Georg Brandl wrote:
Am 29.07.2010 14:31, schrieb M.-A. Lemburg:
Georg Brandl wrote:
Am 29.07.2010 13:35, schrieb Tarek Ziadé:
Hello,
What about adding in the json package the ability for an object to provide a different object to serialize ? This would be useful to translate a class into a structure that can be passed to json.dumps
So, it __json__ is provided, its used for serialization instead of the object itself:
> import json > class MyComplexClass(object): .... def __json__(self): .... return 'json' .... > o = MyComplexClass() > json.dumps(o) '"json"'
You can do this with a very short subclass of the JSONEncoder:
class MyJSONEncoder(JSONEncoder): def default(self, obj): return obj.__json__() # with a useful failure message
Does that also work with the JSON C extension ?
I think so. The C encoder gets the default function as an argument.
Then that sounds like the right way forward. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Jul 29 2010)
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