Transitivity and direction of "binding" (was Re: Comments requested: brief summary of Python)

[Christopher A. Craig]

Michael Hudson <mwh at python.net> writes:

> > Why?
> 
> A name has zero or one bindings, but an object may have an arbitrary
> number of bindings to it.
> 

Additionally if you run the function 'def t(): a+=1' you get an
UnboundLocalError, indicating that the local name "a" is not bound to
any object.

So there you have it, definitive proof from the interpreter itself.
<.9 wink>

-- 
Christopher A. Craig <list-python at ccraig.org>
Perl is like Vice Grips; You can do anything with it but it is the wrong tool
for every job. -- Bruce Eckel