擅长:python、mysql、java
<p>直接来自<a href="http://docs.python.org/library/itertools.html" rel="noreferrer">itertools</a>模块的Python文档:</p>
<pre><code>from itertools import tee, izip
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = tee(iterable)
next(b, None)
return izip(a, b)
l = [1, 2, 3, 4, 5, 6]
for pair in pairwise(l):
print pair
</code></pre>