class Calc:
def __init__(self):
self.last_sum = -1
def get_sum(self, n1, n2):
self.last_sum = n1 + n2
return self.last_sum
calc = Calc()
sum1 = calc.get_sum(5, 3)
# sum1 is 8
sum2 = calc.get_sum(2, 3)
# sum2 is 5
print(f'{sum1 = }')
print(f'{sum2 = }')
print(f'{calc.last_sum = }')