Odd truth result with in and ==

[Serhiy Storchaka]

21.11.18 22:17, Cameron Simpson пише:
> Can someone show me a real world, or failing that - sane looking, 
> chained comparison using "in"?

     s[0] == s[-1] in '\'"'

Tests that string s starts and ends with a single or double quote.

It can be also used with sets:

     elem in set1 <= set2