auto save

diy.py

+with open('sales_list.txt','r',encoding='utf-8') as f:
+    file=f.readlines()
+list=[]
+for i in file:
+    data=i.split()
+    sum=0
+    for j in data[1:]:
+        sum=sum+int(j)
+    s=data[0]+str(sum)+'\n'
+    list.append(s)
+with open('GM.txt','w',encoding='utf-8') as f1:
+    f1.writelines(list)
\ No newline at end of file