python中有关于exception的疑问，需要创造两种错误的类（LenError和TypeError）

Question

python中有关于exception的疑问，需要创造两种错误的类（LenError和TypeError），怎么解决呢？

Answer 1

class LenError(Exception):
    pass
class TypeError(Exception):
    pass

def isValidID(IDnum):
    try:
        if len(str(IDnum))!=4:
            raise LenError()
        if type(1)!=type(IDnum):
            raise TypeError()
        return "Valid ID number"
    except LenError as e:
        return "The length of your ID is not valid"
    except TypeError as e:
        return "The type of your ID is not valid"
print(isValidID('1234'))
print(isValidID(12345))
print(isValidID(1234))