[Python-ideas] Json object-level serializer (original) (raw)

Tarek Ziadé ziade.tarek at gmail.com
Thu Jul 29 14:02:21 CEST 2010

On Thu, Jul 29, 2010 at 1:54 PM, M.-A. Lemburg <mal at egenix.com> wrote:

Antoine Pitrou wrote:

On Thu, 29 Jul 2010 13:35:41 +0200 Tarek Ziadé <ziade.tarek at gmail.com> wrote:

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 How about letting json use the reduce protocol instead? How would you then write a class that works with both pickle and json ? IMO, we'd need a separate method to return a JSON version of the object, e.g. .json(). I'm not sure how deserialization could be handled, since JSON doesn't support arbitrary object types.

As I told Oleg, I think its OK not to have a round trip like Pickle.

The use case I have is to express a structure in Json, but loading it back can be done in a custom, explicit process.

It cannot be triggered from the json package itself since it cannot know that a given Json structure was built through a specific class.

Cheers Tarek

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