Python词典中两词短语的扫描

Question

我尝试使用Python字典对象来帮助将输入字符串转换为其他单词或短语。我已经成功地从输入中翻译出单个单词，但我似乎不知道如何翻译多个单词短语。在

示例：

sentence = input("Please enter a sentence: ")
myDict = {"hello": "hi","mean adult":"grumpy elder", ...ect}

如果用户输入hello mean adult作为输入，我如何返回hi grumpy elder？在

Answer 1

这将检查每个单词以及两个单词的短语，使用当前单词之前和之后的单词来生成短语：

myDict = {"hello": "hi",
          "fast car": "quick ride"}
sentence = input("Please enter a sentence: ")
words = sentence.split()
for i, word in enumerate(words):
    if word in myDict:
        print myDict.get(word)
        continue
    if i:
        phrase = ' '.join([words[i-1], word])
        if phrase1 in myDict:
            print myDict.get(phrase)
            continue
    if i < len(words)-1:
        phrase = ' '.join([word, words[i+1])
        if phrase in myDict:
            print myDict.get(phrase)
            continue