Open Collective
Open Collective
marshmallow 3.0.0 released
Published on August 18, 2019 by Steven Loria

v3 is here!

Some of the major changes:

  • Python 3 only
  • Strictness by default: no more strict mode; `load` and `dump` return data
  • Unknown field validation
  • More intuitive datetime handling
  • Improved Dict field with support for semi-structured data
  • Generate schemas from dictionaries (see https://stevenloria.com/dynamic-schemas-in-marshmallow/ for use cases)
  • Significantly improved performance

And lots more .

We've written a guide to upgrading your code: https://marshmallow.readthedocs.io/en/latest/upgrading.html

Thanks to all who contributed code, brainpower, and donations to make this release possible.