auto save

func.py

+total = []
 def new_input():
 def new_input():
-    total = []
-
-    try:
     
     
-        unit= int(input("请输入商品价格："))
+while True:
+    try:
+        unit= int(input("请输入价格："))
         
         
     except[]:
     except[]:
         print:("no")
         print:("no")