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Legal StudiesPython Pandas - 将 DateTimeIndex 中的时间转换为午夜
要将 DateTimeIndex 中的时间转换为午夜，请在 Pandas 中使用 DateTimeIndex.normalize()。
首先，导入所需的库 −
import pandas as pd
使用周期为 7，频率为 H（即小时）创建 DateTimeIndex −
datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=7, tz='Australia/Adelaide', freq='10H')
显示 DateTimeIndex −
print("DateTimeIndex...\n", datetimeindex)日期时间的时间组件被转换为午夜，即 00:00:00 −
print("\nNormalize (converted the time component to midnight)...\n",
datetimeindex.normalize())示例
以下为代码 −
import pandas as pd
# DatetimeIndex with period 7 and frequency as H i.e. hours
# The timezone is Australia/Adelaide
datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=7, tz='Australia/Adelaide', freq='10H')
# display DateTimeIndex
print("DateTimeIndex...\n", datetimeindex)
# display DateTimeIndex frequency
print("\nDateTimeIndex frequency...\n", datetimeindex.freq)
# The time component of the date-time is converted to midnight i.e. 00:00:00
print("\nNormalize (converted the time component to midnight)...\n",
datetimeindex.normalize())输出
将产生以下代码 −
DateTimeIndex... DatetimeIndex(['2021-10-30 02:30:50+10:30', '2021-10-30 12:30:50+10:30', '2021-10-30 22:30:50+10:30', '2021-10-31 08:30:50+10:30', '2021-10-31 18:30:50+10:30', '2021-11-01 04:30:50+10:30', '2021-11-01 14:30:50+10:30'], dtype='datetime64[ns, Australia/Adelaide]', freq='10H') DateTimeIndex frequency... <10 * Hours> Normalize (converted the time component to midnight)... DatetimeIndex(['2021-10-30 00:00:00+10:30', '2021-10-30 00:00:00+10:30', '2021-10-30 00:00:00+10:30', '2021-10-31 00:00:00+10:30', '2021-10-31 00:00:00+10:30', '2021-11-01 00:00:00+10:30', '2021-11-01 00:00:00+10:30'], dtype='datetime64[ns, Australia/Adelaide]', freq=None)
更新于： 18-Oct-2021
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