import time
import random
headcount = tailcount = 0
userinput = ' '
print ("now tossing a coin...")
while userinput.lower () != "q":
    flip = random.choice(['heads', 'tails'])
    if flip == 'heads':
        headcount += 1
        print ("heads! the number of heads is now %d" % headcount)
    else:
        tailcount += 1
        print ("tails! the number of tails is now %d" % tailcount)
    print ("press 'q' to quit")
    userinput = input ("or another key to flip again:")
    print("the total number of heads is now %d" % headcount)
    print("the total number of tails is now %d" % tailcount)