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fix error when uploading image with an alpha channel
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parent
00dc03a235
commit
ecb48ce663
@ -96,10 +96,7 @@ def get_semester_code(d: Optional[date] = None) -> str:
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def scale_dimension(width, height, long_edge):
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if width > height:
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ratio = long_edge * 1.0 / width
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else:
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ratio = long_edge * 1.0 / height
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ratio = long_edge / max(width, height)
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return int(width * ratio), int(height * ratio)
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@ -107,8 +104,8 @@ def resize_image(im, edge, img_format):
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(w, h) = im.size
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(width, height) = scale_dimension(w, h, long_edge=edge)
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content = BytesIO()
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# use the lanczos filter for antialiasing
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im = im.resize((width, height), Resampling.LANCZOS)
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# use the lanczos filter for antialiasing and discard the alpha channel
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im = im.resize((width, height), Resampling.LANCZOS).convert("RGB")
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try:
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im.save(
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fp=content,
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