Created
February 27, 2012 23:05
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#!/usr/bin/env python | |
import string | |
import re | |
from collections import defaultdict, Counter | |
from random import choice, randrange, randint | |
import textwrap | |
class Gibberish(object): | |
def __init__(self, text, n=4): | |
# n controls the length of the tuples | |
self.n = n | |
self.markov = defaultdict(Counter) | |
text = " ".join(textwrap.wrap(text)) | |
word_list = text.split() | |
text = " ".join(word_list) | |
capitalized = {} | |
for ix, word in enumerate(word_list): | |
# remove quotes, commas, periods ... | |
word = word.replace('"', '') | |
word = word.replace(',', '') | |
word = word.replace('.', '') | |
if ix > 0 and word[0].isupper():# and word_list[ix-1][-1:] != '.': | |
capitalized[word] = True | |
self.capitalized = [ k + " " for k in capitalized.keys() if len(k) >= n ] | |
def sliced(listin,n): | |
# non-overlapping slices, n elements at a time from listin,returned thru an iterator | |
i=0 | |
len_listin=len(listin) | |
while (i<len_listin ): | |
yield "".join(listin[i:min(len_listin,i+n)]) | |
i+=n | |
def pairwise(iterable): | |
it = iter(iterable) | |
last = next(it) | |
for curr in it: | |
yield last, curr | |
last = curr | |
for p, q in pairwise(sliced(text, n)): | |
self.markov[p][q] += 1 | |
def generate(self, n): | |
curr = choice(list(self.capitalized)) | |
yield curr[:len(curr)-self.n] # start of a random capitalized word from the text | |
curr = curr[-self.n:] | |
for i in xrange(n): | |
yield curr | |
if curr not in self.markov: # handle case where there is no known successor | |
curr = choice(list(self.markov)) | |
d = self.markov[curr] | |
target = randrange(sum(d.values())) | |
cumulative = 0 | |
for curr, cnt in d.items(): | |
cumulative += cnt | |
if cumulative > target: | |
break | |
def generate_sentence(self): | |
text = self.generate(200) | |
text = "".join(text) | |
text += "." | |
text = text.split(".")[0] | |
text += "." | |
text = text.replace(' ', '') | |
return text | |
def generate_paragraph(self): | |
sentences = [] | |
for s in range(1, randint(1, 12)): | |
sentences.append(self.generate_sentence()) | |
return " ".join(sentences) |
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