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--
--Guido van Rossum (python.org/~guido)
*Pronouns: he/
On Fri, Sep 24, 2021 at 19:49 Christopher Barker
wrote:
> Alternatively, take the approach taken with distutils and setuptools—
> officially accept that a full featured test framework will be left to third
> parties.
>
I think this is by far the best option. Pytest can evolve much faster than
On Fri, Sep 24, 2021 at 22:07 Stephen J. Turnbull <
stephenjturnb...@gmail.com> wrote:
> Guido van Rossum writes:
>
> > I think this is by far the best option. Pytest can evolve much faster
> than
> > the stdlib.
>
> Is there no room for making it easier to do
On Sat, Sep 25, 2021 at 00:56 Steven D'Aprano wrote:
> On Fri, Sep 24, 2021 at 11:23:00PM -0700, Guido van Rossum wrote:
>
> > > Is there no room for making it easier to do this with less invasive
> > > changes to the stdlib, or are Steven d'A's "heroic mea
he Groovy community, also used by
> projects such as `Spock`_.
>
> On top of that, it is very much needed in the Python community as well:
>
> * `Power Assertion was explicitly requested`_ as a feature in the
> `Nimoy`_ testing framework
> * There's a `similar feature
ke to remind various other posters that sarcasm is *not* a
good way to welcome newbies. The name of the list is python-ideas, not
python-ideas-to-shoot-down-sarcastically.
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--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
You have to check the C code to be sure, but IIRC the latest dict
implementation has a dense array of the values in insert order, and the
hash table (which has gaps) contains indexes into the values array. So you
could easily index into the values array (which I believe also has the
keys) in O(1)
ause unlike lists the over-allocation isn't permanent."
Finally, the bytecode generated for (*a, *b) creates a list first and then
turns that into a tuple (which will be allocated with the right size since
it's known at that point).
--
--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(
I suspect there won’t be enough support for this proposal to ever make it
happen, but at the very least could you think of a different token? The
three left arrows just look too weird (esp. in the REPL examples, where
they strongly seem to suggest a false symmetry with the ‘>>>’ prompt. How
did
Seems sensible to me. I’d write the equivalency as
for x in y: answer.extend([…x…])
On Sat, Oct 16, 2021 at 07:11 Erik Demaine wrote:
> Extended unpacking notation (* and **) from PEP 448 gives us great ways to
> concatenate a few iterables or dicts:
>
> ```
> (*it1, *it2, *it3) # tuple with
as you seemed to imply).
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--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
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--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
<http://feministing.com/2015/02/03/how
ich
operation is implemented most efficiently. Though you should just measure
it for various N.
Are you actually observing that people are doing this with regular lists?
Don't people working with Big Data usually use Pandas, which is built on
NumPy arrays and custom data structures?
--
--Guido va
lt arguments.
(You could make something up that uses dynamic scoping, but that's a whole
different can of worms.)
--
--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
<http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-
Good catch! You can submit a PR or issue to the peps project in the Python
organization on GitHub.
On Fri, Dec 3, 2021 at 00:24 wrote:
> Hi!
> When I read PEP7 and check Cpython source code, I found a deficiency that
> in https://www.python.org/dev/peps/pep-0007/#code-lay-out.
> In this
+1
On Thu, Nov 18, 2021 at 09:31 Michael Foord wrote:
>
>
> On Thu, 18 Nov 2021 at 04:38, Steven D'Aprano wrote:
>
>> On Wed, Nov 17, 2021 at 02:26:16PM -, tmkehrenb...@gmail.com wrote:
>>
>> > @dataclass
>> > class A:
>> > """Docstring for class A."""
>> > x: int
>> >
One thought: No.
On Thu, Nov 11, 2021 at 05:41 Matt del Valle wrote:
> So I was reading the docs for the `threading` module and I stumbled upon
> this little note:
>
> Note:
>
> In the Python 2.x series, this module contained camelCase names for some
> methods and functions. These are
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--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
<http://feministing
I’m with Steven.
On Fri, Oct 29, 2021 at 06:22 Chris Angelico wrote:
> On Fri, Oct 29, 2021 at 11:52 PM Steven D'Aprano
> wrote:
> > > Except that that's still backward-incompatible, since None is a very
> > > common value.
> >
> > How is it backwards incompatible? Any tool that looks at
und. Everywhere else in Python, undefined names are runtime errors
(NameError or UnboundLocalError).
--
--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
<http://feministing.com/2015/02/03/how-using-they-as-a-sing
Agreed, class namespaces are weird. :-)
On Sun, Oct 31, 2021 at 23:38 Chris Angelico wrote:
> On Mon, Nov 1, 2021 at 5:15 PM Greg Ewing
> wrote:
> >
> > On 1/11/21 4:59 am, David Mertz, Ph.D. wrote:
> > > b = b
> >
> > I don't want to live in a universe where this could be anything
> >
t 25, 2021 at 10:49 AM Chris Angelico wrote:
> On Tue, Oct 26, 2021 at 4:36 AM Guido van Rossum wrote:
> >
> > On Mon, Oct 25, 2021 at 10:28 AM Chris Angelico
> wrote:
> >>
> >> [...] The two options on the table are:
> >>
> >> 1) Allow referen
I like that you're trying to fix this wart! I think that using a different
syntax may be the only way out. My own bikeshed color to try would be `=>`,
assuming we'll introduce `(x) => x+1` as the new lambda syntax, but I can
see problems with both as well :-).
--
--Guido van Rossum (pyth
> fn2(defer: x) # look for local a, b within fn2() if needed
> > # ... other stuff
> > return x # return 8 here
> >
>
> How would it know to look for a and b inside fn2's scope, instead of
> looking for x inside fn2's scope?
>
I am worried that this si
> 严懿宸(文极) via Python-ideas writes:
> > Currently, we’ve made it a third-party library and have been
> > working on open-sourcing.
Stephen J. Turnbull wrote:
> Thank you! I guess "working on" means "the lawyers have it" so we'll
> be patient. :-)
> I'm not sure whether your purpose is to get
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