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Python Pandas - Return index locations of values between particular time of day in DateTimeIndex
To return index locations of values between particular time of day in DateTimeIndex, use the DateTimeIndex.indexer_between_time() method.
At first, import the required libraries −
import pandas as pd
Create a DatetimeIndex with period 5 and frequency as T i.e. minutes. The timezone is Australia/Adelaide −
datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=5, tz='Australia/Adelaide', freq='20T')
Display DateTimeIndex −
print("DateTimeIndex...\n", datetimeindex)
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('02:30:50','03:20:50'))
Example
Following is the code −
import pandas as pd # DatetimeIndex with period 5 and frequency as T i.e. minutes # The timezone is Australia/Adelaide datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=5, 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('02:30:50','03:20:50'))
Output
This will produce the following code −
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'], 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... [0 1 2]
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