来自nltk的函数bigrams返回以下消息,
即使导入nltk并且其他功能正在运行.有任何想法吗？谢谢.
>>> import nltk
>>> nltk.download()
showing info http://www.nltk.org/nltk_data/
True
>>> from nltk import bigrams
>>> bigrams(['more', 'is', 'said', 'than', 'done'])
<generator object bigrams at 0x0000000002E64240>