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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def count_single_dots(self):
 """Count all strokes of this recording that have only a single dot. """

        pointlist = self.get_pointlist()
        single_dots = 0
        for stroke in pointlist:
            if len(stroke) == 1:
                single_dots += 1
        return single_dots