本文整理匯總了Python中nltk.corpus.treebank.files方法的典型用法代碼示例。如果您正苦於以下問題：Python treebank.files方法的具體用法？Python treebank.files怎麽用？Python treebank.files使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類nltk.corpus.treebank的用法示例。
在下文中一共展示了treebank.files方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: demo
# 需要導入模塊: from nltk.corpus import treebank [as 別名]
# 或者: from nltk.corpus.treebank import files [as 別名]
def demo():
"""
A demonstration of the porter stemmer on a sample from
the Penn Treebank corpus.
"""
from nltk.corpus import treebank
from nltk import stem
stemmer = stem.PorterStemmer()
orig = []
stemmed = []
for item in treebank.files()[:3]:
for (word, tag) in treebank.tagged_words(item):
orig.append(word)
stemmed.append(stemmer.stem(word))
# Convert the results to a string, and word-wrap them.
results = ' '.join(stemmed)
results = re.sub(r"(.{,70})\s", r'\1\n', results+' ').rstrip()
# Convert the original to a string, and word wrap it.
original = ' '.join(orig)
original = re.sub(r"(.{,70})\s", r'\1\n', original+' ').rstrip()
# Print the results.
print('-Original-'.center(70).replace(' ', '*').replace('-', ' '))
print(original)
print('-Results-'.center(70).replace(' ', '*').replace('-', ' '))
print(results)
print('*'*70)
##--NLTK--