How to subtract DateTime.date and date fields

Question

When I traying to subtract this :
def  get_duration ( self ):
for rec in  self :
if rec.notification:
if rec.notification == 'month' :
rec.notification_date = self .date_end - fields.Date(date.today() + relativedelta( months = 1 ))
print ( type ( self .date_end))
print ( type (date.today() + relativedelta( months = 1 ))) I get this error unsupported operand type(s) for 'datetime.date' and 'Date'.

MUHSIN KOTTAKKUTH · Accepted Answer

Hi jenan soliman,
You are trying to subtract between different data types. you can use following code for finding today's date. So both the datatypes will be in same format (fields.Date()). When you subtract two date objects, you will get the difference of those dates only. it will be a  datetime.timedelta() object not a date object . So you have to find the date again using this timedelta object . See the code snippet below.

date_today = fields.Date.today()
date_difference = self.date_end - (d

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