Update DEFT2021.py

DEFT2021.py

@@ -617,14 +617,16 @@ class DEFT2021(datasets.GeneratorBasedBuilder):
 
                     for h in hf_split:
 
-                        all_res.append({
-                            "id": str(key),
-                            "document_id": h['document_id'],
-                            "tokens": h['tokens'],
-                            "ner_tags": h['ner_tags'],
-                        })
-
-                        key += 1
+                        if len(h['tokens']) > 0 and len(h['ner_tags']) > 0:
+                            
+                            all_res.append({
+                                "id": str(key),
+                                "document_id": h['document_id'],
+                                "tokens": h['tokens'],
+                                "ner_tags": h['ner_tags'],
+                            })
+
+                            key += 1
 
                 if split == "train":
                     allowed_ids = list(train)