# - - - P u z z l e . w h a t S l o t s def whatSlots ( self, coord ): '''Generate the slots that include a given location. '''
For the function that finds the
instance at a given location, see Section 32, “
Puzzle.whatCell(): Is there a cell at a
given coordinate?”. Each
instance contains a list of the slots that include it; see
Section 51, “
Cell.genSlots(): Generate the slots
intersecting this cell”.
#-- 1 -- # [ if self has a cell at location (coord) -> # cell := that cell as a Cell instance # else -> # raise StopIteration ] cell = self.whatCell ( coord ) if cell is None: raise StopIteration #-- 2 -- for slot in cell.genSlots(): yield slot #-- 3 -- raise StopIteration