auto save

func.py

@@ -13,5 +13,12 @@ def new_input():
                 total.append(unit)
                 total.append(unit)
             finally:
             finally:
                 print("-"*30)
                 print("-"*30)
+    return total
+def sum(unit):
+    c=0
+    for i in unit:
+        c=c+i
+    return  c    
 r=new_input()
 r=new_input()
-print(r)
+pay = sum(r)
\ No newline at end of file
+print("一共消费了"+str(pay)+"元")
\ No newline at end of file