Macbook Air 10.5 Yosemite で Python 2.7 を実行しています。textblob のインストールでこの問題が発生しています。何をすべきか？
$ pip install -U textblob //no errors
$ python -m textblob.download_corpora
[nltk_data] Error loading brown: <urlopen error [SSL:
[nltk_data]dsaffdsa CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:661)>
[nltk_data] Error loading punkt: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:661)>
[nltk_data] Error loading wordnet: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:661)>
[nltk_data] Error loading averaged_perceptron_tagger: <urlopen error
[nltk_data] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify
[nltk_data] failed (_ssl.c:661)>
[nltk_data] Error loading conll2000: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:661)>
[nltk_data] Error loading movie_reviews: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:661)>
Finished.