Python -指定语料库从谁的句子上执行一个功能？

Question

我从NLTK图书馆进口了所有的书籍，我只是想弄清楚如何定义语料库，然后再打印句子。

例如，如果我想打印文本3的第1句，那么文本4的第2句。

import nltk
from nltk.book import *
print(???)
print(???)

我尝试了以下几种组合，但这些组合不起作用：

print(text3.sent1)
print(text4.sent2)

print(sent1.text3)
print(sent2.text4)

print(text3(sent1))
print(text4(sent2))

我对python很陌生，所以这可能是一个基本的问题，但我似乎无法在其他地方找到解决办法。

非常感谢，提前！

Answer 1

你需要先把课文分成几个句子。

如果你已经有了text3和text4

from nltk.tokenize import sent_tokenize

sents = sent_tokenize(text3)
print(sents[0])  # the first sentence in the list is at position 0

sents = sent_tokenize(text4)
print(sents[1])  # the second sentence in the list is at position 1

print(text3[0])  # prints the first word of text3

您似乎同时需要一个NLTK教程和一个python教程。幸运的是，NLTK书两者都是。

Answer 2

简单的例子如下：

from nltk.tokenize import sent_tokenize

# List of sentences
sentences = "This is first sentence. This is second sentence. Let's try to tokenize the sentences. how are you? I am doing good"

# define function
def sentence_tokenizer(sentences):

    sentence_tokenize_list = sent_tokenize(sentences)

    print "tokenized sentences are = ", sentence_tokenize_list
    return sentence_tokenize_list

# call function 
tokenized_sentences = sentence_tokenizer(sentences)
# print first sentence
print tokenized_sentences[0]

希望这能有所帮助。