finger.py

    def generate_fingerprint(self):
        # the body of fingerprint is generated with the following sequences
        # seperated by '_'
        sequence = [
            'account_number',
            'account_routing_type',
            'account_routing_value',
            'bank_country_id',
            'swift_code',
            'account_routing_type2',
            'account_routing_value2',
            'iban',
        ]
        bank = self.__dict__
        body = ''
        for key in sequence:
            if key in bank and bank[key]:
                body += str(bank[key])
            body += '_'
        # remove the last _
        body = body[:-1]
        m = hashlib.md5()
        m.update(body.encode('utf-8'))
        return m.hexdigest()