pandas.PeriodIndex.days_in_month

property PeriodIndex.days_in_month

该月份的天数。

例子

对于系列：

>>> period = pd.period_range('2020-1-1 00:00', '2020-3-1 00:00', freq='M')
>>> s = pd.Series(period)
>>> s
0   2020-01
1   2020-02
2   2020-03
dtype: period[M]
>>> s.dt.days_in_month
0    31
1    29
2    31
dtype: int64

对于 PeriodIndex:

>>> idx = pd.PeriodIndex(["2023-01", "2023-02", "2023-03"], freq="M")
>>> idx.days_in_month   # It can be also entered as `daysinmonth`
Index([31, 28, 31], dtype='int64')