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Ensure DPI key exists in image info before accessing. #123

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Ensure DPI key exists in image info before accessing. #123

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4 changes: 4 additions & 0 deletions docx/image/tiff.py
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,10 @@ def _dpi(self, resolution_tag):
"""
if resolution_tag not in self._ifd_entries:
return 72

if TIFF_TAG.RESOLUTION_UNIT not in self._ifd_entries:
return 72

resolution_unit = self._ifd_entries[TIFF_TAG.RESOLUTION_UNIT]
if resolution_unit == 1: # aspect ratio only
return 72
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