In [ ]:
#! /usr/bin/python
import mcpi.minecraft as minecraft
import mcpi.block as block

""" clearZone clears an area and sets a stone floor
    takes two x,z pairs clears everything above 0y and then sets
    a stone floor at -1y
    @author: goldfish"""

def clearZone( alocx, alocz, blocx, blocz ):
    mc.setBlocks( alocx, 0, alocz, blocx, 64, blocz, block.AIR )
    mc.setBlocks( alocx, -1, alocz, blocx, -1, blocz, block.STONE )

if __name__ == "__main__":
    mc = minecraft.Minecraft.create()
    clearZone( -20, -20, 20, 20 )