Jeff_Darker的博客

l1 = [1, 2, 3, 4, 5]l2 = [3, 4, 5, 6, 7]s1 = set(l1)s2 = set(l2)print(s1.__class__) # <class 'set'>print(s1 and s2) # {3, 4, 5, 6, 7}print(s2 and s1) # {1, 2, 3, 4, 5}print(s1 or s2) # {1, 2, 3, 4, 5}print(s2 or s1) # {3, 4, 5, 6, 7}pr.

转载自http://blog.sina.com.cn/s/blog_6acdaf6d01016a67.html(?: pattern)是非捕获型括号  匹配pattern，但不捕获匹配结果。(pattern )是捕获型括号。 匹配pattern，匹配pattern并捕获结果,自动获取组号(? pattern) 匹配pattern，  匹配pattern并捕获结果，设置name为

1.代码自身问题，pyspider是3.5之前的版本，py3.5之后添加关键字async。所以需要替换anaconda3/Lib/site-packages/pyspider/run.py，anaconda3/Lib/site-packages/pyspider/webui/app.py，anaconda3/Lib/site-packages/pyspider/fetcher/tornado_...