add default hook to loads()

[LBdN]

Without a default hook in loads, the value of the default hook on dumps is small.

The pattern of having classes with method from_json() and to_json() is really useful when combined with a default hook.

[ijl]

There are many python libraries that try to do something like this, e.g., marshmallow. I suggest using one of them.

[LBdN]

it's true but aren't they one or two order of magnitude slower ? speed is important in my case and the reason for my request.

[ijl]

Yes they're slow, and in terms of effort I think marshmallow is a six year project with over a hundred contributors. I'm not interested but of course the option is there to fork and implement this for yourself.