How to add an empty column to a dataframe?

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Track title: CC B Schuberts Piano Sonata No 16 D

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Chapters
00:00 Question
00:25 Accepted answer (Score 706)
00:43 Answer 2 (Score 79)
01:57 Answer 3 (Score 66)
02:26 Answer 4 (Score 62)
02:57 Thank you

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Full question
https://stackoverflow.com/questions/1632...

Answer 1 links:
[this associated question]: https://stackoverflow.com/questions/3092...
[method of pandas]: http://pandas.pydata.org/pandas-docs/sta...

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Tags
#python #pandas

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