class MyException(Exception):
    def __str__(self):
        return self.args[0]


def DoWork():
    raise MyException("My hoverboard is full of eels")
    pass

if __name__ == '__main__':
    try:
        DoWork()
    except MyException as ex:
        print("This will get printed: " + str(ex)) #Line1
        print("This will not get printed and will raise exception: " + ex) #Line2

print("This will also work: %s" % ex)