Backport PR #9759: blocking_input: Fix "manager" attr check

efiring · MeeseeksDev[bot] · commit 47602d576593 · 2017-11-13T02:55:19.000Z
diff --git a/lib/matplotlib/blocking_input.py b/lib/matplotlib/blocking_input.py
@@ -101,7 +101,7 @@ def __call__(self, n=1, timeout=30):
         self.events = []
         self.callbacks = []
 
-        if hasattr(self.fig, "manager"):
+        if hasattr(self.fig.canvas, "manager"):
             # Ensure that the figure is shown, if we are managing it.
             self.fig.show()
 
