auto save

func.py

+def new_input():
+    total = []
+    while True:
+        unit= input("请输入：")
+        if unit== 'q':
+            break
+        else:
+            try:
+                unit = int(unit)
+            except:
+                print("请重新输入一个数字")
+            else:
+                total.append(unit)
+            finally:
+                print("-"*30)    
+    return total
+
+def sum(money):
+    count = 0
+    for i in money:
+        count = count + 1
+    return count
+    
+price = new_input()
+pay = sum(price)
+print('你消费了'+str(pay) + '元！"扫码还是现金？")