Python Pandas——使用特定的时间序列频率从 DateTimeIndex 中提取秒


要从特定时间序列频率的 DateTimeIndex 中提取秒,请使用 DateTimeIndex.second 属性。

首先,导入所需的库 −

import pandas as pd

用周期为 6、频率为 S(即秒)创建 DatetimeIndex。时区为澳大利亚/悉尼 −

datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=6, tz='Australia/Sydney', freq='S')

显示 DateTimeIndex −

print("DateTimeIndex...\n", datetimeindex)

获取秒 −

print("\nGetting the seconds..\n",datetimeindex.second)

示例

以下是代码 −

import pandas as pd

# DatetimeIndex with period 6 and frequency as S i.e. seconds
# The timezone is Australia/Sydney
datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=6, tz='Australia/Sydney', freq='S')

# display DateTimeIndex
print("DateTimeIndex...\n", datetimeindex)

# display DateTimeIndex frequency
print("DateTimeIndex frequency...\n", datetimeindex.freq)

# get the seconds
print("\nGetting the seconds..\n",datetimeindex.second)

输出

这将生成以下代码 −

DateTimeIndex...
DatetimeIndex(['2021-10-20 02:30:50+11:00', '2021-10-20 02:30:51+11:00',
'2021-10-20 02:30:52+11:00', '2021-10-20 02:30:53+11:00',
'2021-10-20 02:30:54+11:00', '2021-10-20 02:30:55+11:00'],
dtype='datetime64[ns, Australia/Sydney]', freq='S')
DateTimeIndex frequency...
<Second>

Getting the seconds..
Int64Index([50, 51, 52, 53, 54, 55], dtype='int64')

更新于:18-Oct-2021

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