如果我们有值'cat'，我想要子串'at'（需要删除第一个和最后一个字母）。我们如何在Nunjucks模板中实现这一目标？
答案 0 :(得分：1)
您可以使用JavaScript import nltk
def extract_entity_names(t):
entity_names = []
if hasattr(t, 'label') and t.label:
if t.label() == 'NE':
entity_names.append(' '.join([child[0] for child in t]))
else:
for child in t:
entity_names.extend(extract_entity_names(child))
return entity_names
with open('sample.txt', 'r') as f:
for line in f:
sentences = nltk.sent_tokenize(line)
tokenized_sentences = [nltk.word_tokenize(sentence) for sentence in sentences]
tagged_sentences = [nltk.pos_tag(sentence) for sentence in tokenized_sentences]
chunked_sentences = nltk.ne_chunk_sents(tagged_sentences, binary=True)
entities = []
for tree in chunked_sentences:
entities.extend(extract_entity_names(tree))
print(entities)
方法执行此操作，如下所示：
slice