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import random
from collections import defaultdict, namedtuple
def penultimate_five_gram(hist):
return ''.join(hist[-6:-1])
def last_five_gram(hist):
return ''.join(hist[-5:])
def chunks(l, n):
"""Yield successive n-sized chunks from l."""
for i in range(0, len(l), n):
yield l[i:i + n]
ctrs = defaultdict(lambda: [0,0])
hist = []
for i in range(100):
if len(hist) < 6 or ctrs[last_five_gram(hist)][0] == ctrs[last_five_gram(hist)][1]:
next_letter = random.choice(['L','R'])
if ctrs[last_five_gram(hist)][0] < ctrs[last_five_gram(hist)][1]:
next_letter = 'L'
next_letter = 'R'
if len(hist) >= 6:
if hist[-1] == 'L':
ctrs[''.join(penultimate_five_gram(hist))][0] += 1
ctrs[''.join(penultimate_five_gram(hist))][1] += 1
print(list(chunks(''.join(hist), 5)))
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