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-rw-r--r--youtube_dl/casefold.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/casefold.py b/youtube_dl/casefold.py
index 748c2d491..ad9c66f8e 100644
--- a/youtube_dl/casefold.py
+++ b/youtube_dl/casefold.py
@@ -1663,5 +1663,5 @@ def casefold(s):
 
 
 __all__ = [
-    casefold
+    'casefold',
 ]