前情提要：
本项目需要从Facebook上提取用户的基本信息，是从git上下载下来的。目前想要完成复现。
遇到问题：
pip install scrapy
ERROR: Could not find a version that satisfies the requirement scrapy (from versions: none)
ERROR: No matching distribution found for scrapy
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host=‘pypi.org’, port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(“Can’t connect to HTTPS URL because the SSL module is not available.”)) - skipping
如何解决：
pip install scrapy -i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com
后增加的命令行内容为ssl证书镜像。
