python - 我正在尝试用 python 压缩文件，但似乎很挣扎

Question

我试图获取一个文件，以便将一个句子以数字形式保存到列表中形式例如

这是一个句子，很好= 1,2,3,4,5,2,6

看，is = 2 并如上所示重复

这是我的代码的一部分...

j = sentence

for position, word in enumerate(sentence):
    if word in word_dictionary:
        word_dictionary.append(position)

求助，谢谢

Answer 1

这应该做你想做的:

word_dictionary = {} # start with empty dictionary
highest = 0 # and set our counter to 0
sentence = "this is a sentence and is good".split()
compressed = []
for word in sentence:
    if word not in word_dictionary:
        highest += 1 # new word, so we need a new number
    # append the word number, and if it's not in the dictionary,
    # set it, too
    compressed.append(word_dictionary.setdefault(word, highest))

这正确地将 compressed 设置为 [1, 2, 3, 4, 5, 2, 6]。