auto save

test.py

+with open (r"c:\Users\Administrator\Desktop\sales_list.txt","r",encoding="utf-8")as file1:
+    a=file1.readlines()
+    for i in a:
+        data=i.split()
+        sum=0
+        for sales in data[1:]:
+            sum+=int(sales)
+        print(sum)
+
+

test910.py

+with open(r"c:\Users\Administrator\Desktop\sales_list.txt","r",encoding="utf-8")as file1:
+    aa=file1.readlines()
+    new_list=[]
+    for i in aa:
+        i=i.split()
+        sum=0
+        for sales in i[1:]:
+            sum+=int(sales)
+        new_list.append(i[0]+str(sum)+'\n')
+    print(new_list)
+with open(r"c:\Users\Administrator\Desktop\a.txt","w",encoding="utf-8")as file1:
+    file1.writelines(new_list)