[Python-ideas] Json object-level serializer
g.brandl at gmx.net
Thu Jul 29 14:22:01 CEST 2010
Am 29.07.2010 13:35, schrieb Tarek Ziadé:
> 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()
You can do this with a very short subclass of the JSONEncoder:
def default(self, obj):
return obj.__json__() # with a useful failure message
I don't think it needs to be built into the default encoder.
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