NLTK中的Python一致性命令

问题描述

我对NLTK中的Python一致性命令有疑问.首先，我举了一个简单的例子:

I have a question regarding Python concordance command in NLTK. First, I came through an easy example:

from nltk.book import *

text1.concordance("monstrous")

效果很好.现在，我有自己的.txt文件，我想执行相同的命令.我有一个名为"textList"的列表，想找到单词"CNA"，所以我输入了命令

which worked just fine. Now, I have my own .txt file and I would like to perform the same command. I have a list called "textList" and want to find the word "CNA" so I put command

textList.concordance('CNA') 

但是，我得到了错误

AttributeError: 'list' object has no attribute 'concordance'. 

在示例中，text1不是列表吗?我不知道这是怎么回事.

In the example, is the text1 NOT a list? I wonder what is going on here.

推荐答案

.concordance()是特殊的nltk函数.因此，您不能只在任何python对象(例如您的列表)上调用它.

.concordance() is a special nltk function. So you can't just call it on any python object (like your list).

更具体地说:.concordance()是 Text中的方法nltk的类别

More specifically: .concordance() is a method in the Text class of nltk

基本上，如果要使用.concordance()，则必须首先实例化Text对象，然后在该对象上对其进行调用.

Basically, if you want to use the .concordance(), you have to instantiate a Text object first, and then call it on that object.

文本

import nltk.corpus  
from nltk.text import Text  
moby = Text(nltk.corpus.gutenberg.words('melville-moby_dick.txt'))

.concordance()

在指定的上下文窗口中打印单词的一致性.单词匹配不区分大小写.

Print a concordance for word with the specified context window. Word matching is not case-sensitive.

所以我想像这样的事情会起作用(未经测试)

So I imagine something like this would work (not tested)

import nltk.corpus  
from nltk.text import Text  
textList = Text(nltk.corpus.gutenberg.words('YOUR FILE NAME HERE.txt'))
textList.concordance('CNA')

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