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annotate python/anagram.py @ 732:fc81284013bf

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author Jeff Hammel <k0scist@gmail.com>
date Tue, 03 Feb 2015 14:48:40 -0800
parents 4096771c8b9f
children 83618049c2ff
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1 #!/usr/bin/env python
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2
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3 import os
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4
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5 dictionary = []
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6
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7 def read_dictionary(f):
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8 for name in f.readlines():
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9 name = name.strip('\n')
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10 word = ''.join(name.split()).lower()
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11 dictionary.append(word)
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12
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13 def is_in(string1, string2):
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14
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15 string2 = list(string2)
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16
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17 try:
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18 for i in string1:
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19 string2.remove(i)
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20 except ValueError:
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21 return None
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22
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23 return ''.join(string2)
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24
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25 def anagramize(theword, wordlist, level=0):
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26
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27 if 0:
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28 print '%s%s : %s' % ('-' * level, theword, wordlist)
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29
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30 anagrams = []
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31
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32 # start the search with a new word
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33 for index in range(len(wordlist)):
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34 word = wordlist[index]
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35 subword = is_in(word, theword)
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36 if subword == '':
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37 anagrams.append(word)
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38 continue
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39
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40 if subword is None:
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41 continue
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42
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43
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44 sublist = [ i for i in wordlist[index:]
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45 if is_in(i, subword) is not None ]
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46 subgram = anagramize(subword, sublist, level+1)
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47
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48 if subgram is not None:
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49 anagrams += [ ' '.join((word, i)) for i in subgram ]
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50
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51 if 0:
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52 print '%s%s returning %s' % ('-' * level, theword, anagrams)
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53
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54 if anagrams:
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55 return anagrams
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56 return None
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57
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58 if __name__ == '__main__':
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59 import sys
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60 from optparse import OptionParser
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61
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62 parser = OptionParser()
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63 parser.add_option("-f", dest="filename", help="dictionary to read",
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64 default='')
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65 (options, args) = parser.parse_args()
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66
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67 if not os.path.exists(options.filename):
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68
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69 dicts = [ '/home/jhammel/docs/dict.txt',
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70 '/usr/share/dict/cracklib-small',
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71 '/usr/share/dict/american-english' ]
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72
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73 for i in dicts:
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74 if os.path.exists(i):
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75 options.filename = i
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76 break
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77 else:
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78 print 'Dictionary not found'
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79 parser.print_help()
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80 sys.exit(1)
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81
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82 if not args:
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83 print 'please provide an anagram'
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84 sys.exit(0)
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85
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86 f = file(options.filename, 'r')
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87 read_dictionary(f)
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88
21
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89 # XXX could cleanup
0
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90 anagram = ' '.join(args)
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91 anagram = ''.join(anagram.split()).lower()
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92
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93 # don't use letter names
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94 dictionary = [ i for i in dictionary if (len(i) > 1) or i in 'ai' ]
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95
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96 wordlist = [ i for i in dictionary
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97 if i and is_in(i, anagram) is not None ]
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98
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99 anagrams = anagramize(anagram, wordlist)
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100
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101 if anagrams:
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102 print '\n'.join(anagrams)