是否可以在Python中创建与类成员持久性状态类似的行为，就像使用Java'transient'关键字那样？

Question

I have a python data class that contains fields that I do not want to be persisted/saved/serialized (excluded as well from pickle.dump() / json.dump() /etc).

What I'm looking for can be best explained as something similar to Java transient , were I can mark a class member as transient and that member will be excluded from any persistency or serialization of that class object without any additional boilerplate code.

I've found this similar question: Can I mark variables as transient so they won't be pickled? but it only address pickle.

Is there a pythonic way of doing that?

Thanks!

Answer 1

This isn't a thing in Python simply because there is no consistent method of serialisation in the first place. As your linked question demonstrates, pickle uses __getstate__ , but JSON and yaml serializers don't necessarily. You would need to override whatever code is doing the actual serialisation.