finding last business day of a month in python

问题

I'm trying to find last business day of of the month. I wrote the code below for that and it works fine but I was wondering if there is a cleaner way of doing it?

from  datetime import date,timedelta
import datetime
import calendar

today=datetime.date.today()

last = today.replace(day=calendar.monthrange(today.year,today.month)[1])

if last.weekday()<5:
    print last

else:
    print last-timedelta(days=1+last.weekday()-5)

Thanks in advance!

回答1:

I use the following:

from pandas.tseries.offsets import BMonthEnd
from datetime import date

d=date.today()

offset = BMonthEnd()

#Last day of current month
offset.rollforward(d)

#Last day of previous month
offset.rollback(d)

回答2:

Let's say you want to get the last business days of the month up-to the end of the next two years, the following will work.

   import pandas as pd
   import datetime

   start = datetime.date.today()
   end = datetime.date(start.year+2, 12, 31)
   bussiness_days_rng =pd.date_range(start, end, freq='BM')

回答3:

You can use Pandas to get business days. Refer http://pandas.pydata.org/pandas-docs/stable/timeseries.html

Also you can refer this https://pypi.python.org/pypi/business_calendar/ for simple business days calculation.

回答4:

I use this for the first business day of the month but it can be used for last business day of the month as well:

import time
import datetime
from pandas.tseries.holiday import USFederalHolidayCalendar
from pandas.tseries.offsets import CustomBusinessDay
from dateutil.relativedelta import relativedelta

#Create dates needed to be entered as parameters
today = datetime.date.today()
first = today.replace(day=1)
#End of the Prior Month
eopm = first - datetime.timedelta(days=1)
eopm = eopm.strftime("%Y%m%d")
#Create first business day of current month date
us_bd = CustomBusinessDay(calendar=USFederalHolidayCalendar())
focm = first
nxtMo = today + relativedelta(months=+1)
fonm = nxtMo.replace(day=1)
eocm = fonm - datetime.timedelta(days=1)
first_bd = pd.DatetimeIndex(start = focm, end = eocm, freq= us_bd)
first_bd = first_bd.strftime("%Y%m%d")
#First Business Day of the Month
first_bd = first_bd[0]
#Last Business Day of the Month
lst_day = len(first_bd)-1
last_bd = first_bd[lst_day]

I left some code in there that is not needed for the last business day of the current month, but may be useful to someone.

来源：https://stackoverflow.com/questions/37441323/finding-last-business-day-of-a-month-in-python

标签

python

datetime

calendar