def setSkylightAt(self, x, y, z, lightValue):
        if y < 0 or y >= self.Height:
            return 0
        zc = z >> 4
        xc = x >> 4

        xInChunk = x & 0xf
        zInChunk = z & 0xf

        ch = self.getChunk(xc, zc)
        skyLight = ch.SkyLight

        oldValue = skyLight[xInChunk, zInChunk, y]

        ch.chunkChanged(False)
        if oldValue < lightValue:
            skyLight[xInChunk, zInChunk, y] = lightValue
        return lightValue < oldValue
dataset/ETHPy150Open mcedit/pymclevel/infiniteworld.py/ChunkedLevelMixin.setSkylightAt/swapped operands of `<`