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import string
chars = string.lowercase
def flub(word, wordlist):
for i in range(len(word)):
for c in chars:
new_word = word[:i] + c + word[i+1:]
if new_word != word and new_word in wordlist:
yield new_word
def makegraph(wordlist):
g = {}
# bit of a hack to make an undirected graph
for w in wordlist:
for v in flub(w, wordlist):
g.setdefault(w, set()).add(v)
g.setdefault(v, set()).add(w)
return g
def main():
f = file('/usr/share/dict/words', 'rb')
bylength = {}
for line in f:
line = line.strip().lower()
bylength.setdefault(len(line), set()).add(line)
for length, wordlist in bylength.iteritems():
print "processing", length
f = file('graph_%d.py' % length, 'wb')
f.write('# -*- encoding: latin-1 -*-\n')
f.write('graph = ' + repr(makegraph(wordlist)) + '\n')
f.close()
if __name__ == '__main__':
main()
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