save project

diy.py

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