Suma need __init__?

Question

In the script below, I would like to give, for example, the number 2. I have of course moved to the if where the message will show me. Then he added to the sum 2. Then I give again, for example, 3, etc. The sum will reach 8 and get the message END.

I do not know if int (a) is necessary.

from sys import exit

class Glowna_klasa(object):

    def start(self):
        suma = 0
        a = int(input("Take a number: "))
        print("Now suma have: ", suma)

        if int(suma) == 8:
            print("END")
            exit(1)

        if int(a) == 2:
            print("2 sztuki mają: 1.40")

            # here need add to suma ?
            return self.start()

        elif int(a) == 3:
            print("3 sztuki mają: 2.30")
            return self.start()
        elif int(a) == 4:
            print("4 sztuki mają: 3.20")
            return self.start()
        else:
            print("Error, need number")


crv = Glowna_klasa()
crv.start()

This is what i need:

>>>Take a number: 
2
>>>2 sztuki mają: 1.40
>>>Now suma have: 2
>>>Take a number: 
2
>>>2 sztuki mają: 1.40
>>>Now suma have: 4
>>>Take a number:
4
>>>4 sztuki mają: 3.20
>>>Now suma have: 8
>>>END

Answer 1

您的总体结构比问题提示的要复杂。您试图保持输入的“运行总和”，直到达到给定值为止。考虑以下结构：

laczny = 0
while laczny < 8:
    wybor = int(input("Take a number: "))
    laczny += wybor
    print("Now laczny have: ", laczny)
    # work on wybory 0, 1, 2, 3, ...

print("END")

没有类，没有递归，没有从中间退出。 我希望对您来说更容易。