diff --git a/balazs/python-the-hard-way/ex42/ex42.py b/balazs/python-the-hard-way/ex42/ex42.py
new file mode 100644
index 0000000..d95965e
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+++ b/balazs/python-the-hard-way/ex42/ex42.py
@@ -0,0 +1,51 @@
+## Animal is-a object (yes, sort of confusing) look at the extra credit
+class Animal(object):
+
+Pass
+
+## is-a
+class Dog(Animal):
+
+    def __init__(self, name):
+        ## has-a
+        self.name = name
+
+
+## is-a
+class Person(object):
+
+
+    def __init__(self, name):
+        ## has-a
+        self.name = name
+
+
+## is-a
+class Employee(Person):
+
+
+    def __init__(self, name, salary):
+        ## ?? hmm what is this strange magic? dunno, 
+        super(Employee, self).__init__(name)
+        ## has-a
+        self.salary = salary
+
+        
+
+## rover is-a Dog
+rover = Dog("Rover")
+
+## is-a
+satan = Cat("Satan")
+
+## is-a
+mary = Person("Mary")
+
+## ??
+mary.pet = satan
+
+## is-a-n employee, has x money
+frank = Employee("Frank", 120000)
+
+## is-a
+flipper = Fish()