Update app.py

app.py

@@ -4,6 +4,7 @@ from sklearn.preprocessing import MinMaxScaler, LabelEncoder
 from sklearn.metrics import accuracy_score
 from concrete.ml.sklearn import XGBClassifier as ConcreteXGBClassifier
 from concrete.ml.deployment import FHEModelDev, FHEModelClient, FHEModelServer
+import os
 
 
 # Örnek dosyalar