How to get pretty printed JSON with Keras model.to_json()?

Question

I am trying to save model to JSON with Keras and getting condensed JSON code.

Is it possible to save in pretty-printed human friendly JSON here?

Answer 1

The to_json method from keras accepted **kwargs and passed them to json.dumps. Therefore this is the one line solution:

print(model.to_json(indent=4))

It generate results similar to the example of @anton-vbr.

Answer 2

You can use pprint.pformat to retrieve a pretty string:

import pprint
json_str = model.to_json()
formatted_str = pprint.pformat(json.loads(json_str), indent=4)

If you don't want to save a copy of the formatted json, rather if you prefer to save it to a file, you can use pprint.pprint and specify stream=... with a file handler:

pprint.pprint(json.loads(json_str), indent=1, stream=open('model.json', 'w'))