auto save

diy.py

-with open(r'c:\Users\Admin\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')as files:
-    a=files.readlines()
-    print(a)
\ No newline at end of file
+with open(r'c:\Users\Admin\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')as files:#read 读取
+    a=files.readlines()#逐行读取
+    # print(a)
+    finally_sum=[]
+    for i in a: #循环遍历
+        result=i.split()#分割默认为为列表
+        # print(result[1:])
+        sum=0 
+        for sale in result[1:]:
+            sum=sum+int(sale)  #累加义卖款  int()整数
+            count=result[0]+str(sum)+'\n'#名字和义卖款做拼接   
+        finally_sum.append(count)
+with open (r'c:\Users\Admin\Desktop\test.txt','w',encoding='utf-8') as files:
+    files.writelines(finally_sum)