diy.py

with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='Utf-8') as file:
    a=file.readlines()
    for i in a:
        boat=i.split()
        sum=0
    for u in boat[1:]:
        sum+=int(u)
    r=boat[0]+str(sum)+"/n"
    print(r)