要返回 DateTimeIndex 中特定时间之间值的索引位置,请使用该方法。将include_start参数设置为True以包含开始时间。DateTimeIndex.indexer_between_time()
首先,导入所需的库 -
import pandas as pd
创建一个日期时间索引,周期为 7,频率为 T 即分钟 -
datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=7, tz='Australia/Adelaide', freq='20T')
显示日期时间索引 -
print("DateTimeIndex...\n", datetimeindex)
显示一天中特定时间之间值的索引位置。“start_time”设置为“02:30:50”,“end_time”设置为“03:20:50”。将 include_start 参数设置为 True -
print("\nIndex locations of values between particular time of day...\n", datetimeindex.indexer_between_time('03:10:50','03:50:50', include_start = True))
以下是代码 -
import pandas as pd # DatetimeIndex with period 7 and frequency as T i.e. minutes # The timezone is Australia/Adelaide datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=7, tz='Australia/Adelaide', freq='20T') # display DateTimeIndex print("DateTimeIndex...\n", datetimeindex) # display DateTimeIndex frequency print("\nDateTimeIndex frequency...\n", datetimeindex.freq) # display index locations of values at particular time of day i.e. 03:10:50 here print("\nIndex locations of values at particular time of day...\n", datetimeindex.indexer_at_time('2021-10-30 03:10:50')) # display index locations of values between particular time of day # The "start_time" is set '02:30:50' and "end_time" '03:20:50' print("\nIndex locations of values between particular time of day...\n", datetimeindex.indexer_between_time('03:10:50','03:50:50', include_start = True))输出结果
这将产生以下代码 -
DateTimeIndex... DatetimeIndex(['2021-10-30 02:30:50+10:30', '2021-10-30 02:50:50+10:30', '2021-10-30 03:10:50+10:30', '2021-10-30 03:30:50+10:30', '2021-10-30 03:50:50+10:30', '2021-10-30 04:10:50+10:30', '2021-10-30 04:30:50+10:30'], dtype='datetime64[ns, Australia/Adelaide]', freq='20T') DateTimeIndex frequency... <20 * Minutes> Index locations of values at particular time of day... [2] Index locations of values between particular time of day... [2 3 4]