Am 26.10.2011 19:34, schrieb Nathan Rice:
Since this happily went off to the wrong recipient the first time...
The python json module/simpljson are badly in need of an architecture
update. The fact that you can't override the encode method of
JSONEncoder and have it work reliably without monkey patching the pure
python encoder is a sign that something is horribly wrong.
+1
I wonder why the builtin json didn't implemented the __json__ hook. Now
you need to write encoders for possibly arbitrary (imported/third party)
objects.... Looks like it's not so hard to extend json.JSONEncoder to
look for __json__ though:
>>> import json
>>> from functools import partial
>>> from types import MethodType
>>> class Encoder(json.JSONEncoder):
... def default(self, obj):
fn = getattr(obj, '__json__', None)
... if fn and type(fn) == MethodType:
... return obj.__json__()
... return json.JSONEncoder.default(self, obj)
...
>>> class T(object):
... def __json__(self):
... return 'foo'
...
>>> t = T()
>>> dumps = partial(json.dumps, cls=Encoder)
>>> dumps(dict([(1,1), (2,2), ('test',t)]))
'{"test": "foo", "1": 1, "2": 2}'
>>>
cheers
Paul
[snip]
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