254 http://inventwithpython.com/hacking

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9. 
   


10. 
    


11. def getWordPattern(word):


12. 
    

    Returns a string of the pattern form of the given word.

    
    


13. 
    

    e.g. '0.1.2.3.4.1.2.3.5.6' for 'DUSTBUSTER'

    
    


14. word = word.upper()


15. nextNum = 0


16. letterNums = {}


17. wordPattern = []


18. 
    


19. for letter in word:


20. if letter not in letterNums:


21. letterNums[letter] = str(nextNum)


22. nextNum += 1


23. wordPattern.append(letterNums[letter])


24. return '.'.join(wordPattern)


25. 
    


26. 
    


27. def main():


28. allPatterns = {}


29. 
    


30. fo = open('dictionary.txt')


31. wordList = fo.read().split('\n')


32. fo.close()


33. 
    


34. for word in wordList:


35. 
    

    Get the pattern for each string in wordList.

    
    


36. pattern = getWordPattern(word)


37. 
    


38. if pattern not in allPatterns:


39. allPatterns[pattern] = [word]


40. else:


41. allPatterns[pattern].append(word)


42. 
    


43. 
    

    This is code that writes code. The wordPatterns.py file contains

    
    


44. 
    

    one very, very large assignment statement.

    
    


45. fo = open('wordPatterns.py', 'w')


46. fo.write('allPatterns = ')


47. fo.write(pprint.pformat(allPatterns))


48. fo.close()


49. 
    


50. 
    


51. if name == 'main':


52. main()