pandas.tseries.offsets.SemiMonthBegin#

class pandas.tseries.offsets.SemiMonthBegin#

每月两个 DateOffset，分别在月初和 day_of_month 重复。

此偏移量将日期移动到月份的第一天和指定的额外一天（通常默认为 15 日），这在双月处理发生在固定日期时很有用。

属性

`n`	Return the count of the number of periods.
`normalize`	Return boolean whether the frequency can align with midnight.
`day_of_month`	Return the day of the month for the semi-monthly offset.

另请参阅

示例

>>> ts = pd.Timestamp(2022, 1, 1)
>>> ts + pd.offsets.SemiMonthBegin()
Timestamp('2022-01-15 00:00:00')

属性

`base`	Returns a copy of the calling offset object with n=1 and all other attributes equal.
`day_of_month`	Return the day of the month for the semi-monthly offset.
`freqstr`	Return a string representing the frequency.
`kwds`	Return a dict of extra parameters for the offset.
`n`	Return the count of the number of periods.
`name`	Return a string representing the base frequency.
`nanos`	Returns an integer of the total number of nanoseconds for fixed frequencies.
`normalize`	Return boolean whether the frequency can align with midnight.
`rule_code`

Methods

`copy`()	Return a copy of the frequency.
`is_month_end`(ts)	Return boolean whether a timestamp occurs on the month end.
`is_month_start`(ts)	Return boolean whether a timestamp occurs on the month start.
`is_on_offset`(dt)	Return boolean whether a timestamp intersects with this frequency.
`is_quarter_end`(ts)	Return boolean whether a timestamp occurs on the quarter end.
`is_quarter_start`(ts)	Return boolean whether a timestamp occurs on the quarter start.
`is_year_end`(ts)	Return boolean whether a timestamp occurs on the year end.
`is_year_start`(ts)	Return boolean whether a timestamp occurs on the year start.
`rollback`(dt)	Roll provided date backward to next offset only if not on offset.
`rollforward`(dt)	Roll provided date forward to next offset only if not on offset.