Python method I plan to use to help me with markov chains.

gistfile1.py

import random


class PercentagePicker:
    def PickRandomWord(self, setOfNumbers):
        setOfRanges = []
        maxInteger = -1
        for miniSet in setOfNumbers:
            temp = [miniSet[0], maxInteger + 1, maxInteger + miniSet[1]]
            maxInteger += miniSet[1]
            setOfRanges.append(temp)
        value = random.randint(0, maxInteger)
        for miniSet in setOfRanges:
            if miniSet[1] <= value <= miniSet[2]:
                return miniSet[0]

pp = PercentagePicker()
range1 = ["Shane", 1] #10%
range2 = ["Rocks", 3] #30%
range3 = ["Your Socks", 6] #60%

range1int = 0
range2int = 0
range3int = 0

finalSet = [range1, range2, range3]

for i in range(0, 10000):
    word = pp.PickRandomWord(finalSet)
    if word == "Shane":
        range1int += 1
    elif word == "Rocks":
        range2int += 1
    else:
        range3int += 1
print "Shane: " + str(range1int) + "\n Rocks: " + str(range2int) + "\n Your Socks: " + str(range3int)

#Prints something like this, which is about right considering the percentages
#Shane: 976
#Rocks: 2993
#Your Socks: 6031