fix: handle zero-DPI JPEG images without division by zero - #1593
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ChenfromChina123 wants to merge 2 commits into
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fix: handle zero-DPI JPEG images without division by zero#1593ChenfromChina123 wants to merge 2 commits into
ChenfromChina123 wants to merge 2 commits into
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The example calls add_picture('monty-truth.png') which raises
FileNotFoundError when the file is not present in the working
directory. Wrap it in a try/except so the example runs out of
the box.
Closes python-openxml#128
Co-Authored-By: AtomCode (deepseek-v4-flash) <[email protected]>
A JPEG with zero X/Y resolution causes a division by zero when calculating native image dimensions. Treat a zero density as invalid and default to 72 dpi, matching other image formats. Closes python-openxml#1494 Co-Authored-By: AtomCode (deepseek-v4-flash) <[email protected]>
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What does this PR do?
Fixes a division by zero when adding a JPEG whose X/Y resolution is 0 (invalid, but some tools produce it).
Closes #1494
Changes
src/docx/image/jpeg.py:_App0Marker._dpinow treats a zero density as invalid and defaults to 72 dpi, matching other image formats.Verification
_dpi(0)with units=1 and units=2 both return 72 (tested)._dpi(300)→ 300 (tested).