Search results

[Bug] Negative POSIX timestamps cannot be deserialized after timestamp serialization

Status: Open.

#3019 In marshmallow-code/marshmallow;

· Sohel2309 opened on Aug 13, 2026

test_from_timestamp_with_overflow_value test failing on Windows because of message mismatch

Status: Open.

#2999 In marshmallow-code/marshmallow;

· dsimidzija opened on Jul 15, 2026

Inconsistent value type when validating nested schema fields

Status: Open.

#2961 In marshmallow-code/marshmallow;

· torotil opened on Apr 27, 2026

Dependency Dashboard

Status: Open.

#2953 In marshmallow-code/marshmallow;

· renovate opened on Apr 13, 2026

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

Status: Open.

#2893 In marshmallow-code/marshmallow;

· thanhlecongg opened on Jan 10, 2026

Feature - allow inheriting load_default from nested schema populated with from_dict

Status: Open.

#2889 In marshmallow-code/marshmallow;

· nneul opened on Jan 6, 2026

Performance impact of Nested with many vs List of Nested.

Status: Open.

#2872 In marshmallow-code/marshmallow;

· mspiller opened on Dec 1, 2025

Consistency with allow_none with serialization and deserialization

Status: Open.

#2836 In marshmallow-code/marshmallow;

· matejsp opened on Jul 16, 2025

SchemaOpts misses partial

Status: Open.

#2834 In marshmallow-code/marshmallow;

· number492 opened on Jun 24, 2025

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

question

Status: Open.

#2833 In marshmallow-code/marshmallow;

· dinghao-8 opened on Jun 20, 2025

Removing Schema context feels like a bad idea!

Status: Open.

#2832 In marshmallow-code/marshmallow;

· ThiefMaster opened on Jun 20, 2025

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

question

Status: Open.

#2829 In marshmallow-code/marshmallow;

· herkalurk opened on Jun 3, 2025