pandas.tseries.offsets

Class name	Description
DateOffset	Generic offset class, defaults to 1 calendar day
BDay	business day (weekday)
CDay	这个可以设置特定的假期
Week	one week, optionally anchored on a day of the week
WeekOfMonth	the x-th day of the y-th week of each month
LastWeekOfMonth	the x-th day of the last week of each month
MonthEnd	calendar month end
MonthBegin	calendar month begin
BMonthEnd	business month end
BMonthBegin	business month begin
CBMonthEnd	custom business month end
CBMonthBegin	custom business month begin
SemiMonthEnd	15th (or other day_of_month) and calendar month end
SemiMonthBegin	15th (or other day_of_month) and calendar month begin
QuarterEnd	calendar quarter end
QuarterBegin	calendar quarter begin
BQuarterEnd	business quarter end
BQuarterBegin	business quarter begin
FY5253Quarter	retail (aka 52-53 week) quarter
YearEnd	calendar year end
YearBegin	calendar year begin
BYearEnd	business year end
BYearBegin	business year begin
FY5253	retail (aka 52-53 week) year
BusinessHour	可以自己设置工作时间
CustomBusinessHour	custom business hour
Hour	one hour
Minute	one minute
Second	one second
Milli	one millisecond
Micro	one microsecond
Nano	one nanosecond

from pandas.tseries.offsets import *
d = datetime(2008, 8, 18, 9, 0)
In [106]: d + DateOffset(months=4, days=5)
Out[106]: Timestamp('2008-12-23 09:00:00')
In [107]: d - 5 * BDay()
Out[107]: Timestamp('2008-08-11 09:00:00')In [108]: d + BMonthEnd()
Out[108]: Timestamp('2008-08-29 09:00:00')In [109]: d
Out[109]: datetime.datetime(2008, 8, 18, 9, 0)In [110]: offset = BMonthEnd()In [111]: offset.rollforward(d)
Out[111]: Timestamp('2008-08-29 09:00:00')In [112]: offset.rollback(d)
Out[112]: Timestamp('2008-07-31 09:00:00')

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