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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 removeBPoint(self, bPoint):
 """ Remove the bpoint from the contour. bpoint can be a point object or an index. """

        if not isinstance(bPoint, int):
            bPoint = bPoint.index
        bPoint = normalizers.normalizeIndex(bPoint)
        if bPoint >= self._len__points():
            raise ValueError("No bPoint located at index %d." % bPoint)
        self._removeBPoint(bPoint)