AttributeError: 'Fraction' 对象没有属性 'denom'

如何解决AttributeError: 'Fraction' 对象没有属性 'denom'

下面的代码是分数计算器的一部分，我希望我的代码从我的 init 转到我的 gcd 函数，以便我可以将结果作为分数的 gcd 传递以简化它，我不知道下面的方法是否正确。

class Fraction:


    def __init__(self,num,denom) -> None:  
    
        self.num = self.denom = self.gcd()
        if self.denom < 0:
            self.denom = abs(self.denom)
            self.num = -1*self.num
        elif self.denom == 0:
            raise ZeroDivisionError("cansnot divide by zero")

    def gcd(self):

        while self.denom != 0: 
            self.num,self.denom = self.denom,self.num%self.denom
        return abs(self.num)   

def get_fraction() -> Fraction:

    while True:
        num: str = input("Enter the numerator")
        denom: str = input("Enter the denominator")
        try:
            a = int(num)
            b = int(denom)
            return Fraction(a,b)
        except ValueError:
            print("Enter valid numerator and denominator")

def compute(f1: Fraction,operator: str,f2: Fraction) -> None:

    okay = True
    if operator == '+':
        result = f1.__add__(f2)

    elif operator == '-':
        result = f1.__sub__(f2)

    elif operator == '*':
        result = f1.__mul__(f2)

    elif operator == '/':
        result = f1.__truediv__(f2)

    else:
        print(operator," is an unrecognized operator")
        okay = False

    if okay == True:
        print(f"{f1} {operator} {f2} = {result}")

def main() -> None:

"""Main menu"""

    print("Welcome to the Fraction Calculator! ")
    while True:
        print('Press Q to quit or any other key to start')
        z = input("Start or Quit?")
        if z == 'Q' or z == 'q':
            exit()
        else:
            f1: Fraction = get_fraction()
            operator: str = input("Operation (+,-,*,/,=,<,>,<=,>=,!= ): ")
            f2: Fraction = get_fraction()
            try:
                compute(f1,operator,f2)
            except ZeroDivisionError as e:
                print(e)


if __name__ == '__main__':

    main()

执行此操作时出现以下错误：

while self.denom != 0:
AttributeError: 'Fraction' object has no attribute 'denom'

我不确定为什么会抛出此消息。