Issues · marshmallow-code/marshmallow · GitHub

[RFC] Don't pass attr, obj, data to fields (de)serialize methods
#2039 · lafrech opened on Aug 25, 2022
7
RFC: Remove Nested(many=True) to keep only the List(Nested()) form
#779 · lafrech opened on Apr 19, 2018
42

Labels Milestones

Question: Should `fields.Enum()` accept `None` when an enum member has value `None`?

#2985

· GeraldineGalindo opened

on Jun 22, 2026

backports/_datetime_fromisoformat.cpython-312-darwin.so: Mach-O 64-bit bundle arm64

#2978

· mockodin opened

on Jun 8, 2026

Inconsistent value type when validating nested schema fields

#2961

· torotil opened

on Apr 27, 2026

Dependency Dashboard

#2953

· renovate opened

on Apr 13, 2026

`utils.get_value` raise TypeError with out-of-range `int` index

#2893

· thanhlecongg opened

on Jan 10, 2026

Feature - allow inheriting load_default from nested schema populated with from_dict

#2889

· nneul opened

on Jan 6, 2026

Performance impact of Nested with many vs List of Nested.

#2872

· mspiller opened

on Dec 1, 2025

Consistency with allow_none with serialization and deserialization

#2836

· matejsp opened

on Jul 16, 2025

SchemaOpts misses partial

#2834

· number492 opened

on Jun 24, 2025

'NoneType' object is not subscriptable when serializing fields that do not belong to the database is None

#2833

· dinghao-8 opened

on Jun 20, 2025

Removing Schema context feels like a bad idea!

#2832

· ThiefMaster opened

on Jun 20, 2025

Is there a way to pre-define built-in validators that can be used multiple times?

#2829

· herkalurk opened

on Jun 3, 2025