Coin Flip game between two friends: You and your friend toss a coin continuously, if the sequence HH appears first you win, if TH appears first your friend wins, who is more likely to win?

Coin flip game

import random

def coin_toss():
	friendA = 0
	friendB = 0
	previousFlip = 0

	#continue the loop until one of the friends win
	while friendA == 0 & friendB == 0:

	    #Head = 1; Tail = 2
	    coin = random.randint(1, 2)
	    # there must be at least a coin flip before we can start
	    if previousFlip != 0:
	    	#A tail and a head in a row
	    	if previousFlip == 2 and coin == 1:
	    		friendA =1
	    	#Two heads in a row
	    	elif previousFlip == 1 and coin == 1:
	    		friendB =1
	    #Take the latest coin flip result as previous coin flip result in the next toss			
	    previousFlip = coin
	# create a dictionary to map friend variable to value
	var = {friendA:"friendA",friendB:"friendB"}
	#return winner
	return var.get(max(var))
 
count = 0
friend_A_wins = 0
friend_B_wins = 0
#simulate game for 100 times
while count < 100:
	result = coin_toss()
	if result == "friendA":
		friend_A_wins +=1
	elif result == "friendB":
		friend_B_wins +=1
	count +=1

print ("Friend A wins : ",  friend_A_wins ,"times")
print ("Friend B wins : ",  friend_B_wins ,"times")