[Python-Dev] rationale for the no-new-features approach

[Bob Ippolito]

On Mar 9, 2005, at 8:03 AM, Skip Montanaro wrote:

>
>     Anthony> Goal 4: Try and prevent something like
>     Anthony>             try:
>     Anthony>                   True, False
>     Anthony>             except NameError:
>     Anthony>                   True, False = 1, 0
>     Anthony>             from ever ever happening again.
>
> I will point out that in the transition from 2.3 to 2.4 our code that 
> uses
> sets has
>
>     try:
>         x = set
>     except NameError:
>         from sets import Set as set
>     else:
>         del x
>
> Rather ugly.  I suppose I could just put the necessary incantation in
> sitecustomize to dump the set name in builtins, but it would be kinda 
> nice
> if this sort of thing could be avoided in the future.

try:
     set
except NameError:
     from sets import Set as set


You don't need the rest.

-bob