First attempts to get something tetris-like to run on a micro:bit, created at the London Python Dojo by lukasa and inglesp.

microtetris.py

import microbit

SIZE = 5

TOP = 4
BOTTOM = 0
LEFT = 4
RIGHT = 0


def new_block():
    return (microbit.random(SIZE), TOP)


def gravity(active_block, blocks):
    new_location = (active_block[0], active_block[1] - 1)
    
    if new_location in blocks:
        return active_block, True
    elif new_location[1] == BOTTOM:
        return new_location, True
    else:
        return new_location, False
    

def draw(blocks):
    microbit.display.clear()
    for block in blocks:
        microbit.display.set_pixel(block[0], block[1], 9)


def has_lost(blocks):
    return any(block[1] == TOP for block in blocks)


def bottom_line_full(blocks):    
    return len([True for block in blocks if block[1] == BOTTOM]) == SIZE


def clear():
    for y in reversed(range(SIZE)):
        for x in reversed(range(SIZE)):
            microbit.display.set_pixel(x, y, 0)
            microbit.sleep(50)
        
    for y in reversed(range(SIZE)):
        for x in reversed(range(SIZE)):
            microbit.display.set_pixel(x, y, 9)
            microbit.sleep(10)
        
        
def main():
    blocks = []
    active_block = None
    while True:
        if active_block is None:
            active_block = new_block()
        draw([active_block] + blocks)
        active_block, complete = gravity(active_block, blocks)
        if complete:
            blocks.append(active_block)
            active_block = None
        microbit.sleep(200)
        
        if has_lost(blocks):
            microbit.music.play(microbit.music.FUNERAL)
            clear()
            break
        
        if bottom_line_full(blocks):
            draw(blocks)
            microbit.sleep(1000)
            blocks = [(block[0], block[1] -1) for block in blocks if not block[1] == BOTTOM]
        
main()