python / python/cpython

__text_signature__ parser silently drops arguments with certain unsupported default forms

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extension-modules
Dominant language
Python
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Description

BPO 42976
Nosy @anntzer

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 2021-01-20.11:21:25.305>
labels = ['extension-modules']
title = '__text_signature__ parser silently drops arguments with certain unsupported default forms'
updated_at = <Date 2021-01-20.11:21:25.305>
user = 'https://github.com/anntzer'

bugs.python.org fields:

activity = <Date 2021-01-20.11:21:25.305>
actor = 'Antony.Lee'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2021-01-20.11:21:25.305>
creator = 'Antony.Lee'
dependencies = []
files = []
hgrepos = []
issue_num = 42976
keywords = []
message_count = 1.0
messages = ['385335']
nosy_count = 1.0
nosy_names = ['Antony.Lee']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue42976'
versions = []

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No source files, tests, or entry points are named in the issue. Start by locating the text_signature parser in CPython and review the linked BPO issue for examples of unsupported default forms; done should preserve all arguments instead of silently dropping them, with regression coverage for the reported cases.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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