Issues

• Any validator can pass when all subvalidators fail (message-count heuristic)

  Pylons/colander#371 · Filter by author pramodavansaber opened on Jun 29, 2026

• Length() schema validator does not interpolate

  Pylons/colander#356 · Filter by author jenstroeger opened on Jun 25, 2023
  2

• Invalid Schema of String and Boolean

  Pylons/colander#355 · Filter by author gauravk-mk opened on Apr 6, 2023
  2

• Add preparer for serialize

  Pylons/colander#329 · Filter by author digitalresistor opened on Feb 26, 2019

• Opposite of preparer for modifying the value after validation (or let validation return the new cstruct)

  Pylons/colander#328 · Filter by author digitalresistor opened on Feb 26, 2019

• Bug when flattening with a non-existent sequence and colander.drop

  Pylons/colander#299 · Filter by author iwillau opened on Aug 31, 2017
  1

• Boolean inputs lower-cased before being compared to true_values and false_values

  Pylons/colander#282 · Filter by author grant-humphries opened on Feb 16, 2017
  2

• Colander and None during deserialization?

  Pylons/colander#276 · Filter by author tsauerwein opened on Oct 28, 2016
  22

• Allow None value for strings

  Pylons/colander#274 · Filter by author jenstroeger opened on Oct 18, 2016

• "Invalid" check for Mappings

  Pylons/colander#259 · Filter by author romuald opened on Apr 4, 2016

• problematic String.serialize/deserialize behaviour for bytes in python 3

  Pylons/colander#251 · Filter by author novocaine opened on Jan 26, 2016

• Boolean type should fallback to False instead of True!!!

  Pylons/colander#250 · Filter by author daveoncode opened on Jan 21, 2016
  6

• Unexpected behaviour of .unflatten method. BUG?

  Pylons/colander#240 · Filter by author surabujin opened on Aug 25, 2015
  1

• Missing positional parameter

  Pylons/colander#236 · Filter by author jenstroeger opened on Jun 19, 2015
  6

• typ or schema_type

  Pylons/colander#229 · Filter by author tisdall opened on Jun 10, 2015
  6

• flatten() AttributeError: '_null' object has no attribute 'get'

  Pylons/colander#206 · Filter by author dmdm opened on Feb 16, 2015

• Deferred validators and missing

  Pylons/colander#197 · Filter by author mazvv opened on Nov 15, 2014
  2

• Polymorphism for schema

  Pylons/colander#192 · Filter by author fangpenlin opened on Sep 16, 2014
  10

• Number cannot serialize None and Datetime serializes None to colander.null

  Pylons/colander#186 · Filter by author ny2ko opened on Aug 27, 2014
  3

• improper Invalid.asdict behavior when raising an exception for a subnode

  Pylons/colander#182 · Filter by author mmerickel opened on Aug 9, 2014

• default empty values don't work in serialize()

  Pylons/colander#180 · Filter by author imbaczek opened on Jul 29, 2014
  1

• provide custom error message

  Pylons/colander#175 · Filter by author 29x10 opened on May 26, 2014
  2

• ComboBreaker exception that breaks the validation chain

  Pylons/colander#166 · Filter by author jayd3e opened on Feb 9, 2014

• Exception Hierarchies

  Pylons/colander#153 · Filter by author swooster-submitnet opened on Nov 12, 2013
  1

• flatten/unflatten missing from type interface

  Pylons/colander#151 · Filter by author mmerickel opened on Nov 8, 2013