auto save

func.py

+def caidan():
+    total = []
+    while True:
+        unit= input("请输入：")
+        if unit== 'q':
+            break
+        else:
+            try:
+                unit=int(unit)
+            except:
+                input("请输入")
+            else:
+                total.append(unint)
+            finally:
+                print("====================")
+     return total
+
+
+ def sum(money):
+     count = 0
+     for i in money:
+         count=count + i
+     return count
+
+
+price = caidan()
+pay = sum(price)
+print("您一共消费了" + str(pay) + "元！")
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