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Catch OSError when checking if fp is sys.stdout #5585

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merged 1 commit into from Jul 6, 2021
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Catch OSError when checking if fp is sys.stdout #5585

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6 changes: 5 additions & 1 deletion src/PIL/ImageFile.py
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Expand Up @@ -493,7 +493,11 @@ def _save(im, fp, tile, bufsize=0):
# But, it would need at least the image size in most cases. RawEncode is
# a tricky case.
bufsize = max(MAXBLOCK, bufsize, im.size[0] * 4) # see RawEncode.c
if fp == sys.stdout or (hasattr(sys.stdout, "buffer") and fp == sys.stdout.buffer):
try:
stdout = fp == sys.stdout or fp == sys.stdout.buffer
except (OSError, AttributeError):
stdout = False
if stdout:
fp.flush()
return
try:
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