this error comes IndexError: list index out of range

Question

这个程序是为了找出句子和单词之间的相似之处以及它们在同义词方面的相似之处我已经下载了 nltk，当我第一次编码时它是运行并且没有错误但是几天后我运行程序

import nltk
nltk.download('stopwords')
nltk.download('wordnet')
from nltk.tokenize import word_tokenize
from nltk.corpus import stopwords
from nltk.corpus import wordnet as wn

filtered_uploaded_sentences = []
uploaded_sentence_synset = []
database_word_synset = []

uploaded_doc_sentence=" The issue of text semantics, such as word semantics and sentence semantics has received increasing attentions in recent years. However, rare research focuses on the document-level semantic matching due to its complexity. Long documents usually have sophisticated structure and massive information, which causes hardship to measure their semantic similarity. The semantic similarity between words, sentences, texts, and documents is widely studied in various fields, including natural language processing, document semantic comparison, artificial intelligence, semantic web, and semantic search engines. "
database_word=["car","complete",'focus',"semantics"]

stopwords = stopwords.words('english')
uploaded_sentence_words_tokenized = word_tokenize(uploaded_doc_sentence)

#filtering the sentence and synset

for word in uploaded_sentence_words_tokenized:
    if word not in stopwords:      
        filtered_uploaded_sentences.append(word)
print (filtered_uploaded_sentences)

for sentences_are in filtered_uploaded_sentences:
    uploaded_sentence_synset.append(wn.synsets(sentences_are))
    
print(uploaded_sentence_synset)

#for finding similrity in the words

for databasewords in database_word:
    database_word_synset.append(wn.synsets(databasewords)[0])
    
print(database_word_synset)

索引错误：列表索引超出范围
当 uploaded_doc_sentence 是短句而使用长句时会出现此错误符合

的错误

check.append(wn.wup_similarity(数据,sen[0]))

我要比较句子和单词，结果存储。这种

#the similarity main function for words

for data in database_word_synset:
    for sen in uploaded_sentence_synset :
        check.append(wn.wup_similarity(data,sen[0]))
print(check)

Answer 1

问题是 uploaded_sentence_synset 中包含空列表。我不确定您要做什么，但请将最后一段代码修改为：

for data in database_word_synset:
    for sen in uploaded_sentence_synset:
        if sen:
            check.append(wn.wup_similarity(data, sen[0]))

如果没有 if-else 块，您实际上是在尝试索引列表的第一个元素，从而得到一个 IndexError.

Answer 2

通过从列表中删除空的 [] 列表块并将多维列表变成单维列表问题得到解决

list2 = [x for x in main_sen if x != []]
print(list2)
result=list()
for t in list2: 
    for x in t: 
        result.append(x)

this error comes IndexError: list index out of range

this error comes IndexError: list index out of range

python

nlp

nltk

similarity

wordnet