boybaby.py

from collections import Counter
from random import sample


def try_boy():
    result = []
    child = sample(("Boy", "Girl"), 1)[0]
    result.append(child)
    if child == 'Girl':
        result.extend(try_boy())
    return result


if __name__ == "__main__":
    result = Counter()
    for i in range(10000):
        children = try_boy()
        result.update(children)
    print result