save project

diy.py

@@ -15,4 +15,14 @@ def new_input():
             print("-"*30)
    return total
 
-new_input()
\ No newline at end of file
+
+def sum(unit):
+   count = 0
+   for i in unit:
+      count = count+i
+   return count
+
+
+result = new_input()
+pay = sum(price)
+print("您一共消费了"+str(pay)+"元！扫码还是现金？")
\ No newline at end of file