CellAuto.py - Python terminal cellular automata.

cellauto.py

#! /usr/bin/env python3
from shutil import get_terminal_size
from random import choice

columns = get_terminal_size().columns - 4
rows = get_terminal_size().lines

options = [' ', '█']

def ca_rule(row, options):
    new_row = ""
    for i in range(0, len(row)):
        score = 0
        if i == 0:
            # At the left of the row; check left to the furthest right
            if row[i + 1] == options[1]:
                score += 1
            if row[len(row) - 1] == options[1]:
                score += 1

        elif i == len(row) - 1:
            # At the right of the row; check right to the furthest left
            if row[0] == options[1]:
                score += 1
            if row[i - 1] == options[1]:
                score += 1

        else:
            # in the middle of the row.
            if row[i + 1] == options[1]:
                score += 1
            if row[i - 1] == options[1]:
                score += 1

        if score == 0 or score == 2:
            new_row += options[0]
        else:
            new_row += options[1]

    return new_row


row = ""
for _ in range(0, columns):
    row += choice(options)


for linenum in range(0, rows):
    print("{:03} {}".format(linenum, row))
    row = ca_rule(row, options)