binary_permutations.py

#!/usr/bin/env python

import itertools
import argparse
import sys
import time

def get_permutations(number, delimiter=''):
    for seq in itertools.product((0,1), repeat=number):
        yield delimiter.join(map(str, seq))

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Build permutations of binary sequences')
    parser.add_argument('number', type=int, help='Length of sequence to generate')
    parser.add_argument('--tab-delimited', dest='tabbed', default=False, action='store_true')
    parser.add_argument('--output', dest='file')
    args = parser.parse_args()

    delimiter = ''
    if args.tabbed:
        delimiter = "\t"

    output_file = sys.stdout
    if args.file:
        output_file = open(args.file, 'w')
    for permutation in get_permutations(args.number, delimiter=delimiter):
        output_file.write("%s\n" % permutation)
        time.sleep(0.001)