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#!/usr/bin/python

# -*- coding: utf-8 -*-

__author__ = 'xy'

def reduce_(bin_func, seq, init=None):

Iseq = list(seq)

if init is None:

res = Iseq.pop()

else:

res = init

for item in Iseq:

res = bin_func(res, item)

return res

print 'the total is :', reduce((lambda x, y: x+y), range(5))