my_reduce.py

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

from collections import Iterable

def my_reduce(func, seq, init=None):
 ```
 参考官网例子('https://docs.python.org/3.5/library/functools.html?highlight=reduce#functools.reduce')
 ```
 if not isinstance(seq, Iterable):
 raise 'The seq must be iterbale'
 
 it = iter(seq)
 if init is None:
 value = next(it)
 else:
 value = init
 
 for i in it:
 value = func(value, i)
 
 return value