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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 _set_range(self, init):
 """ Reset the camera view using the known limits. """


        if init and (self._scale_factor is not None):
            return  # We don't have to set our scale factor

        # Get window size (and store factor now to sync with resizing)
        w, h = self._viewbox.size
        w, h = float(w), float(h)

        # Get range and translation for x and y
        x1, y1, z1 = self._xlim[0], self._ylim[0], self._zlim[0]
        x2, y2, z2 = self._xlim[1], self._ylim[1], self._zlim[1]
        rx, ry, rz = (x2 - x1), (y2 - y1), (z2 - z1)

        # Correct ranges for window size. Note that the window width
        # influences the x and y data range, while the height influences
        # the z data range.
        if w / h > 1:
            rx /= w / h
            ry /= w / h
        else:
            rz /= h / w

        # Convert to screen coordinates. In screen x, only x and y have effect.
        # In screen y, all three dimensions have effect. The idea of the lines
        # below is to calculate the range on screen when that will fit the
        # data under any rotation.
        rxs = (rx**2 + ry**2)**0.5
        rys = (rx**2 + ry**2 + rz**2)**0.5

        self.scale_factor = max(rxs, rys) * 1.04