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50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
#!/usr/bin/env python3
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import random
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class Markov(object):
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def __init__(self, text=None):
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self.cache = {}
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self.words = []
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if text is None:
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text = ""
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self.words = text.split()
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self.word_size = len(self.words)
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self.database()
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def triples(self):
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""" Generates triples from the given data string. So if our string were
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"What a lovely day", we'd generate (What, a, lovely) and then
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(a, lovely, day).
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"""
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if len(self.words) < 3:
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return
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for i in range(len(self.words) - 2):
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yield (self.words[i], self.words[i+1], self.words[i+2])
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def database(self):
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for w1, w2, w3 in self.triples():
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key = (w1, w2)
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if key in self.cache:
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self.cache[key].append(w3)
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else:
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self.cache[key] = [w3]
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def generate_markov_text(self, size=50):
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seed = random.randint(0, self.word_size-3)
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seed_word, next_word = self.words[seed], self.words[seed+1]
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while "!kvl" in seed_word:
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seed = random.randint(0, self.word_size-3)
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seed_word, next_word = self.words[seed], self.words[seed+1]
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w1, w2 = seed_word, next_word
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gen_words = []
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for i in range(size):
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gen_words.append(w1)
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if "!kvl" in w2 or not (w1, w2) in self.cache:
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print("Generated text")
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break
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else:
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w1, w2 = w2, random.choice(self.cache[(w1, w2)])
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return ' '.join(gen_words)
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