fraction.py

class Fraction:
    def __init__(self,n,d):
        self.num = n
        self.den = d

    def __str__(self):
        return "{}/{}".format(self.num, self.den)
    
    def __add__(self,other):
        temp_num = self.num * other.den + other.num * self.den
        temp_den = self.den * other.den

        return "{}/{}".format(temp_num, temp_den)
    
    def __sub__(self,other):
        temp_num = self.num * other.den - other.num * self.den
        temp_den = self.den * other.den

        return "{}/{}".format(temp_num, temp_den)
    
    def __mul__(self,other):
        temp_num = self.num * other.num
        temp_den = self.den * other.den

        return "{}/{}".format(temp_num, temp_den)
    
    def __truediv__(self,other):
        temp_num = self.num * other.den
        temp_den = self.den * other.num

        return "{}/{}".format(temp_num, temp_den)