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Python: Auto Rainbow

This cool little program designed by ‘500 Internal Server Error‘, automatically builds a rainbow in your MCPI world, upon loading the python file.


The code is as follows:

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,, colors[len(colors) - 1 - colourindex])


The original thread where the program was shared can be found here.

To run the program, open up ‘LeafPad‘, copy this code into it and save it in /mcpi/api/python as a .py file. Save it as Then, once you have a MCPI world loaded up, open up ‘Terminal‘ and navigate to where you saved the file using cd and type python