Home/ Questions/Q 3721322
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-19T05:30:59+00:00

For a User Entity, I want to create a property that is a dictionary

  • 0

For a User Entity, I want to create a property that is a dictionary of serialized data. The data is:

time = time_value
name = name_value
id = id_value

Are there existing libraries to support serializing data, including DateTime values, and then deserializing them into their types (like DateTime, String, Integer) when fetching them from the Datastore?

Note: I’m going on the assumption that serializing the data is more efficient than encoding in JSON. If that is a false assumption then this question is a moot.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The built-in Python library pickle can be used to serialize and deserialize your data (while maintaining type information). You can store the “pickled” data in a db.BlobProperty.

    Unfortunately, Google App Engine’s uses a Python-only implementation for the pickle library, and does not have support for the much faster cPickle. Based on analysis presented by Konstantin in his article Pickle vs JSON – Which is Faster?, it seems like you can expect to get better performance with JSON in this case.

    • 0