/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/base64.py", line 87, in b64decode我尝试在字符串上再次使用base64的‘b64encode’,但是它返回了一个错误。/3.6.5/Frameworks/
in word_tokenize(text) if i not in stopset and i not in string.punctuation]
File "/usr/local/lib/python2.7File "/usr/local/lib/python2.7/dist-packages/nltk/tokenize/punkt.py", line 586, in _tokenize_words