fix: properly save model

lab4/train_spam_model.py

@@ -65,11 +65,10 @@ def main():
     for text, label, score in zip(samples, preds, scores_demo):
         verdict = "SPAM" if label == 1 else "HAM"
         print(f"[{verdict}] score={score:.2f} :: {text}")
-
-
-if __name__ == "__main__":
     # persist our model
     joblib.dump(vectorizer, "vectorizer.joblib")
     joblib.dump(clf, "classifier.joblib")
+
+if __name__ == "__main__":
     print("\nSaved model artifacts.")
     main()