Re: [Yaml-core] PyYAML - Help with redefining to_yaml and multiple documents

[Sean <sma...@gm...>]

I apologize if this is posted multiple times.  I had a little trouble with
the mailing list and google groups.  Hopefully I have it figured out now.



I have a simple python class containing 2 dicts.  I'd like to
> represent an instance of the class as two yaml documents, with the ---
> document start token separating the 2 dicts.  I think I need to
> redefine to_yaml to do this, but I'm not really sure how to get both
> documents into the stream.
>
> import yaml
> class Info(yaml.YAMLObject):
>    yaml_tag = u'Info'
>    def __init__(self):
>        self.firstDoc={1: 'one', 2: 'two', 3: 'three'}
>        self.secondDoc={4: 'four', 5: 'five'}
>
>    @classmethod
>    def to_yaml(cls,dumper,data):
>        return dumper.represent_mapping(tag=u'tag:yaml.org,
> 2002:map',mapping=data.firstDoc)
>
> if __name__ == "__main__":
>    print yaml.dump(Info(),default_flow_style=False)
>
>
> The output from the above is:
> 1: one
> 2: two
> 3: three
>
>
> I would like output like:
> ---
> 1: one
> 2: two
> 3: three
> ---
> 4: four
> 5: five
>
> Any ideas or pointers?
>
> Thanks,
> Sean