处理多个变量的类似异常

Question

How do I handle the exceptions in such a way that I get a separate comment for the same exception with two different variables.

    try:
        global a
        a = int(num)
    except ValueError:
        print(num, "is not a number. Please try again...")
    try:
        global b
        b= int(denom)
        return (Fraction(a, b))
    except ValueError:
        print(denom, "is not a number. Please try again...")

How do I add both the variables in the same try block but have two different exception blocks as I have two print statements. The issue with the above code is that if I input a string instead of number for variable "a", the system prints the statement but throws the below error too:

NameError: name 'a' is not defined

Also, where do I add the return function?

Answer 1

this will help you handle your exception

def Fraction(a,b):
    try:
        assert type(a) ==int, "is not a number. Please try again..."
        assert type(b)==int, "is not a number. Please try again..."
        .........
    except AssertionError as msg:
            print(msg)