Extract first item of each sublist

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Music by Eric Matyas
https://www.soundimage.org
Track title: Quirky Dreamscape Looping

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Chapters
00:00 Question
00:33 Accepted answer (Score 247)
00:47 Answer 2 (Score 101)
01:20 Answer 3 (Score 29)
02:48 Answer 4 (Score 15)
04:18 Thank you

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Full question
https://stackoverflow.com/questions/2505...

Accepted answer links:
[list comprehension]: https://docs.python.org/2/tutorial/datas...

Answer 4 links:
https://docs.python.org/3/library/operat...

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Tags
#python #list #nested

#avk47