[Python-3000] PEP 3137 plan of attack

[Guido van Rossum]

On 10/12/07, Gregory P. Smith <greg at krypto.org> wrote:
> > > - add missing methods to PyBytes (for list, see the PEP and compare to
> > > what's already there)
>
> As I work on these..  Should the mutable PyBytes_ (buffer) objects implement
> the following methods inplace and return an additional reference to self?
>
> .capitalize(), .center(), .expandtabs(), .rjust(), .swapcase(), .title(),
> .upper(), .zfill()

No... That would be a huge trap to fall in at all sorts of occasions.

> Also what about .replace() and .translate()?

> If they are not done in place should they return a new buffer (PyBytes_)
> object or a bytes (PyString_) object?  [i'd say a buffer (PyBytes_)]

They should return the same type as 'self'.

> Alos if not, should we add additional .ireplace() .ilower() etc.. methods to
> the mutable buffer (PyBytes_)?  There are speed advantages to doing many of
> those in place rather than a data copy.

I'm not sure I see the use case where this matters all that much
though. Let's say not, if only because it's not in the PEP. ;-)

-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)