更新 function.py

function.py

@@ -103,7 +103,9 @@ def load_data(filepath):
 
     return data, target_variable
 
-
+def accuracy(X, y, weights):
+    predictions = predict_logreg(X, weights)
+    return np.mean(predictions == y)
 
 # 其余代码保持不变
 if __name__ == "__main__":