Python Pandas - 从具有特定时间序列频率的 DateTimeIndex 中提取纳秒


若要从具有特定时间序列频率的 DateTimeIndex 中提取纳秒,请使用 DateTimeIndex.nanosecond 属性。

首先,导入必需的库 −

import pandas as pd

创建一个周期为 6、频率为 ns(即纳秒)的 DatetimeIndex −

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

显示 DateTimeIndex −

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

获取纳秒 −

print("\nGetting the nanoseconds..\n",datetimeindex.nanosecond)

案例

以下为代码 −

import pandas as pd

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

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

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

# get the nanoseconds
print("\nGetting the nanoseconds..\n",datetimeindex.nanosecond)

输出

这将产生以下代码 −

DateTimeIndex...
DatetimeIndex([ '2021-10-20 02:30:50+11:00',
'2021-10-20 02:30:50.000000001+11:00',
'2021-10-20 02:30:50.000000002+11:00',
'2021-10-20 02:30:50.000000003+11:00',
'2021-10-20 02:30:50.000000004+11:00',
'2021-10-20 02:30:50.000000005+11:00'],
dtype='datetime64[ns, Australia/Sydney]', freq='N')
DateTimeIndex frequency...
<Nano>

Getting the nanoseconds..
Int64Index([0, 1, 2, 3, 4, 5], dtype='int64')

更新时间: 2021 年 10 月 18 日

515 次浏览

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