Does this code create a circular reference ?

[Greg Ewing]

Ionel Simionescu wrote:
> 
> class child:
>   def __init__(self, parent):
>     self.parent = parent

>   def do_something(self):
>     pass

> class headache:
>   def method(self):
>     a_child = child(self)
>     a_child.do_something()

As long as a_child.do_something() doesn't cause a reference to
a_child to be stored in its parent (or grand-parent, etc.), there 
is no problem. When headache.method() returns, its local references
will disappear, and the child will be deallocated. No aspirin
required.

Greg