[Tutor] Random in loop

[ryan luna]

Hello, Im kinda stuck on something in the book Python
Programming.
The "Challenage" is to make a progam that flips a coin
100 times and then tells you the number of heads and
tails.
here is what i have so far,
Code:

import random

coin = 0
heads = 0
tails = 0

heads_tails = random.randrange(2)

while coin < 100:
    coin += 1
    if (heads_tails == 0):
        heads += 1
    elif (heads_tails == 1):
        tails += 1


print coin, heads, tails

raw_input("Enter to exit")

I know what my problem is, i just dont know the how to
fix it.
(Or i could just be writing this wrong all together)
If im even goin at this the right way my problem is i
need to randomly pick a new number at the beggening of
each loop but i dont know how! other then that i think
the rest of the code is good? Thanks for any help ^^