Issues

• [benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark)

  cloudpipe/cloudpickle#595 · Filter by author leo-gan opened on Jul 17, 2026

• Bug: unguarded dict.pop() in _function_setstate causes KeyError crash on crafted pickle (regression from c6f8cd4)

  cloudpipe/cloudpickle#593 · Filter by author clemdc40 opened on May 12, 2026
  1

• cloudpickle is not compatible with PyPy 7.3.22

  cloudpipe/cloudpickle#592 · Filter by author Viicos opened on May 5, 2026
  2

• Feature request: cloudpickle.patch_multiprocessing() utility for ForkingPickler replacement

  cloudpipe/cloudpickle#589 · Filter by author clemlesne opened on Feb 24, 2026

• Can not pickle torch.utils.data.DataLoader

  cloudpipe/cloudpickle#587 · Filter by author k82cn opened on Jan 16, 2026

• register_pickle_by_value appears to not deliver monkeypatches to receiver

  cloudpipe/cloudpickle#586 · Filter by author sgillies opened on Jan 15, 2026

• TypeError: cannot pickle '_abc._abc_data' object with python 3.14 and cloudpickle 3.1.2

  cloudpipe/cloudpickle#585 · Filter by author thomass-dev opened on Dec 16, 2025
  21

• Override attributes are not pickled correctly

  cloudpipe/cloudpickle#584 · Filter by author roysh-jether opened on Nov 30, 2025

• Cloudpickle does not properly register submodule dependencies of a pickled function if the function accesses the submodule via getattr (or equivalent means)

  cloudpipe/cloudpickle#581 · Filter by author 27359794 opened on Nov 4, 2025
  1

• Pickling functions that use packages can be extremely slow. Proposal and code for an alternative implementation

  cloudpipe/cloudpickle#576 · Filter by author 27359794 opened on Oct 24, 2025
  4

• Are there any methods to serialize a function that call function from other Python module file

  cloudpipe/cloudpickle#571 · Filter by author kira42310 opened on Jun 12, 2025

• IntFlag Enum - broken after py3.11

  cloudpipe/cloudpickle#558 · Filter by author EkremGuner opened on Mar 11, 2025

• PyPy3.11: multiple test failures

  cloudpipe/cloudpickle#557 · Filter by author mgorny opened on Feb 15, 2025
  3

• 3.1.1: sdist is missing tests

  cloudpipe/cloudpickle#555 · Filter by author mtelka opened on Jan 15, 2025
  1

• Adoption of type-hints

  cloudpipe/cloudpickle#541 · Filter by author priba opened on Aug 2, 2024
  6

• jax jitted functions cloudpickled work but include some error messages

  cloudpipe/cloudpickle#537 · Filter by author bionicles opened on Jun 28, 2024
  4

• Is it possible to re-generate the source of pickled objects including encapsulated globals?

  cloudpipe/cloudpickle#532 · Filter by author kesmit13 opened on Apr 11, 2024
  4

• Unable to Pickle a Cython coroutine

  cloudpipe/cloudpickle#531 · Filter by author XavierGeerinck opened on Feb 14, 2024
  2

• Unpickling child class fails if base class __init_subclass__ expects an argument

  cloudpipe/cloudpickle#527 · Filter by author Gollum999 opened on Nov 28, 2023
  3

• TypeError: __init__() missing 2 required positional arguments: 'e' and 'http_resp'

  cloudpipe/cloudpickle#526 · Filter by author IamJasonBoy opened on Nov 22, 2023
  1

• cloudpickle fails to pickle NewType in main module by value on Python 3.10 and newer

  cloudpipe/cloudpickle#520 · Filter by author hauntsaninja opened on Oct 11, 2023
  1

• Pickle by value datetime dependency

  cloudpipe/cloudpickle#516 · Filter by author sebrestin opened on Sep 28, 2023
  4

• Random class_tracker_id for dynamic class

  cloudpipe/cloudpickle#510 · Filter by author gmcatsf opened on Jul 19, 2023
  1

• Cannot pickle functions decorated through contextlib

  cloudpipe/cloudpickle#509 · Filter by author crusaderky opened on Jul 6, 2023
  1

• Cloudpickle incompatible with DataDog/dd-trace-py

  cloudpipe/cloudpickle#506 · Filter by author lukesturgis opened on May 23, 2023
  1