61. WordBank.__init__(): Constructor
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# - - - W o r d B a n k . _ _ i n i t _ _
def __init__ ( self, puzzle ):
'''Constructor
'''
self.puzzle = puzzle
self.maxLen = 0
self.__nWords = 0
self.__totalChoices = 0
self.__lenMap = defaultdict(set)
self.__choiceMap = defaultdict(set)
self.__wordToSlots = defaultdict(set)
For more information on the defaultdict
type, see its import in Section 6, “Imports”. The
self.__choiceMap will act like a dictionary
in most respects, but if anyone references an entry that
doesn't exist yet, the entry for that key will
automatically be initialized as an empty Python set.
