Marshmallow: [Question] is it possible to deserialize objects using standard schemas from a .yaml file?

[symonk]

I want to build complex nested objects in a .yaml file that should be deserialized to real python objects, can we do this using the same schemas that I am using for json work? or do I need to do a yaml to json, then json through my schemas to python objects?

[deckar01]

You can set render_module to yaml in the schema's Meta class attributes. That will cause loads and dumps to use yaml instead of json.

https://marshmallow.readthedocs.io/en/3.0/api_reference.html#marshmallow.Schema.Meta

[symonk]

@deckar01 any easy way to manage where I need to use the same schemas for both json and yaml? I have a particular use case. define new schemas for each which are essentially duplicates with different render modules?

[deckar01]

You would just separate the render operations from the schema operations, then swap the render module as needed.

data = yaml.load(raw_data)
obj = schema.load(data)
...
data = schema.dump(obj)
raw_data = yaml.dump(data)