安装Anaconda 时，未勾选自动配置环境变量

手动配置的时候，只填写了E:\program\Anaconda\Scripts;

没有配置下面两项

E:\program\Anaconda\Library\bin;

E:\program\Anaconda\

结果命令下 conda upgrade --all 出现

Solving environment: failed

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://mirrors.tuna.tsingh

a.edu.cn/anaconda/pkgs/main/noarch/repodata.json>

Elapsed: -

An HTTP error occurred when trying to retrieve this URL.

HTTP errors are often intermittent, and a simple retry will get you on your way

SSLError(MaxRetryError('HTTPSConnectionPool(host=\'mirrors.tuna.tsinghua.edu.cn

', port=443): Max retries exceeded with url: /anaconda/pkgs/main/noarch/repodat

.json (Caused by SSLError("Can\'t connect to HTTPS URL because the SSL module i

not available."))'))

网上搜索，答案大多为：更换为清华源、提示未安装oppensll，尝试后依然报错

最后，看到一篇文章介绍Anaconda为集成包，不会出现一些低级，重新配置了环境变量，结果好了，以此记录下！

此后conda install scrapy 安装成功  但是scrapy 报错 

from cryptography.hazmat.bindings._openssl import ffi, lib ImportError: DLL load failed: 操作系统无法运行 %1

结果 pip install -I cryptography  最后scrapy成功！