Is it possible to fix a valid YAML with bindings / links disabled by Ruby or Python?

Question

Is it possible to disable the creation of bindings and links (and efficiently enumerate redundant data explicitly) either in PyYAMLor in Ruby Psych?

I may have missed something while searching on the Internet, but it seems that there are Psychnot many options, and I could not determine if this allows PyYAML.

The rationale is that I have to serialize some data and transfer it in a human-readable form to a non-really technical employee for manual verification. Some data is redundant, but I need it to be explicitly stated for readability (bindings and links are a good concept of efficiency, but not for readability).

Ruby and Python are my selection tools, but if there is some other fairly simple way to “expand” YAML documents, it can just do.

Answer 1

I found this related ticket on the PyYAML website ( http://pyyaml.org/ticket/91 ), it looks like bindings can be disabled using a custom line dump truck:

import yaml

class ExplicitDumper(yaml.SafeDumper):
    """
    A dumper that will never emit aliases.
    """

    def ignore_aliases(self, data):
        return True

So, for example, the following outputs can be achieved using a standard dump truck and a new explicit dump truck:

>>> yaml.dump([1L, 1L])
"[&id001 !!python/long '1', *id001]\n"

>>> yaml.dump([1L, 1L], Dumper=ExplicitDumper)
'[1, 1]\n'

You can configure additional properties to ensure print privacy, etc. in a call yaml.dump(...).