database doesn't return protocol version

[romanesko]

I have connection:

conn_info = {'host': 'localhost',
                 'port': 5433,
                 'user': 'user',
                 'password': '123456',
                 'database': 'bigData'}

connection = vertica_python.connect(**conn_info)

and I got error:

KeyError: 'protocol_version'

it falls from here: [connection.py]

        # Complex types metadata is returned since protocol version 3.12
        self.complex_types_enabled = self.parameters['protocol_version'] >= (3 << 16 | 12) and \
                                     self.parameters.get('request_complex_types', 'off') == 'on'
        self._logger.info('Connection is ready')

here is the log of self.parameters:

{'server_version': 'v7.1.1-0', 'long_string_types': 'on', 'standard_conforming_strings': 'on', 'client_locale': 'en_US@collation=binary'}

can be fixed in connection.py with

self.complex_types_enabled = self.parameters.get('protocol_version',0) >= (3 << 16 | 12) and \