NLTK POS标签 - 无法导出CSV

Question

我有一段时间我一直在使用的代码。我想知道是否有一种方法可以每行读取CSV文件（Twitter feed）并导出CSV中的输出。

我理想地希望每行提取名词术语，即在我的情况下是Twitter feed。

这是代码。对不起，我是Python的新手。

import nltk
essays = u"""text here"""
tokens = nltk.word_tokenize(essays)
tagged = nltk.pos_tag(tokens)
nouns = [word for word,pos in tagged 
	if (pos == 'NN' or pos == 'NNP' or pos == 'NNS' or pos == 'NNPS')]
downcased = [x.lower() for x in nouns]
joined = " ".join(downcased).encode('utf-8')
into_string = str(nouns)
output = open("output.txt", "w")
output.write(joined)
output.close()

Answer 1

（csv docs）https://docs.python.org/2/library/csv.html

import csv
all_nouns = []
with open('twitter_feed.csv', 'rb') as csvfile:
     tweetreader = csv.reader(csvfile, delimiter=',', quotechar='"')
     for tweet in tweetreader:
        tokens = nltk.word_tokenize(essays)
        tagged = nltk.pos_tag(tokens)
        nouns = [word for word,pos in tagged 
            if (pos == 'NN' or pos == 'NNP' or pos == 'NNS' or pos == 'NNPS')]
        downcased = [x.lower() for x in nouns]
        joined = ",".join(downcased).encode('utf-8')
        all_nouns.append(joined)
csv_file = csv.writer("nouns.csv")
csv_file.writerows(all_nouns)

我恐怕目前没有python进行测试你要。如果您需要更多帮助，或者我已经误解了，请告诉我。