test.py

urls = [1, 2, 3]


def main():
    while urls:
        item = urls.pop(0)
        print('Processing item: {}'.format(item))

        tries = 0
        while tries < 4:
            try:
                raise Exception('My Exception')
                # Use break statement at the end.
            except Exception:
                print('error')
                tries += 1
        else:
            return


main()