from random import randrange

trials = 10000

totalflips = 0        # total number of flips over all trials
maxflips = 0          # biggest number of flips in a single trial

for t in range(trials):

    count = 1         # we will certainly do the first flip
    while randrange(2) != 0:
        count += 1

    totalflips += count
    maxflips = max(count, maxflips)


print('Average number of flips', totalflips/trials)
print('Maximum number of flips', maxflips)