On 11 August 2017 at 05:49, Steven D'Aprano wrote:
> On Thu, Aug 10, 2017 at 01:25:24PM -0700, Chris Barker wrote:
>> On Thu, Aug 10, 2017 at 8:39 AM, Paul Moore wrote:
>>
>>
>> > Also, there's a potential issue
>> > here - consider
>> >
>> > [expr for var in even_numbers() if is_odd(var) wh
Before I done my firesuit, I'd like to say that I much prefer python and I rail
on JS whenever I can. However these days it is quite common to be doing work in
both Python and Javascript. Harmonizing the two would help JS developers pick
up the language as well as people like me that are stuck w
> -Original Message-
> From: Python-ideas [mailto:python-ideas-bounces+tritium-
> list=sdamon@python.org] On Behalf Of Jason H
> Sent: Friday, August 11, 2017 10:58 AM
> To: python-ideas@python.org
> Subject: [Python-ideas] Towards harmony with JavaScript?
>
> Before I done my firesu
On Sat, Aug 12, 2017 at 12:57 AM, Jason H wrote:
> Before I done my firesuit, I'd like to say that I much prefer python and I
> rail on JS whenever I can. However these days it is quite common to be doing
> work in both Python and Javascript. Harmonizing the two would help JS
> developers pick
Thank for all the feedback so far, even if it's not the most enthusiastic
response to the ideas.
One thing I missed, and I don't know how I could (total face-palm) is:
4. Other list methods: i.e. and specifically: [].push(item) vs [].append()
> Sent: Friday, August 11, 2017 at 10:57 AM
> From:
On Sat, Aug 12, 2017 at 1:35 AM, Jason H wrote:
> Thank for all the feedback so far, even if it's not the most enthusiastic
> response to the ideas.
>
> One thing I missed, and I don't know how I could (total face-palm) is:
> 4. Other list methods: i.e. and specifically: [].push(item) vs [].appen
> "Jason" == Jason H writes:
Jason> While JS is strongly for web (Node.JS, Browsers) and Python has a
weak
Jason> showing (Tornado, Flask), Python is very popular on everything else
on
Jason> the backend where JS isn't and isn't likely to be. The I'm making
Jason> point is
On Sat, Aug 12, 2017 at 3:04 AM, Alberto Berti wrote:
> For the goal of reducing the friction (the mind switching when working
> with both the languages) I have created a tool (
> https://github.com/azazel75/metapensiero.pj ) which allows me to write
> valid Python and translates this to nice JS w
On 2017-08-11 07:57, Jason H wrote:
Before I done my firesuit, I'd like to say that I much prefer python
and I rail on JS whenever I can. However these days it is quite
common to be doing work in both Python and Javascript. Harmonizing
the two would help JS developers pick up the language as well
> "Chris" == Chris Angelico writes:
Chris> On Sat, Aug 12, 2017 at 3:04 AM, Alberto Berti
wrote:
>> For the goal of reducing the friction (the mind switching when working
>> with both the languages) I have created a tool (
>> https://github.com/azazel75/metapensiero.pj ) whi
On Sat, Aug 12, 2017 at 5:13 AM, Alberto Berti wrote:
> Chris> What do you do about all the places where the languages have
> Chris> significantly different semantics? For instance, a Python integer
> can
> Chris> store more values than a Python float (which is broadly compatible
>
On 11 August 2017 at 16:19, Chris Angelico wrote:
> On Sat, Aug 12, 2017 at 5:13 AM, Alberto Berti
> wrote:
> > Chris> What do you do about all the places where the languages have
> > Chris> significantly different semantics? For instance, a Python
> integer can
> > Chris> store more
On Sat, Aug 12, 2017 at 5:42 AM, Joao S. O. Bueno wrote:
>
>
> Well,I hope you both had at least skimmed over "brython" - it started a
> couple years ago
> with somewhat the same "won't o full Python purpose" - but nowadays they
> have a
> very conformant implementation of Python3 that is transpi
On Sat, Aug 12, 2017 at 5:47 AM, Chris Angelico wrote:
>
> Taking this off the list as it's no longer on topic.
... at least, I *thought* I was taking it off list. Between me and
Gmail, some thoughts got crossed. Sorry!
ChrisA
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> result = []
> for x in sequence:
> if condition:
> result.append(expression)
> else:
> break
>
> which could be written
>
> [expression for x in sequence if condition break]
>
> It's what I thought too. Adding a `while` clause here just overly
> complicates the under
Though I still dop'nt think using "while" would really introduce that much
confusion -- sure, it doesn't introduce a new loop, but, as someone pointed
out earlier in this thread it really is only changing from a:
"while do"
to a
"do while"
construct -- so means pretty much the same thing.
+1
> > Taking this off the list as it's no longer on topic.
>
not totally -- I'm going to add my thoughts:
1) If you want a smoother transition between server-side Python and
in-browser code, maybe you're better off using one of the "python in the
browser" solutions -- there are at least a few viab
> "Chris" == Chris Angelico writes:
Chris> Speaking as someone whose day job is teaching Python and
Chris> JavaScript,
I have some "I'm a good teacher" stickers laying somewhere, do you want
me to send them to you so you can put them somewhere?
Chris> I don't like the idea of
On Sat, Aug 12, 2017 at 6:31 AM, Alberto Berti wrote:
> It's not really so confusing, most code I wrote with it it's perfectly
> understandable Python code. For me, one thing is the language, one other
> thing are the libraries or the builtin classes it's usually shipped
> with.
>
> The tool reads
Python is not a good fit for the browser, in part, because of the syntax.
JavaScript has issues, but its syntax is better suited to creating GUIs in
the browser. For example, in browsers everything revolves around a single
threaded event loop, so you have a lot of callbacks and event handlers,
whic
Hi,
This is a new PEP to implement Execution Contexts in Python.
The PEP is in-flight to python.org, and in the meanwhile can
be read on GitHub:
https://github.com/python/peps/blob/master/pep-0550.rst
(it contains a few diagrams and charts, so please read it there.)
Thank you!
Yury
PEP: 550
Hi,
Is a new EC type really needed? Cannot this be done with
collections.ChainMap?
2017-08-12 0:37 GMT+02:00 Yury Selivanov :
> Hi,
>
> This is a new PEP to implement Execution Contexts in Python.
>
> The PEP is in-flight to python.org, and in the meanwhile can
> be read on GitHub:
>
> https://g
> "Carl" == Carl Smith writes:
Carl> Python is not a good fit for the browser, in part, because of the
syntax.
Carl> JavaScript has issues, but its syntax is better suited to creating
GUIs in
Carl> the browser.
Just so?
Carl> For example, in browsers everything revolves ar
[duplicating my reply cc-ing python-ideas]
> Is a new EC type really needed? Cannot this be done with collections.ChainMap?
No, not really. ChainMap will have O(N) lookup performance where N
is the number of contexts you have in the chain. This will degrade
performance of lookups, which isn't acc
Using lambdas doesn't solve the problem. I just kept the example short, but
had I used more than one expression in each function, you'd be back to
square one. You took advantage of the brevity of the example, but it's not
realistic.
There are lots of language specific features that library authors
On Sat, Aug 12, 2017 at 10:15 AM, Carl Smith wrote:
> Using lambdas doesn't solve the problem. I just kept the example short, but
> had I used more than one expression in each function, you'd be back to
> square one. You took advantage of the brevity of the example, but it's not
> realistic.
>
> T
> "Carl" == Carl Smith writes:
Carl> Using lambdas doesn't solve the problem. I just kept the example
short, but
Carl> had I used more than one expression in each function, you'd be back to
Carl> square one. You took advantage of the brevity of the example, but
it's not
Carl
Hi Jason, and welcome!
On Fri, Aug 11, 2017 at 04:57:46PM +0200, Jason H wrote:
> Before I done my firesuit, I'd like to say that I much prefer python
> and I rail on JS whenever I can. However these days it is quite common
> to be doing work in both Python and Javascript. Harmonizing the two
This is exciting and I'm happy that you're addressing this problem.
We've solved a similar problem in our asynchronous programming framework,
asynq. Our solution (implemented at
https://github.com/quora/asynq/blob/master/asynq/contexts.py) is similar to
that in PEP 521: we enhance the context mana
> This is exciting and I'm happy that you're addressing this problem.
Thank you!
> Some of our use cases can't be implemented using this PEP; notably, we use a
> timing context that times how long an asynchronous function takes by
> repeatedly pausing and resuming the timer.
Measuring performa
On Aug 11, 2017 16:38, "Yury Selivanov" wrote:
Hi,
This is a new PEP to implement Execution Contexts in Python.
Nice! I've had something like this on the back burner for a while as it
helps solve some problems with encapsulating the import state (e.g. PEP
408).
-eric
I may have missed this (I've just skimmed the doc), but what's the
rationale for making the EC an *immutable* mapping? It's impressive that
you managed to create a faster immutable dict, but why does the use case
need one?
--
--Guido van Rossum (python.org/~guido)
On Fri, Aug 11, 2017 at 10:17 PM, Guido van Rossum wrote:
> I may have missed this (I've just skimmed the doc), but what's the rationale
> for making the EC an *immutable* mapping? It's impressive that you managed
> to create a faster immutable dict, but why does the use case need one?
In this pr
[replying to the list]
> I may have missed this (I've just skimmed the doc), but what's the rationale
> for making the EC an *immutable* mapping?
It's possible to implement Execution Context with a mutable mapping
and copy-on-write (as it's done in .NET) This is one of the approaches
that I trie
> On Fri, Aug 11, 2017 at 10:17 PM, Guido van Rossum wrote:
> > I may have missed this (I've just skimmed the doc), but what's the rationale
> > for making the EC an *immutable* mapping? It's impressive that you managed
> > to create a faster immutable dict, but why does the use case need one?
>
Thanks Eric!
PEP 408 -- Standard library __preview__ package?
Yury
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