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Improve error message #9392

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@radarhere radarhere commented Jan 13, 2026

Pillow/src/PIL/ImageFile.py

Lines 816 to 818 in e2b87a0

if self.state.xsize <= 0 or self.state.ysize <= 0:
msg = "Size cannot be negative"
raise ValueError(msg)

Since the size might be equal to zero, this updates the error message to

Size cannot be zero or negative

@radarhere radarhere changed the title Improved error message Improve error message Jan 14, 2026
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