It is more efficient not to serialize attributes you don't need, and it also avoids tripping null-checks on unrelated attributes when doing updates or deletes.
5.0.1
5.0.0
This is a major release with breaking changes.
Please read the [release notes](https://github.com/pynamodb/PynamoDB/blob/master/docs/release_notes.rst#v500) carefully for a full list of changes.
5.0.0b4
This is a beta release for a major release with breaking changes.
Please read the [release notes](https://github.com/pynamodb/PynamoDB/blob/master/docs/release_notes.rst#v500b4) carefully and report any bugs encountered.
5.0.0b3
This is a beta release for a major release with breaking changes.
Please read the [release notes](https://github.com/pynamodb/PynamoDB/blob/master/docs/release_notes.rst#v500b3) carefully and report any bugs encountered.
5.0.0b2
This is a beta release for a major release with breaking changes.
Please read the [release notes](https://github.com/pynamodb/PynamoDB/blob/master/docs/release_notes.rst#v500b2) carefully and report any bugs encountered.