Question

I am using python.

There are two columns. columns A and B. I want to reduce the value in column A and B when the save button in the press

this my code

But what happens when I press the save button. value to 0

def _tot_get_deposit(self, cr, uid, ids, name, arg, context=None):
    res = {}
    for deposit in self.browse(cr, uid, ids, context=context):
        sum = 0.0
        sum = A - B
        return sum
    return res

Answer 1

i think you need to read more about how functions work.

once you return anything, the function will end.

you can not itterate over anything and return multiple values within a function.

try saving them locally in the function, and then at the end returning a list/dict/tuple with all the results.

for instance… i think your code could be written:

def _tot_get_deposit(self, cr, uid, ids, name, arg, context=None):
    res = {}
    results = []
    for deposit in self.browse(cr, uid, ids, context=context):
        sum = 0.0
        sum = A - B
        results.append( sum )
    return (res,results)

this will create a list of “sum” which is then added to your dict “res” and then returned. together as a tuple.