cert_file = None key_file = None server_port = 5556 db_host = "127.0.0.1" db_port = 3306 db_user = None db_pw = None db_db = None db_charset = 'utf8mb4' elo_start_value = 1000 elo_default_k = 20 # field dimension (warning: this constant is not constantly used) n = 3