When running a function multiple times how do i save the data after each time it is run?

Question

I've tried many times to do this but after each time it is run the variable i made is still set to 0 but after the last time it is run it is set to 1, a way to do this? here's my code so far.

how do i make it so whenever it loops through the next time the value of amount won't be 0

EDIT 1: new code:

                global amount, penny, pebble, rock, bottle, cap, ten_dollar_note, percentage
                pebble = 0
                rock = 0
                bottle = 0
                cap = 0
                penny = 0
                ten_dollar_note = 0
                amount = 0

                percentage = random.randint(0, 100)

                if percentage <= 10:
                    ten_dollar_note += 1
                    amount += 1
                elif percentage <= 35:
                    rock += 1
                    amount += 1
                elif percentage <= 45:
                    pebble += 1
                    amount += 1
                elif percentage <= 65:
                    cap += 1
                    amount += 1
                elif percentage <= 85:
                    penny += 1
                    amount += 1

            random_percentage = random.randint(15,31)
            times = 0

            while times != random_percentage:
                overworld_choose()
                times += 1
                amount_one = amount```

the problem now is that each loop i want to add the value of the function before to it so i tried to do amount_one = amount + 0 but it doesnt seem to work

Answer 1

I fixed it all i had to do is add a variable outside of the functoin called new_amount and make this the while loop:

 while times != random_percentage:
        overworld_choose()
        times += 1
        amount1 = amount
        new_amount += amount```