Backport PR #21791: Refix check for manager presence in deprecated blocking_input.

timhoffm · meeseeksmachine · commit 65f9b8774f9d · 2021-11-29T23:07:41.000Z
diff --git a/lib/matplotlib/blocking_input.py b/lib/matplotlib/blocking_input.py
@@ -83,7 +83,7 @@ def __call__(self, n=1, timeout=30):
         self.n = n
         self.events = []
 
-        if self.figure.canvas.manager:
+        if self.fig.canvas.manager:
             # Ensure that the figure is shown, if we are managing it.
             self.fig.show()
         # Connect the events to the on_event function call.
