How do I compare a row value in one column to all other rows in a different column within a group?

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Chapters
00:00 Question
02:23 Accepted answer (Score 3)
03:31 Answer 2 (Score 0)
03:49 Thank you

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Full question
https://stackoverflow.com/questions/5734...

Accepted answer links:
[GroupBy.apply]: http://pandas.pydata.org/pandas-docs/sta...

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Tags
#python #pandas #pandasgroupby

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