class Person:
    """
    An object representing a person.  Contructor must be given their
    last name and first name (both strings).
    """
    def __init__(self, lname, fname):
        """
        Create a new person object, given their last name and first
        name (both strings).
        """
        self.lname = lname
        self.fname = fname

    def __repr__(self):
        """
        Produce the representation of the object that is used when
        it's printed as part of a list.
        """
        return "Person(%r, %r)" % (self.lname, self.fname)

    def __str__(self):
        """
        Produce the representation of the object that's used when it's
        printed by itself.
        """
        return self.lname + ", " + self.fname

    def __cmp__(self, other):
        """
        Compare to another person.
        """
        if self.lname != other.lname:
            return cmp(self.lname, other.lname)
        else:
            return cmp(self.fname, other.fname)

    def lastname(self):
        """
        Return the person's last name.
        """
        return self.lname
        
    def firstname(self):
        """
        Return the person's first name.
        """
        return self.fname