Merge pull request #1631 from cclauss/identity-is-not-equality-in-python

Use ==/!= to compare str literals

DemoPrograms/Demo_Matplotlib_Browser_Paned.py

@@ -893,7 +893,7 @@ while True:
     event, values = window.Read()
     # print(event)
     # show it all again and get buttons
-    if event is None or event is 'Exit':
+    if event in (None, 'Exit'):
         break
 
     try: