Python Pandas - Indicate whether the date in DateTimeIndex is the last day of the year

To check whether the date in DateTimeIndex is the last day of the year, use the DateTimeIndex.is_year_end property.

At first, import the required libraries −

import pandas as pd

Create a DatetimeIndex with period 6 and frequency as D i.e. days −

datetimeindex = pd.date_range('2021-12-25 02:30:50', periods=6, tz='Australia/Adelaide', freq='2D')

Display DateTimeIndex −

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

Check whether the date in DateTimeIndex is the last day of the year −

print("\nCheck whether the date in DateTimeIndex is the last day of the year...\n", datetimeindex.is_year_end)

Example

Following is the code −

import pandas as pd

# DatetimeIndex with period 6 and frequency as D i.e. days
# The timezone is Australia/Adelaide
datetimeindex = pd.date_range('2021-12-25 02:30:50', periods=6, tz='Australia/Adelaide', freq='2D')

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

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

# Check whether the date in DateTimeIndex is the last day of the year
print("\nCheck whether the date in DateTimeIndex is the last day of the year...\n",
datetimeindex.is_year_end)

Output

This will produce the following code −

DateTimeIndex...
DatetimeIndex(['2021-12-25 02:30:50+10:30', '2021-12-27 02:30:50+10:30',
'2021-12-29 02:30:50+10:30', '2021-12-31 02:30:50+10:30',
'2022-01-02 02:30:50+10:30', '2022-01-04 02:30:50+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='2D')
DateTimeIndex frequency...
<2 * Days>

Check whether the date in DateTimeIndex is the last day of the year...
[False False False True False False]