add random splits to filtered data

ppb_affinity.py

@@ -88,10 +88,10 @@ class ppb_affinity(datasets.GeneratorBasedBuilder):
             reader = csv.DictReader(f)
             rows = list(reader)
             if self.config.name == "raw":
-                for idx, row in enumerate(reader):
+                for idx, row in enumerate(rows):
                     yield idx, row
             elif self.config.name == "filtered":
-                for idx, row in enumerate(reader):
+                for idx, row in enumerate(rows):
                     if row["split"] == split:
                         del row["split"]
                         yield idx, row