Check syntax / well-formed only.

[Edward Cullen]

Can jsonschema be used to check only for well-formedness?

I'm joining a project that I know is going to be JSON-heavy and validation has come up, primarily as a debugging aid. Right now, we don't know what the data will look like, but we do want to ensure that we're starting with valid JSON; being able to use jsonschema will give us a nice leg-up if/when we need full schema validation (which is more likely than not!).

Also, if this is possible, and someone has already done performance comparisons between json.load() or json.loads() and jsonschema.validate(<well-formed only>), that would be really useful too :)

TIA

[Julian Berman]

Hey!

By the time jsonschema sees your instance and schema, it needs to have already been loaded (by a JSON parser) into Python objects, so no, there's no way inside jsonschema to check that.

There are plenty of benchmarks out there for which the fastest JSON parser is for some sample data, if simplejson isn't fast enough for you (json.load and json.loads are going to be comparable, since simplejson is kind of dumb and just implements load as json.loads(file.read())).

Cheers,

Julian

[Edward Cullen]

Cool, thanks for such a detailed response!