auto save

diy.py

+with open(r'C:\Users\LX\Documents\lesson13-1\sales_list.txt','r',encoding='utf=8') as file:
+    a=file.readlines()
+aaa=[]
+for i in a:
+    data=i.split()
+    sum = 0
+    for j in data[1:]:
+        sum = sum + int(j)
+    result = data[0]+str(sum)+'\n'    
+    aaa.append(result)
+with open(r'C:\Users\LX\Desktop\hello.txt','w',encoding='utf=8') as file:
+    file.writelines(aaa)
\ No newline at end of file