typing.get_type_hints wrong namespace for forward-declaration of inner class
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stdlib
topic-typing
type-bug
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- Python
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Description
| BPO | 37835 |
|---|---|
| Nosy | @ilevkivskyi |
| Files |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = None
created_at = <Date 2019-08-13.09:36:43.877>
labels = ['3.7', 'type-bug', 'library']
title = 'typing.get_type_hints wrong namespace for forward-declaration of inner class'
updated_at = <Date 2019-09-09.09:59:14.831>
user = 'https://bugs.python.org/netbnd'
bugs.python.org fields:
activity = <Date 2019-09-09.09:59:14.831>
actor = 'levkivskyi'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-08-13.09:36:43.877>
creator = 'netbnd'
dependencies = []
files = ['48539', '48552', '48562']
hgrepos = []
issue_num = 37835
keywords = []
message_count = 8.0
messages = ['349535', '349958', '349986', '349988', '350468', '350982', '351282', '351398']
nosy_count = 2.0
nosy_names = ['levkivskyi', 'netbnd']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue37835'
versions = ['Python 3.6', 'Python 3.7']
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 running typing_check.py to reproduce the get_type_hints failure, then inspect the typing implementation involved in resolving forward declarations for inner classes. Use the provided get_type_hints_for_inner_classes.zip and metaclass_workaround.py for additional cases; the issue is done when the inner-class forward declaration resolves in the correct namespace.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 32/100