auto save

1.py

+def new_input():
+    total=[]
+    while True:
+        unit=input('请输入(q退出):')
+        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("===================")
+    return total
+def dum(money):
+    count=0
+    for i in money:
+        count=count+i
+    return count
+price=new_input()
+pay=sum(price)
+
+print("您一共消费了"+str(pay)+"元！扫码还是现金呢？")
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