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Check ext is not empty during save #145

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Merged
hugovk merged 1 commit into from
Jan 25, 2026
Merged

Check ext is not empty during save #145

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5 changes: 4 additions & 1 deletion src/PIL/Image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -404,6 +404,9 @@ def getmodebands(mode: str) -> int:

def _import_plugin_for_extension(ext: str | bytes) -> bool:
"""Import only the plugin needed for a specific file extension."""
if not ext:
return False

if isinstance(ext, bytes):
ext = ext.decode()
ext = ext.lower()
Expand Down Expand Up @@ -3633,7 +3636,7 @@ def open(
# Try to import just the plugin needed for this file extension
# before falling back to preinit() which imports common plugins
ext = os.path.splitext(filename)[1] if filename else ""
if not (ext and _import_plugin_for_extension(ext)):
if not _import_plugin_for_extension(ext):
preinit()

warning_messages: list[str] = []
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