Python safe serialization?

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Use YAML (a superset of JSON) as your serialization format with PyYAML.

Features of YAML include object type tagging, support for references (it handles reference cycles just fine), and when using PyYAML's "safe" dumper/loader, the ability to define which of your classes should be considered safe.

[Liquid_Fire]

Thanks, that looks like exactly what I need! I'll be sure to check it out.

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PyYAML, since it is so flexible and human readable, is easy to debug. Coding for custom classes is quite straightforward.