python / python/cpython

string.Formatter.parse does not handle auto-numbered positional fields

Open
#89,867 11 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

stdlib type-bug
Dominant language
Python
Stars
77.2k
Forks
36k
PR merge metrics
PR metrics pending

Description

BPO 45704
Nosy @ericvsmith

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

Show more details

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-11-03.11:55:47.784>
labels = ['type-bug', '3.8', '3.9', '3.10', '3.11', '3.7']
title = 'string.Formatter.parse does not handle auto-numbered positional fields'
updated_at = <Date 2021-11-05.18:06:11.745>
user = 'https://bugs.python.org/SDesch'

bugs.python.org fields:

activity = <Date 2021-11-05.18:06:11.745>
actor = 'eric.smith'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2021-11-03.11:55:47.784>
creator = 'SDesch'
dependencies = []
files = []
hgrepos = []
issue_num = 45704
keywords = []
message_count = 9.0
messages = ['405610', '405619', '405624', '405627', '405636', '405757', '405796', '405802', '405814']
nosy_count = 2.0
nosy_names = ['eric.smith', 'SDesch']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue45704'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10', 'Python 3.11']

Linked PRs
  • gh-129617

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

Start at string.Formatter.parse and inspect the behavior for auto-numbered positional fields described by the issue. Review linked PR gh-129617 before beginning, then reproduce the parsing case and verify that the resulting behavior matches the intended auto-numbering semantics.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.