Multi thread reading a file

Sat Jul 4 20:12:22 EDT 2009

In message <1beffd94-cfe6-4cf6-
bd48-2ccac8637796 at j32g2000yqh.googlegroups.com>, ryles wrote:

>>>> # Oh... yeah. I really *did* want 'is None' and not '== None' which
>>>> # iter() will do. Sorry guys!
> 
> Please don't let this happen to you too ;)

Strange. others have got told off for using "== None" instead of "is None" 
<http://groups.google.co.nz/group/comp.lang.python/msg/a1f3170fa202af57>, 
and yet it turns out Python itself does exactly the same thing.