Method __new__

example_code/item_066.py:125–139

(meta, name, bases, class_dict)

class TraceMeta(type):
    def __new__(meta, name, bases, class_dict):
        klass = super().__new__(meta, name, bases, class_dict)

        for key in dir(klass):
            if key in IGNORE_METHODS:
                continue

            value = getattr(klass, key)
            if not isinstance(value, TRACE_TYPES):
                continue

            wrapped = trace_func(value)
            setattr(klass, key, wrapped)

        return klass


print("Example 5")