Simulate as many coin flips as your computer can handle

coin_flip_sim.py

import random
flips = int(input('how many times do you want to flip the coin? '))
outcomes = ['head','tail']
wieghts = [.5,.5]
head=0
tail=0
for flip in range(flips):
	h_t = random.choice(outcomes)
	if h_t == 'head':
		head += 1
	else:
		tail += 1
def percentage(ht,outcome):
	global flips
	percent = outcome/flips * 100
	print('{}: {}%'.format(ht,"%.2f" % percent))
percentage('head',head)
percentage('tail',tail)

thanks to An-Nguyen1 for the original gist