[Python-Dev] PEP 343 - Abstract Block Redux

[Robert Brewer]

Guido van Rossum wrote:
> I've written up the specs for my "PEP 340 redux" proposal as a
> separate PEP, PEP 343.
> 
> http://python.org/peps/pep-0343.html
> 
> Those who have been following the thread "Merging PEP 310 and PEP
> 340-redux?" will recognize my proposal in that thread, which received
> mostly positive responses there.
> 
> Please review and ask for clarifications of anything that's unclear.

There's a typo in the code snippets at the moment.

        The translation of the above statement is:

        abc = EXPR
        exc = ()  # Or (None, None, None) ?
        try:
            try:
                VAR = abc.__enter__()
                BLOCK
            except:
                exc = sys.exc_info()
                raise
        finally:
            abc.__exit__(exc)

I think you meant "abc.__exit__(*exc)". Assuming that, then "exc =
(None, None, None)" makes the most sense. If exc_info() is going to be
passed as a single arg, then I'd rather have the default "exc = ()", so
I can simply check "if exc:" in the __exit__ method.


Robert Brewer
System Architect
Amor Ministries
fumanchu at amor.org