Python - how to reference one object to another

Question

more basic questions i'm struggling with...

Give the basic code below... how does the person object get the address "attached" to it.

class Person(object):
    def __init__(self, fn, ln):
        self.uid    = Id_Class.new_id("Person")
        self.f_name = fn
        self.l_name = ln

class Address(object):
    def __init__(self, st, sub):
        self.uid    = Id_Class.new_id("Address")
        self.street = st
        self.suburb = sub

s = Person('John', 'Doe')

hm = Address('Queen St.', 'Sydney')

Answer 1

Try:

class Person(object):
    def __init__(self, fn, ln, address):
        self.uid    = Id_Class.new_id("Person")
        self.f_name = fn
        self.l_name = ln
        self.address = address

class Address(object):
    def __init__(self, st, sub):
        self.uid    = Id_Class.new_id("Address")
        self.street = st
        self.suburb = sub

hm = Address('Queen St.', 'Sydney')

s = Person('John', 'Doe', hm)

Answer 2

However you want. Perhaps the simplest way is:

s.address = hm

But you don't say what you mean by "attach". If you want something more elaborate (e.g., if you want the address to be created when the Person object is created) then you'll need to explain more.