python / python/cpython

zipfile should catch ValueError as well as OSError to detect bad seek calls

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3.11 stdlib
Dominant language
Python
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Description

BPO 29468
Nosy @llllllllll, @FFY00, @iritkatriel

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 2017-02-07.03:14:05.339>
labels = ['library', '3.11']
title = 'zipfile should catch ValueError as well as OSError to detect bad seek calls'
updated_at = <Date 2021-05-24.18:42:06.427>
user = 'https://github.com/llllllllll'

bugs.python.org fields:

activity = <Date 2021-05-24.18:42:06.427>
actor = 'FFY00'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2017-02-07.03:14:05.339>
creator = 'llllllllll'
dependencies = []
files = []
hgrepos = []
issue_num = 29468
keywords = []
message_count = 3.0
messages = ['287185', '393314', '394263']
nosy_count = 3.0
nosy_names = ['llllllllll', 'FFY00', 'iritkatriel']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue29468'
versions = ['Python 3.11']

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

The issue concerns Python's zipfile library and its handling of bad seek calls. Start by locating the relevant error-handling entry point and any associated tests; confirm the expected behavior for both OSError and ValueError, then run the focused zipfile tests to verify that both cases are detected.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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