auto save

func.py

@@ -5,6 +5,12 @@ def u():
         if unit== 'q':
             break
         else:
-            total.append(unit)
+            try: 
+                unit=int(unit)
+            except:
+                print("请输入数字。")
+            else:
+                total.append(unit)
+            print("_"*30)
     print(total)
 u()
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