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

PythonServer Side ProgrammingProgramming

To check whether the date in DateTimeIndex is the first day of the year, use the DateTimeIndex.is_year_start 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('2021-12-30 02:30:50', periods=6, tz='Australia/Adelaide', freq='1D')

Display DateTimeIndex −

print("DateTimeIndex...
", datetimeindex)

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

print("
Check whether the date in DateTimeIndex is the first day of the year...
",
datetimeindex.is_year_start)

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('2021-12-30 02:30:50', periods=6, tz='Australia/Adelaide', freq='1D')

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

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

# Check whether the date in DateTimeIndex is the first day of the year
print("
Check whether the date in DateTimeIndex is the first day of the year...
",
datetimeindex.is_year_start)

Output

This will produce the following code −

DateTimeIndex...
DatetimeIndex(['2021-12-30 02:30:50+10:30', '2021-12-31 02:30:50+10:30',
'2022-01-01 02:30:50+10:30', '2022-01-02 02:30:50+10:30',
'2022-01-03 02:30:50+10:30', '2022-01-04 02:30:50+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='D')
DateTimeIndex frequency...
<Day>

Check whether the date in DateTimeIndex is the first day of the year...
[False False True False False False]
raja
Updated on 18-Oct-2021 12:49:48

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