October 2019
Beginner to intermediate
674 pages
16h 43m
English
Content preview from Mastering pandas - Second Edition
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DateOffset and TimeDelta objects
A DateOffset object represents a change or offset in time. The key features of a DateOffset object are as follows:
- This can be added to/subtracted from a datetime object to obtain a shifted date.
- This can be multiplied by an integer (positive or negative) so that the increment can be applied multiple times.
- This has the rollforward and rollback methods to move a date forward to the next offset date or backward to the previous offset date.
Let's create some date objects using the datetime method in pandas:
In [371]: xmasDay=pd.datetime(2014,12,25) xmasDay Out[371]: datetime.datetime(2014, 12, 25, 0, 0) In [373]: boxingDay=xmasDay+pd.DateOffset(days=1) boxingDay Out[373]: Timestamp('2014-12-26 00:00:00', ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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