save project

3.py

 #file=open(r"C:\Users\admin\Desktop\sales_list.txt","r",encoding="utf-8")
 with open(r"C:\Users\admin\Desktop\sales_list.txt","r",encoding="utf-8") as file:
     wc=file.readlines()
-    
+final_sum=[]    
 for i in wc:
     data=i.split()
     sum=0
     for sales in data[1:]:
         sum=sum+int(sales)
-    result=data[0]+str(sum)
-    print(result) 
\ No newline at end of file
+    result=data[0]+str(sum)+'\n'
+    #print(result)
+    final_sum.append(result)
+
+with open(r"C:\Users\admin\Desktop\sales_list.txt","a",encoding='utf-8') as file:
+    file.writelines(final_sum) 
\ No newline at end of file