Do you have an idea about the expected output? For example, will this do?
>>> f = FileItem("/foo/bar") >>> magic(f) '{"fname": "/foo/bar"}'
In that case you can merely call json.dumps(f.__dict__)
.
If you want more customized output then you will have to subclass JSONEncoder
and implement your own custom serialization.
For a trivial example, see below.
>>> from json import JSONEncoder >>> class MyEncoder(JSONEncoder): def default(self, o): return o.__dict__ >>> MyEncoder().encode(f) '{"fname": "/foo/bar"}'
Then you pass this class into the json.dumps()
method as cls
kwarg:
json.dumps(cls=MyEncoder)
If you also want to decode then you’ll have to supply a custom object_hook
to the JSONDecoder
class. For example:
>>> def from_json(json_object): if 'fname' in json_object: return FileItem(json_object['fname']) >>> f = JSONDecoder(object_hook = from_json).decode('{"fname": "/foo/bar"}') >>> f <__main__.FileItem object at 0x9337fac> >>>