mdirty added to updates

using walrus operator in examples

examples/dsl/__main__.py

@@ -63,16 +63,12 @@ def main(cmds=None):
             if res:
                 print(res)
         else:
-            try:
-                while True:
-                    cmd = input("please enter command (Return to exit)\n")
-                    if not cmd:
-                        break
-                    res = parser.parse((cmd,))
-                    if res:
-                        print(res)
-            except KeyboardInterrupt as e:
-                SystemExit(e)
+            while cmd := input("Please enter command (Press <Enter> to exit)\n"):
+                if not cmd:
+                    break
+                res = parser.parse((cmd,))
+                if res:
+                    print(res)
 
 
 if __name__ == "__main__":
@@ -99,4 +95,4 @@ if __name__ == "__main__":
     )
 
     # pass cmds to parse cmds, otherwise simply run main() to test stdin parsing
-    main(cmds)
+    main()

examples/observer/__main__.py

@@ -14,13 +14,9 @@ def main():
         obs = Observer(vm)
         vm.subject.add(obs)
 
-        try:
-            while True:
-                cmd = input("Press Return to exit\n")
-                if not cmd:
-                    break
-        except KeyboardInterrupt as e:
-            SystemExit(e)
+        while cmd := input("Press <Enter> to exit\n"):
+            if not cmd:
+                break
 
 
 if __name__ == "__main__":