[Python-3000] Support for PEP 3131

[Steve Howell]

--- Steve Howell <showell30 at yahoo.com> wrote:
> --- Guido van Rossum <guido at python.org> wrote:
> 
> > On 5/25/07, Jim Jewett <jimjjewett at gmail.com>
> wrote:
> > > On 5/24/07, Guido van Rossum <guido at python.org>
> > wrote:
> > >
> > > > It doesn't look like any kind of global flag
> > passed to the interpreter
> > > > would scale -- once I am using a known trusted
> > contribution that uses
> > > > a different character set than mine, I would
> > have to change the global
> > > > setting to be more lenient, and the leniency
> > would affect all code I'm
> > > > using.
> > >
> > > Are you still thinking about the single on/off
> > switch?
> > >
> > > I agree that saying "Japanese identifiers are OK
> > from now on" still
> > > shouldn't turn on Cyrillic identifiers.  I think
> > the current
> > > alternative boils down to some variant of
> > >
> > >     python -idchars allowedchars.txt
> > >
> > > where allowedchars.txt would look something like
> > >
> > >
> > > 0780..07B1    ; Thaana
> > >
> > > or
> > >
> > > 10000..100FA  ; Linear_B plus some blanks I was
> > too lazy to exclude
> > >
> > > (These lines are based on the unicode
> Scripts.txt,
> > and use character
> > > ranges instead of script names so that you can
> > exclude certain symbols
> > > if you want to.)
> > 
> > I still think such a command-line switch (or
> > switches) is the wrong
> > approach. What if I have *one* module that uses
> > Cyrillic legitimately.
> > A command-line switch would enable Cyrillic in
> *all*
> > modules.
> > 
> 
> I agreed with you at first that once you allow
> Cyrillic code from your good, trusted buddy that
> codes
> in Cyrillic, you essentially open the door for all
> bad
> people that code in Cyrillic, so enabling/requiring
> a
> flag that trusts/distrusts Cyrillic code is
> basically
> an exercise in futility.
> 
> But why couldn't there be a mechanism to accept only
> individual non-ascii modules as trusted modules?
> 

Never mind.  I already know the answer to my question.
 The mechanism to import only "trusted modules" is the
import statement itself, backed by unit tests, trust
models, etc.

I don't think my somewhat fallacious reasoning
invalidates the argument for making Python parochial
by default, though.




       
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