#!/usr/bin/env python

# -*- coding:utf8 -*-

'''reduce:处理一个序列，然后把序列进行合并操作'''

###在python中没有reduce函数，所以需要导入它(去掉前面的注释符即可)

#from functools import  reduce

def reduce_test(f,array,i = None):

    if i is None:

        tmp = array.pop(0)

    else:

        tmp = i

    for num in array:

        tmp = f(tmp,num)

    return tmp

num = [1,2,3,4,5]

'''将数组里的数字全部乘起来，i是对所得值乘以i'''

print(reduce_test(lambda x,y:x*y,num,10))

print()

#reduce函数

from functools import  reduce

num = [1,23,43,456,42]

'''将数组内的所有值加起来，i是对所得值加上i'''

print(reduce(lambda x,y:x+y,num,10))

print(reduce(lambda x,y:x+y,num))