save project

diy.py

 with open(r'c:\Users\li\Documents\lesson13-4\sales_list.txt','r',encoding='utf-8') as file1:
     a=file1.readlines()
+result_sum=[]
 for i in a:
-
     data=i.split()
     b=data[1:]
     sum=0
     for c in b:
-
         sum=sum+int(c)
-    result=data[0]+':'+str(sum)
-
+    result=data[0]+':'+str(sum)+'\n'
+    result_sum.append(result)
+with open(r'D:\wenjianjia\新建文件夹 (7)\总和.txt','w',encoding='utf-8') as file2:
+    file2.writelines(result_sum)
+