import pandas as pd

 

beginDate = '2018-08-01'

endDate = '2019-03-31'

 

 

date_index = pd.date_range(beginDate, endDate)

days = [pd.Timestamp(x).strftime("%Y-%m-%d") for x in date_index.values]

 

tmp = []

for index , v in enumerate(days):

    if index == len(days)-1:

        tmp.append(days[index])

    if index == 0:

        tmp.append(days[0])

    else:

        _ = v.split('-')[2]

        if _ == '01':

            tmp.append(days[index-1])

            tmp.append(days[index])

 

print(tmp)

for i in range(len(tmp)//2):

    print(tmp[i * 2] , tmp[i * 2 + 1])

import calendar

import datetime

Format="%d-%d-%d"

year=datetime.datetime.now().year

for i in range(1,13):

   d =calendar.monthrange(year,i)

   print(Format % (year, i, 1))

   print(Format % (year, i, d[1]))

import datetime

 

for x in xrange(1, 13):

  dt_start = (datetime.datetime(2016, x, 1)).strftime("%Y%m%d")

  if 12 == x:

    dt_end = (datetime.datetime(2016, 12, 31)).strftime("%Y%m%d")

  else:

    dt_end = (datetime.datetime(2016, x+1, 1) - datetime.timedelta(days = 1)).strftime("%Y%m%d")

  print dt_start, dt_end