save project

a.py

+def a(): 
+    total = []
+    while True:
+        unit= input("请输入：")
+        if unit== 'q':
+            break
+        else:
+            try:
+                unir = int(unit)
+            except:
+                print("请重新输入一个数字")
+            else:
+                total.append(unit)
+            finally:
+                print("================================") 
+    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？" 
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