[Python-Dev] pyc files, constant folding and borderline portability issues

[Cesare Di Mauro]

In data 07 aprile 2009 alle ore 17:19:25, <skip at pobox.com> ha scritto:

>
>     Cesare> The only difference at this time is regards invalid operations,
>     Cesare> which will raise exceptions at compile time, not at running
>     Cesare> time.
>
>     Cesare> So if you write:
>
>     Cesare> a = 1 / 0
>
>     Cesare> an exception will be raised at compile time.
>
> I think I have to call *bzzzzt* here.  This is a common technique used
> during debugging.  Insert a 1/0 to force an exception (possibly causing the
> running program to drop into pdb).  I think you have to leave that in.
>
> Skip

Many tests rely on this, and I have changed them from something like:

try:
   1 / 0
except:
  ....

to

try:
  a = 1; a / 0
except:
  ....

But I know that it's a major source of incompatibilities, and in the final
code I'll enabled it only if user demanded it (through a flag).

Cesare