diy.py

with open(r'c:\Users\maku02\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as f1:
    a=f1.readlines()
    for i in a:
        d=i.split()
        sum=0
        for sales in d[1:]:
            sum=sum+int(sales)
        s=d[0]+":"+str(sum)
        print(s)