#!/bin/user/env python
# -*- coding: utf-8 -*-
import sys

def main(args):
# -*- coding: utf-8 -*-
    data = [1,2,[3,4,[5,6]]]
    print flat(data)

def flat(data):
    res = []
    if data != []:
       print data
       if isinstance(data[0],list):
           res += flat(data[0])
       else:
           res.append(data[0])
       res += flat(data[1:])
    return res

# Admire
if __name__ == '__main__':
    main(sys.argv)