Chapter 9 Tutorial for Classes Not Working

[Damjan]

> class MyClass:
>     "A simple example class"
>     i = 12345
>     def f(self):
>         return 'hello world'
> 
> 
>  From here I run:
>     x = MyClass

Did you mean x = MyClass()

>     xf = x.f
>     while True:
>        print xf()
> 
> This gives the following error:
> 
> Traceback (most recent call last):
>   File "<stdin>", line 2, in ?
> TypeError: unbound method f() must be called with MyClass instance as
> first argument (got nothing instead)
> 
> Please help...this is killing me!

What you are really calling is MyClass.f without any arguments.


-- 
damjan