Python Pandas - 從具有特定時間序列頻率的 DateTimeIndex 中提取納秒
若要從具有特定時間序列頻率的 DateTimeIndex 中提取納秒,請使用 DateTimeIndex.nanosecond 屬性。
首先,匯入必需的庫 −
import pandas as pd
建立一個週期為 6、頻率為 ns(即納秒)的 DatetimeIndex −
datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=6, tz='Australia/Sydney', freq='ns')
顯示 DateTimeIndex −
print("DateTimeIndex...\n", datetimeindex)獲取納秒 −
print("\nGetting the nanoseconds..\n",datetimeindex.nanosecond)
案例
以下為程式碼 −
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)輸出
這將產生以下程式碼 −
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')
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