How do I get user input and pass it to my class?

class Tutu():
    def __init__(self, name, color):
        self.color = color
        self.name = name

    def introduce(self):
        print("Hey  {0} I am {1}".format(self.name, self.color) )

zizi = Tutu("Joe", "Potato")
zizi.introduce()


class Zuzu(Tutu):
    def __init__(self, potato):
        self.potato = potato

    def introduce(self):
        print("What's up {0}".format(self.potato))

x = input()
pipi = Zuzu(x)
pipi.introduce()

NameError: name 'd' is not defined