Klasa ułamki bez main'a

def gcd(a, b):
  while b != 0:
      b, a = a % b, b
  return a

def lcm(a, b):
  return abs( a * b // gcd(a, b))

class Fraction:
      objCounter = 0
      def __init__(self, *args): # (self, counter, denominator) params
            if len(args) == 1 : # decimal fraction
                self.counter = args[0]*10
                # print(args[0])
                self.denominator = 10
            elif len(args) == 2:
                self.counter = args[0]
                self.denominator = args[1]
                if(self.denominator == 0):
                      raise ValueError("denominator: 0 (zero value ecpt)")
            else:
                raise OverflowError("Unexpected param number, try again with 1 or 2 params to func")
            # self.counter = counter
            # self.denominator = denominator
            Fraction.objCounter = Fraction.objCounter + 1

      def __del__(self):
            Fraction.i = Fraction.objCounter - 1

      def __mul__(self, other):
            return Fraction(self.counter * other.counter, self.denominator * other.denominator)

      def __truediv__(self, other):
            return Fraction(self.counter * other.denominator, self.denominator * other.counter)

      def __str__(self):
            return str(int(self.counter)) + "/" + str(int(self.denominator))

      def __add__(self, other):
            if(self.denominator != other.denominator):
                m = lcm(self.denominator, other.denominator)
                l = (m / self.denominator * self.counter) + (m / other.denominator * other.counter)
                return Fraction(l,m)
            else:
                  return (self.counter + other.counter, self.denominator)

      def __sub__(self, other):
            if(self.denominator != other.denominator):
                m = lcm(self.denominator, other.denominator)
                l = (m / self.denominator * self.counter) - (m / other.denominator * other.counter)
                return Fraction(l,m)
            else:
                  return(self.counter + other.counter, self.denominator)

u = Fraction(0.1)
print(u)
u2 = Fraction(3, 4)
print(u.__add__(u2))
print( 'NumOfObj:', Fraction.objCounter)