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import mcpi.minecraft as minecraft
import mcpi.block as block
from math import *

colors = [14, 1, 4, 5, 3, 11, 10]

mc = minecraft.Minecraft.create()
height = 60

mc.setBlocks(-64,0,0,64,height + len(colors),0,0)
for x in range(0, 128):
    for colourindex in range(0, len(colors)):
        y = sin((x / 128.0) * pi) * height + colourindex
        mc.setBlock(x - 64, int(y), 0, block.WOOL.id, colors[len(colors) - 1 - colourindex])

Put into the api/python folder, then, cd to that folder and execute python whateveryounamedit.py while Minecraft is running.

e.g.
Download the script to /home/pi/mcpi/api/python/a.py

Open terminal
cd /home/pi/mcpi/api/python
python a.py



I tested this by using RaspberryJuice to simulate Pi edition, so I'm curious to see whether this runs on a real Pi.

I've improved it...

But

Fixed the integer conversion issue so that it runs on an actual Pi.

Quote from OfficialFarman432

I type import mcpi.minecraft as minecraft and it says error no module named mcpi.minecraft

Run the script in /home/pi/mcpi/api/python (the module error basically means that it can't find the Minecraft API, which it expects to be in mcpi/minecraft.py.