How do i complete this code for a fraction calculator?

class Fraction: # constructor for Fraction # default def __init__(self, n=0, d=1): # set private numerator & denominator fields and reduce the fraction

def __str__(self): # return a string of how the fraction should look

def reduce(self): #code to reduce itself based on the gcf method

def add(self, other): result = Fraction() # adds self and other return result

def mult(self, other): result = Fraction() #multiplies self and other return result

def div(self, other): result = Fraction() #divides self and other return result

def sub(self, other): result = Fraction() #subtracts self and other return result

def gcf(self, num1, num2): # returns greatest common factor of num1 & num2

------------------------------------------------(Different file)

import fraction

class Equation: def __init__(self, f1 = fraction.Fraction(), f2 = fraction.Fraction(), op=''): #sets data fields to the parameters if values are given

def __str__(self): # returns string how it should look

def read_fraction(self, equ): num = 0 i = 0 while equ[i] in ['0','1','2', '3', '4','5','6','7','8','9', '10']: num = num * 10 + int(equ[i]) i += 1

# Remove the / character equ = equ[i+1:]

i = 0 denom = 0 while equ[i] in ['0','1','2', '3', '4','5','6','7','8','9', '10']: denom = denom * 10 + int(equ[i]) i += 1 frac = fraction.Fraction(num,denom) return frac, equ[i:].lstrip()

def read_equation(self): inputed_equ = input() inputed_equ += ' '

frac1, inputed_equ = self.read_fraction(inputed_equ)

oper = inputed_equ[0]

inputed_equ = inputed_equ[1:].lstrip() frac2, inputed_equ = self.read_fraction(inputed_equ) self.__frac1 = frac1 self.__frac2 = frac2 self.__oper = oper

def compute_equation(self): #returns fraction of computed equation

-------------------------------------------(Different file)

import equation

def main(): equ = equation.Equation() again = 'y' while again != 'q': equ.read_equation() frac = equ.compute_equation() print(frac) again = input('Another equation?: (q to quit)')

main()