dataclasses fail to unpickle when there is an object cycle with a custom __hash__ function
Open
Nobody has claimed this yet.
topic-dataclasses
type-bug
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 35.9k
- PR merge metrics
- PR metrics pending
Description
extracting the dataclasses issue mentioned in https://github.com/python/cpython/issues/124937#issuecomment-2395064821 into its own issue
Linked PRs
- gh-125005
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the originating dataclasses discussion in issue 124937 and the linked PR gh-125005. Reproduce the object-cycle case with a custom hash function, then verify that the dataclass can be unpickled successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100