| From: "Steve Nelson"
|
| Further to my previous puzzling, I've been working out the best way to
| chop a string up into n-sized words:
|
I think the follow use of groupby is from Raymond Hettinger from ASPN recipes.
The batch() function will return an iterable to you in user-definable sized
sets.
####
from itertools import groupby
def batch(iterable, size):
def ticker(x, s=size, a=[-1]):
r = a[0] = a[0] + 1
return r // s
for k, g in groupby(iterable, ticker):
yield g
s='this is my string to parse up.'
for i in batch(s,4):
print list(i)
####
The output is lists of (in this case) 4 characters; the last group is shorter,
but you already know how to fix that.
####
['t', 'h', 'i', 's']
[' ', 'i', 's', ' ']
['m', 'y', ' ', 's']
['t', 'r', 'i', 'n']
['g', ' ', 't', 'o']
[' ', 'p', 'a', 'r']
['s', 'e', ' ', 'u']
['p', '.']
####
/c
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