[Web-SIG] Declaring PEP 3333 accepted (was: PEP 444 != WSGI 2.0)
Alice Bevan–McGregor
alice at gothcandy.com
Fri Jan 7 07:19:13 CET 2011
On 2011-01-06 22:00:17 -0800, Graham Dumpleton said:
> - environ = {k: wsgi_string(v) for k,v in os.environ.items()}
> + environ = {k: wsgi_string(v) for k,v in list(os.environ.items())}
2to3 takes the conservative route of assuming your application treats
dict.items() as a list in all cases; this is not nessicarily true (of
course), but it is safe, and interestingly, backwards compatible.
> - raise exc_info[0], exc_info[1], exc_info[2]
> + raise exc_info[0](exc_info[1]).with_traceback(exc_info[2])
The exception raising syntax has changed; you can not re-raise an
exception using tuple notation any more. The new syntax is far
clearer, but I'm unsure of back-compatibility or even if it is possible
to emulate it completely as a polygot (2.x and 3.x w/ same code).
- Alice.
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