Makes arbitrary decisions for you

decide.py

#!/usr/bin/env python
#
# Usage:
# decide.py ==> yes/no, 50/50
# decide.py 0.1 ==> gives a 10% chance of yes
# decide.py foo bar 3xbaz ==> gives a choice from foo bar baz baz baz
#
import sys
import random

args = sys.argv[1:]

if len(args) == 0:
    args = [ "yes", "no" ]

if len(args) == 1:
    p = float(args[0])
    r = random.random()

    print "%f<=>%f => %s" % (r,p, "Yes" if r <= p else "No")
    sys.exit(0)

    
def parse_arg(s):

    try:
        a,b = s.split("x",1)
        n = int(a)
    except:
        return [s]

    return [b] * n


choices = []

for a in args:
    choices += parse_arg(a)


result = random.sample(choices, 1)

print "Choices: %s" % str(choices)
print result[0]