adjused date to use the last day of the last month and the first day …

…of the current month one year ago

init.py

@@ -14,6 +14,7 @@
 
 import datetime
 from dateutil.relativedelta import relativedelta
+import calendar
 
 ######
 print "load SQL functions"
@@ -293,8 +294,12 @@ def addWorkSheetFooter(start_col,calc_col_count,pad):
 wb = Workbook()
 ws = wb.active
 #
-start_date=(datetime.datetime.now() - relativedelta(years=1)).strftime('%Y-%m-%d')
-end_date=datetime.datetime.now().strftime('%Y-%m-%d')
+today=datetime.datetime.now() #datetime.date(2016,3, 31)
+#rollback to the previous month and create a range from 2017-01-01 - 2017-01-31
+_start_date=(today - relativedelta(years=1))
+start_date=datetime.date(_start_date.year, _start_date.month,1)
+_end_date=(today - relativedelta(months=1))
+end_date=datetime.date(_end_date.year, _end_date.month, calendar.monthrange(_end_date.year,_end_date.month)[1]).strftime('%Y-%m-%d')
 
 print "from "+start_date+" to "+ end_date