python / python/cpython

Should typing.get_type_hints change None annotations?

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3.10 stdlib topic-typing type-bug
主要语言
Python
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描述

BPO 42881
Nosy @gvanrossum, @larryhastings, @ericvsmith

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 2021-01-10.11:29:52.122>
labels = ['type-bug', 'library', '3.10']
title = 'Should typing.get_type_hints change None annotations?'
updated_at = <Date 2021-01-11.00:00:58.806>
user = 'https://github.com/larryhastings'

bugs.python.org fields:

activity = <Date 2021-01-11.00:00:58.806>
actor = 'gvanrossum'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-01-10.11:29:52.122>
creator = 'larry'
dependencies = []
files = []
hgrepos = []
issue_num = 42881
keywords = []
message_count = 4.0
messages = ['384760', '384768', '384769', '384789']
nosy_count = 3.0
nosy_names = ['gvanrossum', 'larry', 'eric.smith']
pr_nums = []
priority = 'low'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42881'
versions = ['Python 3.10']

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  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

调研方向

阅读 issue 42881 的迁移讨论,并检查 typing.get_type_hints 当前针对 None 注解的行为。根据讨论确定预期行为,然后添加或更新有针对性的测试;当行为已得到规范说明且 test-needed 状态已解决时,即可视为完成。

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评估

技术栈
python
领域
tooling
Issue 类型
缺陷
难度
5/5
预计耗时
一周以上
活跃度
停滞
描述清晰度
需要澄清
新手友好度
25/100

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