import russian

def open_doll(d):
    """Input: a Russian Doll
    Opens up the Russian Doll, d
    """
    print("My name is "+ d.name)
    if d.hasSeam:
        inner = d.innerDoll
        open_doll(inner)
    else:
        print("That's it!")

d1 = russian.Doll("Dmitry", None)
d2 = russian.Doll("Catherine", d1)
d3 = russian.Doll("Boris", d2)
d4 = russian.Doll("Aleksandr", d3)

open_doll(d4)