Re[2]: Re: Comprehensions

On Wed, 14 Jul 2004 07:05:35 -0700 Paul Prescod <[email protected]> wrote:

> Mark Hahn wrote:
> 
> >>paul:/tmp pprescod$ python ./test.pr
> >>[2, 4, 6]
> > 
> > 
> > How did you get this result?
> 
> Using Python.
> 
> >>Anyhow, generator comprehensions are more modern than list
> >>comprehensions and you can easily turn a generator comprehension into
> >>a list comprehension explicitly:
> >>
> >>list(x*2 for x in a)
> >>
> >>http://www.python.org/dev/doc/devel/whatsnew/node4.html
> > 
> > 
> > Ok, I'll put changing list comps into gen comps into the 1.0 list.  I had
> > never heard of them before.  Are there any other PEPs I should be aware of?
> 
> It wouldn't hurt to take a morning and just skim them. It is hard for me 
> to know what you will consider important enough to want in Prothon 1.0 
> or even Prothon 5.0. Here are some random interesting ones:
> 
> S   218  Adding a Built-In Set Object Type            Wilson
> S   246  Object Adaptation                            Evans
> S   269  Pgen Module for Python                       Riehl
> S   299  Special __main__() function in modules       Epler
> S   310  Reliable Acquisition/Release Pairs           Hudson, Moore
> S   330  Python Bytecode Verification                 Pelletier
> 
> > This is technically past the new feature submission deadline but I'll
> > stretch the rules for you. :-)
> 
> It is hard to know what of Python is in Prothon and what is missing. You 
> don't know Python well enough and I don't know Prothon well enough.
> 
I believe the following are missing from Prothon proper:

Packages: (At least I have never seen one in Prothon ) They are probably not critical
for a 1.0 release but should be added soon afterwards. It would be nice if, in keeping
with modules as ordinary objects, packages could just be a special module, and not
tied directly to an operating system's directory structure.

Slice lists and ellipses in subsripts for user defined sequences.

Lenard Lindstrom
<[email protected]>