Python Pandas – 对 TimeDeltaIndex 进行秒频率的向下取整操作
要对 TimeDeltaIndex 进行秒频率的向下取整操作,请使用 TimeDeltaIndex.floor() 方法。对于秒频率,请使用具有值 ‘S’ 的 freq 参数。
首先,导入所需的库-
import pandas as pd
创建一个 TimeDeltaIndex 对象。 我们使用 ‘data’ 参数设置 timedelta-like 数据-
tdIndex = pd.TimedeltaIndex(data =['5 day 8h 20min 35us 45ns', '+17:42:19.999999',
'7 day 3h 08:16:02.000055', '+22:35:25.999999'])
显示 TimedeltaIndex –
print("TimedeltaIndex...\n", tdIndex)
对具有秒频率的 TimeDeltaIndex 日期进行向下取整操作。 对于秒频率,我们使用 ‘S’ –
print("\nPerforming Floor operation with seconds frequency...\n",
tdIndex.floor(freq='S'))
示例
以下是代码-
import pandas as pd
# 创建一个 TimeDeltaIndex 对象
# 我们使用 'data' 参数设置 timedelta-like 数据
tdIndex = pd.TimedeltaIndex(data =['5 day 8h 20min 35us 45ns', '+17:42:19.999999',
'7 day 3h 08:16:02.000055', '+22:35:25.999999'])
# 显示 TimedeltaIndex
print("TimedeltaIndex...\n", tdIndex)
# 返回 TimeDeltas 组件的 DataFrame
print("\nThe Dataframe of the components of TimeDeltas...\n", tdIndex.components)
# 对具有秒频率的 TimeDeltaIndex 日期进行向下取整操作
# 对于秒频率,我们使用 'S'
print("\nPerforming Floor operation with seconds frequency...\n",
tdIndex.floor(freq='S'))
输出
这会产生以下代码-
TimedeltaIndex...
TimedeltaIndex(['5 days 08:20:00.000035045', '0 days 17:42:19.999999',
'7 days 11:16:02.000055', '0 days 22:35:25.999999'],
dtype='timedelta64[ns]', freq=None)
The Dataframe of the components of TimeDeltas...
days hours minutes seconds milliseconds microseconds nanoseconds
0 5 8 20 0 0 35 45
1 0 17 42 19 999 999 0
2 7 11 16 2 0 55 0
3 0 22 35 25 999 999 0
Performing Floor operation with seconds frequency...
TimedeltaIndex(['5 days 08:20:00', '0 days 17:42:19', '7 days 11:16:02',
'0 days 22:35:25'],
dtype='timedelta64[ns]', freq=None)