爬虫 — Scrapy 框架安装问题

整理几个关于安装 Scrapy 框架时会遇到的问题及解决方法。

1、

pip install typing-extensions==4.3.0 -i https://pypi.douban.com/simple

2、

pip install pyOpenSSL==22.0 -i https://pypi.douban.com/simple

3、

pip install cryptography==36.0.2 -i https://pypi.douban.com/simple

4、AttributeError: ‘SelectReactor’ object has no attribute ‘_handleSignals’

pip uninstall Twisted
pip install Twisted==22.10.0