个实例的句子中搜索两个单词字符串的索引(Python)

def search_word_indices(sentences, word1, word2):
    result = []
    for sentence in sentences:
        words = sentence.split()
        left, right = 0, len(words) - 1
        index1, index2 = -1, -1
        while left <= right:
            if words[left] == word1:
                index1 = left
            if words[right] == word2:
                index2 = right
            if index1 != -1 and index2 != -1:
                break
            if words[left] < word1:
                left += 1
            else:
                right -= 1
        result.append([index1, index2])
    return result