python / python/cpython

lzma: stream padding in xz files

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3.10 3.11 3.7 (EOL) 3.8 (EOL) 3.9 (EOL) stdlib type-bug
Dominant language
Python
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Description

BPO 44134
Nosy @animalize, @rogdham
Files
  • example1.xz
  • example2.xz
  • 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 2021-05-14.17:52:02.842>
    labels = ['type-bug', '3.8', '3.9', '3.10', '3.11', '3.7', 'library']
    title = 'lzma: stream padding in xz files'
    updated_at = <Date 2021-05-16.10:27:53.156>
    user = 'https://github.com/rogdham'
    

    bugs.python.org fields:

    activity = <Date 2021-05-16.10:27:53.156>
    actor = 'rogdham'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2021-05-14.17:52:02.842>
    creator = 'rogdham'
    dependencies = []
    files = ['50044', '50045']
    hgrepos = []
    issue_num = 44134
    keywords = []
    message_count = 2.0
    messages = ['393681', '393738']
    nosy_count = 3.0
    nosy_names = ['nadeem.vawda', 'malin', 'rogdham']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue44134'
    versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10', '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 provides example1.xz and example2.xz as reproduction inputs; start by reproducing the behavior with Python's lzma support and locating the existing lzma tests. Confirm the expected handling of stream padding and add coverage for both examples, but the migrated issue does not identify a source file or precise expected result.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    backend
    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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