def _create_tables(self, checkfirst=True):
log.info('<STR_LIT>'.format(self.engine.url))<EOL>models.Base.metadata.create_all(self.engine, checkfirst=checkfirst)<EOL>
creates all tables from models in your database

        :param checkfirst: True or False check if tables already exists
        :type checkfirst: bool
        :return: