Python

117

Python文档的旧版本中有一个带有

itertools

from itertools import islicedef window(seq, n=2):    "Returns a sliding window (of width n) over data from the iterable"    "   s -> (s0,s1,...s[n-1]), (s1,s2,...,sn), ...        "    it = iter(seq)    result = tuple(islice(it, n))    if len(result) == n:        yield result    for elem in it:        result = result[1:] + (elem,)        yield result

文档中的一个更为简洁，

itertools