Function missing_required

check_layout.py:36–39

(keys, symbols, msg)

            class_name, key_list_str(missing)))

def missing_required(keys, symbols, msg):
    missing = set(symbols).difference(keys)
    if len(missing) > 0:
        warn("%s, missing: %s" % (msg, key_list_str(missing)))

def unexpected_keys(keys, symbols, msg):
    unexpected = set(symbols).intersection(keys)