save project

func.py

 def n_i():
     total = []
     while True:
-        try:     
+        try:
+            print("*"*50)     
             unit= input("请输入：")
             if unit== 'q':
                 break
             int(unit)
         except:
-            
+            print("*"*50)
             print("要输入正确的数字")  
         else:
             total.append(unit)