jupyter notebook用datasets下载cifar10错误

Exception: URL fetch failure on https://www.cs.toronto.edu/~kriz/cifar-10-python.tar.gz: None -- [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired 

解决方法：

https://stackoverflow.com/questions/50236117/scraping-ssl-certificate-verify-failed-error-for-http-en-wikipedia-org

只需两行代码

import ssl
ssl._create_default_https_context = ssl._create_unverified_context