Remove slash for path head checking

simplebooks.py

@@ -116,7 +116,7 @@ class SimpleBooks(datasets.GeneratorBasedBuilder):
         _id = 0
         for path, file in files:
             head, tail = os.path.split(path)
-            if head.endswith(f"{subset}/") and tail == f"{split}.txt":
+            if head.endswith(f"{subset}") and tail == f"{split}.txt":
                 for line in file:
                     yield _id, {"text": line.strip()}
                     _id += 1