Try and except block not running the exception

Question

The code works fine except for the exceptions ie, when I input something like cat/dog or 1/0 or for the case 3/2, instead of re-prompting, the terminal just goes into blank infinite mode that I have to manually stop with cmd+c. Please help identify what I'm doing wrong. Thanks!

def main():
    fuel=input("Fuel: ")
    c=convert(fuel)
    print(f"{convert(fuel)}%")
    gauge(c)


def convert(fraction):
    while True:
        try:
            X,Y=fraction.split("/")
            x=int(X)
            y=int(Y)
            f=x/y
            z=int((x/y)*100)
            if f<=1:    
                return z            

        except (ValueError, ZeroDivisionError):
            pass   
           

def gauge(percentage):
    if percentage<=1:
        print("E")
    elif percentage>=99:
        print("F")
    else:
        print("Z%")


if __name__ == "__main__":
    main()

Answer 1

Well, you never re-ask the question. To solve it, move the input("Fuel: ") call inside the while loop:

def main():
    c = convert()
    print(f"{c}%")
    gauge(c)


def convert():
    while True:
        fraction = input("Fuel:")
        try:  # Rest can be the same