[Tutor] number game

[mike viceano]

i wrote a program that guesses number in the most effective way i could 
think of but i keep running into endless loops any help fixing it would be 
great :)

here it is:


def num(number):
    r=input("range >")
    ran=range(r+1)
    guess=r/2
    print guess
    guesses=1
    while guess!=number:
        if guess < number:
            guess= ((r-guess)/2)+guess
            print guess
            guesses=guesses+1
        elif guess > number:
            guess= ((r-guess)/2)-guess
            print guess
            guesses=guesses+1
    print "i got the number",number,"in",guesses,"guesses"



my only idea is to make it so it dosint re guess numbers but i would rather 
just find out what is wrong
and fix it

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