save project

func.py

+def a():
+    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:
+    return total 
+def sum(money):
+    count=0
+    for i in money:
+        count=count+i
+    return(count)
+price=a()
+pay=sum(price)
+print("您一共消费了"+str（pay)+"元！扫码还是现金呢?"