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41
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1 import random
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2
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3 class Dictionary(object):
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4 def __init__(self, dictionary_file='/usr/share/dict/american-english'):
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5 self.dictionary_file = dictionary_file
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6 with open(dictionary_file) as f:
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7 self.wordlist = []
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8 for line in f:
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9 line = line.strip()
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10 if not line or not line.isalpha():
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11 continue
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12 line = line.lower()
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13 self.wordlist.append(line)
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14 self.wordlist = tuple(self.wordlist)
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15 self._min_lengths = {}
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16
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17 def random_word(self, min_length=5):
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18 """
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19 choose random word
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20
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21 min_length -- minimum word length
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22 """
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23
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24 if min_length not in self._min_lengths:
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25 # cache
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26 self._min_lengths[min_lengths] = [i for i in self.wordlist
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27 if len(i) > min_length]
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28 return random.Random().choice(self._min_lengths[min_length])
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29
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