Update app.py

app.py

@@ -17,6 +17,7 @@ def train_and_plot(weights, n_neighbors):
     y_ = knn.predict(T)
     score = knn.score(T, y_)
 
+    plt.figure()
     plt.scatter(X, y, color="darkorange", label="data")
     plt.plot(T, y_, color="navy", label="prediction")
     plt.axis("tight")