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3 changes: 3 additions & 0 deletions crawl4ai/extraction_strategy.py
Original file line number Diff line number Diff line change
Expand Up @@ -1216,6 +1216,9 @@ def _apply_transform(self, value, transform):
str: The transformed value.
"""

if value is None:
return value

if transform == "lowercase":
return value.lower()
elif transform == "uppercase":
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