Add bookmark in Ida and optionally check if it is a duplicate

add_bookmark.py

def add_bookmark(offset, comment, check_duplicate=True):
        """

        :param offset:
        :param comment:
        :param check_duplicate:
        :return:
        """
        for bslot in range(0, 1024, 1):
            slotval = idc.get_bookmark(bslot)
            if check_duplicate:
                if slotval == offset:
                    break

            if slotval == 0xffffffffffffffff:
                idc.put_bookmark(offset, 0, 0, 0, bslot, comment)
                break