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Title: Improve wave module error messages to include the offending value · Issue #149306 · python/cpython · GitHub

Open Graph Title: Improve wave module error messages to include the offending value · Issue #149306 · python/cpython

X Title: Improve wave module error messages to include the offending value · Issue #149306 · python/cpython

Description: Summary The wave module currently raises errors without the offending value: wave.Error: bad # of channels wave.Error: bad sample width wave.Error: bad frame rate When values come from variables, configuration, or parsed data, the traceb...

Open Graph Description: Summary The wave module currently raises errors without the offending value: wave.Error: bad # of channels wave.Error: bad sample width wave.Error: bad frame rate When values come from variables, c...

X Description: Summary The wave module currently raises errors without the offending value: wave.Error: bad # of channels wave.Error: bad sample width wave.Error: bad frame rate When values come from variables, c...

Opengraph URL: https://github.com/python/cpython/issues/149306

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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Improve wave module error messages to include the offending value","articleBody":"## Summary\n\nThe `wave` module currently raises errors without the offending value:\n\n```\nwave.Error: bad # of channels\nwave.Error: bad sample width\nwave.Error: bad frame rate\n```\n\nWhen values come from variables, configuration, or parsed data, the\ntraceback shows the call site but not the actual offending value. For\n`Wave_read`, the values are parsed from the WAV file header and never\nappear in the traceback at all.\n\n## Reproduction\n\n```python\nimport wave, io\nwave.open(io.BytesIO(), 'wb').setframerate(-1)\n# wave.Error: bad frame rate\n```\n\nAfter this change:\n\n```\nwave.Error: bad frame rate: -1\n```\n\nI have a patch ready and will open a PR shortly.\n\n\u003c!-- gh-linked-prs -->\n### Linked PRs\n* gh-149307\n\u003c!-- /gh-linked-prs -->\n","author":{"url":"https://github.com/htjworld","@type":"Person","name":"htjworld"},"datePublished":"2026-05-03T02:07:28Z","url":"https://github.com/python/cpython/issues/149306"}
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on May 3, 2026https://github.com/python/cpython/issues/149306#issue-4370617723
gh-149306: Improve error messages in wave module to include the offending value #149307https://github.com/python/cpython/pull/149307
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on May 3, 2026https://github.com/python/cpython/issues/149306#event-25101540288
pythongh-149306: Improve error messages in wave module to include the…https://github.com/htjworld/cpython/commit/cc28830b8684a087f5f64c428dc341cf3317a2ad
pythongh-149306https://github.com/python/cpython/issues/149306
cc28830https://github.com/htjworld/cpython/commit/cc28830b8684a087f5f64c428dc341cf3317a2ad
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