Pure Python operator.index doesn't match the C version.

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
c, python
Domain
backend

Research direction

Start by reviewing operator_index.patch through operator_index_4.patch and the linked PRs gh-148023 and gh-148025, then inspect the current operator.index entry point. Compare the pure-Python and C behavior, including the dependency on bpo-17576; done means both implementations agree for the reported cases.

Written by the indexing model from the issue text.

Description

3.13 3.14 3.15 extension-modules type-bug
BPO 18712
Nosy @arigo, @mdickinson, @ericsnowcurrently, @zware, @serhiy-storchaka, @corona10, @iritkatriel
Dependencies
  • bpo-17576: PyNumber_Index() is not int-subclass friendly (or operator.index() docs lie)
    		•
    Files
  • operator_index.patch
  • x.py
  • operator_index_2.patch
  • y.py
  • operator_index_3.patch
  • operator_index_4.patch
    		•

    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 2013-08-12.14:09:38.011>
labels = ['extension-modules', 'type-bug', '3.11']
title = "Pure Python operator.index doesn't match the C version."
updated_at = <Date 2021-10-02.15:33:51.696>
user = 'https://github.com/mdickinson'

    bugs.python.org fields:

    activity = <Date 2021-10-02.15:33:51.696>
actor = 'corona10'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2013-08-12.14:09:38.011>
creator = 'mark.dickinson'
dependencies = ['17576']
files = ['31273', '31334', '31335', '31336', '31344', '31353']
hgrepos = []
issue_num = 18712
keywords = ['patch']
message_count = 21.0
messages = ['194966', '195000', '195006', '195064', '195451', '195454', '195457', '195458', '195474', '195476', '195489', '195490', '195510', '195513', '195545', '195546', '195547', '195548', '195549', '195665', '401603']
nosy_count = 7.0
nosy_names = ['arigo', 'mark.dickinson', 'eric.snow', 'zach.ware', 'serhiy.storchaka', 'corona10', 'iritkatriel']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue18712'
versions = ['Python 3.11']

    Linked PRs
    • gh-148023
    • gh-148025
    Dominant language
    Python
    Stars
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    Forks
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    Avg merge
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    Merged PRs (30d)
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