Add a way to generate a Schema from a dictionary

Generating schemas at runtime is a fairly common use case that I’ve run into a handful of times at this point (webargs, environs , form builders…).

It might make sense to incorporate this into marshmallow core.

Proposed API

>>> MyDynamicSchema = Schema.from_dict({"foo": fields.Str()})
>>> MyDynamicSchema
<class 'marshmallow.schema.GeneratedSchema'>

class AlbumSchema(Schema):
     artist = fields.Nested(Schema.from_dict({"name": fields.Str()})

[deckar01]

@sakshiaroras It looks like you are new to GitHub. You can use 3 back ticks ``` before and after your code to preserve the white space. You can learn more about this by reading GitHub’s Mastering Markdown guide.

You may also want to learn more about minimal repro cases to help get your problem solved more efficiently. I recommend StackOverflow’s guide on the subject: How to create a Minimal, Reproducible Example.

From what I can tell, your issue does not seem to be related to this closed issue. You might consider opening a new issue to avoid sending unrelated notifications to the original participants of this discussion.

[sloria]

That’s still not a runnable script. Can you please post a minimal script that can be run on its own (i.e. python repro.py)?