# -*- coding: utf-8 -*- """ Use of nested lists @authors: katkaranikola stkarlos """ def nested_list(m,n): l = [] for i in range(0,m): k = [] for j in range(0,n): x = raw_input("give 1 number: ") k.append(float(x)) l.append(k) print l t =[] for i in range(0,len(l)): s = 0 for j in range(0, len(l[i])): s = s + l[i][j] t.append(s) return t k = nested_list(2,5) print k