arena_ascii.py

import errno
import os
import sys

if __name__ == '__main__':
    try:
        with open(sys.argv[1], 'r') as infile:
            text = infile.readlines()
    except IndexError:
        print('Usage: python arena_ascii.py txt_file_path')
        sys.exit()

    lines_per_block = 84
    row = [[],[],[]]

    folder = 'ascii-' + sys.argv[1].split('.')[0]

    try:
        os.makedirs(folder)
    except OSError as exception:
        if exception.errno != errno.EEXIST:
            raise

    for nline in range(len(text)):
        if (nline + 1) % lines_per_block == 0:
            nrow = int((nline + 1) / lines_per_block - 1)
            for ncol in range(3):
                with open('{}/{}-{}.txt'.format(folder, nrow, ncol), 'w') as outfile:
                    outfile.write('\n'.join(row[ncol]))
            row = [[],[],[]]
        line = text[nline].strip()
        row[0].append(line[:160])
        row[1].append(line[160:320])
        row[2].append(line[320:480])