0.5.0.rc4

pymoo/util/running_metric.py

@@ -31,6 +31,8 @@ def do(self, _, algorithm, force_plot=False, **kwargs):
         metrics = self.term.metrics
         tau = len(metrics)
 
+        fig = None
+
         if metric is not None and (tau + 1) % self.delta_gen == 0 or force_plot:
 
             _delta_f = metric["delta_f"]
@@ -71,6 +73,4 @@ def press(event):
             self.hist.append((tau, _delta_f))
             self.hist = self.hist[-(self.n_plots - 1):]
 
-            return True
 
-        return False

pymoo/visualization/video/callback_video.py

@@ -38,10 +38,10 @@ def notify(self, algorithm, **kwargs):
                 figure = self.do(algorithm.problem, algorithm, **kwargs)
 
                 if self.do_show:
-                    if figure is None:
-                        plt.show()
-                    else:
+                    if figure is not None:
                         figure.show()
+                    else:
+                        plt.show()
 
                 if self.video is not None:
                     self.video.record(fig=figure)