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

PythonServer Side ProgrammingProgramming

To check whether the date in DateTimeIndex is the first day of the month, use the DateTimeIndex.is_month_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. The timezone is Australia/Adelaide −

datetimeindex = pd.date_range('2021-9-21 02:30:50', periods=6, tz='Australia/Adelaide', freq='5D')

Display DateTimeIndex −

print("DateTimeIndex...
", datetimeindex)

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

print("
Check whether the date in DateTimeIndex is the first day of the month...
",
datetimeindex.is_month_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('2021-9-21 02:30:50', periods=6, tz='Australia/Adelaide', freq='5D')

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

Output

This will produce the following code −

DateTimeIndex...
DatetimeIndex(['2021-09-21 02:30:50+09:30', '2021-09-26 02:30:50+09:30',
'2021-10-01 02:30:50+09:30', '2021-10-06 02:30:50+10:30',
'2021-10-11 02:30:50+10:30', '2021-10-16 02:30:50+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='5D')
DateTimeIndex frequency...
<5 * Days>

Check whether the date in DateTimeIndex is the first day of the month...
[False False True False False False]
raja
Updated on 18-Oct-2021 12:44:34

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