If it won't be simple, it simply won't be. [source code] by Miki Tebeka, CEO, 353Solutions

Friday, August 15, 2008

flatten


#!/usr/bin/env python

__author__ = "Miki Tebeka <miki.tebeka@gmail.com>"

def flatten(items):
'''Flatten a nested list.

>>> a = [[1], 2, [[[3]], 4]]
>>> list(flatten(a))
[1, 2, 3, 4]
>>>
'''
for item in items:
if getattr(item, "__iter__", None):
for subitem in flatten(item):
yield subitem
else:
yield item

if __name__ == "__main__":
from doctest import testmod
testmod()
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