安装后用不起
报错
>>> import nltk
>>> nltk.download('punkt')
[nltk_data] Error loading punkt: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed:
[nltk_data] unable to get local issuer certificate (_ssl.c:997)>
False
>>>
哈哈，在网上找到这个代码