列表Python的索引

Question

我试图找到如何在Python中打印列表中的单词索引。如果句子是“Hello world world hello name”，我希望它打印列表“1,2,2,1,3”）

我删除了所有重复的单词：

sentence = input("Enter").lower()
words = sentence.split()
counts = []
for word in words:
    if word not in counts:
       counts.append(word)
print(counts)

但是我还需要使用数组

来获取句子的索引

Answer 1

如果你希望索引是我在句子中看到的＆＃34; n唯一单词＆＃34;那么这段代码会产生这个：

sentence = "Hello world world hello name".lower()
first_occurence = dict()
for pos, word in enumerate(sentence.split(" ")):
    if word not in first_occurence:
        first_occurence[word] = len(first_occurence)

res = [first_occurence[word] + 1 for word in sentence.split(' ')]

结果：[1, 2, 2, 1, 3]