Get Last Day of the Month in Python

Question

Is there a way using Python's standard library to easily determine (i.e. one function call) the last day of a given month?

If the standard library doesn't support that, does the dateutil package support this?

Answer 1

you can use relativedelta https://dateutil.readthedocs.io/en/stable/relativedelta.html month_end = <your datetime value within the month> + relativedelta(day=31) that will give you the last day.

Answer 2

I hope,It's usefull for very much..Try it on this way..we must need import some package

import time
from datetime import datetime, date
from datetime import timedelta
from dateutil import relativedelta

  start_date = fields.Date(
        string='Start Date', 
        required=True,
        ) 

    end_date = fields.Date(
        string='End Date', 
        required=True,
        )

    _defaults = {
        'start_date': lambda *a: time.strftime('%Y-%m-01'),
        'end_date': lambda *a: str(datetime.now() + relativedelta.relativedelta(months=+1, day=1, days=-1))[:10],
    }

Answer 3

Here is a solution based python lambdas:

next_month = lambda y, m, d: (y, m + 1, 1) if m + 1 < 13 else ( y+1 , 1, 1)
month_end  = lambda dte: date( *next_month( *dte.timetuple()[:3] ) ) - timedelta(days=1)

The next_month lambda finds the tuple representation of the first day of the next month, and rolls over to the next year. The month_end lambda transforms a date (dte) to a tuple, applies next_month and creates a new date. Then the "month's end" is just the next month's first day minus timedelta(days=1).