diy.py

with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='uft-8') as file:
    a=file.readlines()
    #print(a)

for i in a:
    data=i.split()
    #print(data[1:])
    sum=0
    for sales in data[1:]:
        sum=sum+int(sales)
        result=data[0]+str(sum)
        print(result)