Metaclass example

meta.py

"""
Metaclass example by a metaddict.
Python 2: replace metaclass= by a class variable __metaclass__ =
"""

class Meta(type):
    def __new__(mcs, cname, cbases, cdict):
        meta_name = cname
        new_class_dict = {}
        for class_attribute_name, class_value in cdict.items():
            if class_attribute_name == 'meta_name':
                meta_name = class_value
            elif class_attribute_name == 'meta_object':
                if issubclass(class_value.__class__, dict):
                    for key, value in class_value.items():
                        new_class_dict[key] = value
                    # can you get functions to work with self ?
            else:
                new_class_dict[key] = value
        return type.__new__(mcs, 'Meta%s' % meta_name, cbases, new_class_dict)

def factory(class_name, meta_shit={'hello':'world'}):
    class NewMeta(metaclass=Meta):
        meta_name = class_name
        meta_object = meta_shit
    return NewMeta()

if __name__ == '__main__':
    meta_shit = factory("World")
    print(meta_shit.__class__.__name__)
    assert meta_shit.__class__.__name__ == 'MetaWorld'
    assert hasattr(meta_shit, 'hello')
    assert getattr(meta_shit, 'hello') == 'world'