how to append fields values in python list and ignore None value

Question

i need To calculate average of some fields values and ignore none values from being calculated thats what i could done

@api.multi
def update_bar(self):
    list=[self.item.pro, self.drc.pro, self.dsc.pro, self.org.pro, 
          self.car.pro, self.model.pro, self.year.pro]
    for rec in list:
        if rec:
            self.new_list = list.append(rec)
    print(self.new_list)
    pass

Answer 1

I would do it using list comprehension

def average_or_none(ls):
    temp = [x for x in ls if x is not None]

    if temp:
        return sum(temp) / len(temp)
    else:
        return None