Hi list,
Can anyone - maybe one of the Python language core team, or someone with
knowledge of the internals of Python - can explain why this code works, and
whether the different occurrences of the name x in the expression, are in
different scopes or not? :
x = [[1,2], [3,4], [5,6]]
[x for x in x for x in x]
I saw this on a Hacker News thread about Python, and here is a post I wrote
that gives more details about it, including relevant links, how I found that it
can be extended to a triply-nested list, and my thoughts about the scope issue:
http://jugad2.blogspot.in/2014/03/flatten-list-of-lists-with-list.html
A few people commented about it, both on my blog, and on the Python Reddit
where I also submitted my post, but I'm not sure I'm convinced of their
reasoning or understand it, hence posting the question here.
Thanks,
Vasudev Ram
www.dancingbison.com
jugad2.blogspot.com
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