save project

diy.py

@@ -13,5 +13,13 @@ def a():
             t.append(u)
     return t
 b=a()
-print(b[1])
+def sum(m):
+    c=0
+    for i in m:
+        c=c+i
+    print("你一共消费"+str(c)+"元。")
+sum(b)    
+
+
+