diy.py

g=0
v=""
with open(r'c:\Users\EDZ\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as a:    
    for i in a.readlines():
        i=i.split()
        print(i[0],end=':    ')
        v+=str(i[0])+':  '
        s=0
        for j in i[1:]:
            s += int(j)
        print(s)
        v+=str(s)+'\n'
        g+=s
    print(g)
    v+=str(g)+'\n'
with open(r'c:\Users\EDZ\Documents\lesson13-1\ales_list.txt','w',encoding='utf-8') as f:
    f.write(v)