Faylda probelli 2 ta son bor uni oqib yangi faylga yigindini yozish

Faylda probelli 2 ta son bor uni oqib yangi faylga yigindini yozish

f = open('C:\input.txt', 'r')

l = f.read()
indexl = l.index(' ')
a = str(int(l[:indexl]) + int(l[indexl +1:]))
f1 = open('C:\output.txt', 'w')
f1.write(a)