pandas.Series.dt

系列。dt ( )

Series 值的 datetimelike 属性的访问器对象。

例子

>>> seconds_series = pd.Series(pd.date_range("2000-01-01", periods=3, freq="s"))
>>> seconds_series
0   2000-01-01 00:00:00
1   2000-01-01 00:00:01
2   2000-01-01 00:00:02
dtype: datetime64[ns]
>>> seconds_series.dt.second
0    0
1    1
2    2
dtype: int32

>>> hours_series = pd.Series(pd.date_range("2000-01-01", periods=3, freq="h"))
>>> hours_series
0   2000-01-01 00:00:00
1   2000-01-01 01:00:00
2   2000-01-01 02:00:00
dtype: datetime64[ns]
>>> hours_series.dt.hour
0    0
1    1
2    2
dtype: int32

>>> quarters_series = pd.Series(pd.date_range("2000-01-01", periods=3, freq="QE"))
>>> quarters_series
0   2000-03-31
1   2000-06-30
2   2000-09-30
dtype: datetime64[ns]
>>> quarters_series.dt.quarter
0    1
1    2
2    3
dtype: int32

返回像原始系列一样索引的系列。如果 Series 不包含类似日期时间的值，则会引发 TypeError。