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Title: gh-117716: Fix wave RIFF padding for data chunks by mbeijen · Pull Request #145237 · python/cpython · GitHub

Open Graph Title: gh-117716: Fix wave RIFF padding for data chunks by mbeijen · Pull Request #145237 · python/cpython

X Title: gh-117716: Fix wave RIFF padding for data chunks by mbeijen · Pull Request #145237 · python/cpython

Description: wave.Wave_write now writes the required RIFF pad byte when the data chunk size is odd. Update RIFF chunk size calculations in both header writing and header patching so they include the alignment pad byte when present. Add a regression test in test_wave.py that verifies odd-sized writes are padded, RIFF size is correct, and roundtrip reads preserve frame data. Issue: gh-117716

Open Graph Description: wave.Wave_write now writes the required RIFF pad byte when the data chunk size is odd. Update RIFF chunk size calculations in both header writing and header patching so they include the alignment p...

X Description: wave.Wave_write now writes the required RIFF pad byte when the data chunk size is odd. Update RIFF chunk size calculations in both header writing and header patching so they include the alignment p...

Opengraph URL: https://github.com/python/cpython/pull/145237

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ff3f783 gh-117716: Fix wave RIFF padding for data chunks mbeijen Feb 25, 2026 https://github.com/python/cpython/pull/145237/commits/ff3f783112ce57cc57284b8cad22df06c688f234
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