Need help with Python scoping rules

[kj]

In <mailman.407.1251237485.2854.python-list at python.org> John Posner <jjposner at optimum.net> writes:
>Stephen Hansen said:
>> This sounds like a fundamental confusion -- a namespace is not 
>> equivalent to a scope, really, I think.
>> ...
<snip>

Hmm.  I can't find Stephen Hansen's original post anywhere.  Where
did you come across it?

Is there an *official* write-up where these issues are discussed?
To put it differently, where exactly in the Python docs would
someone learning Python go to answer my original query?

TIA!

kynn