Dietmar,
> I would assume that this is not an application that needs to output a 100%
> correct pulse train every time.
Correct. Thats in the design of the pulses themselves (25% duticycle for
one state, 75% for the other. Lots of leeway, and self synchronising)
> You may just repeat the pa
On Sat, Nov 16, 2019 at 5:41 PM Gregory Ewing
wrote:
>
> On 16/11/19 8:22 am, Chris Angelico wrote:
> > That's the typical sort of description you get from someone who mostly
> > understands Python's semantics, but is hung up on the idea that
> > everything is either call-by-value or call-by-refer
On 16/11/19 8:22 am, Chris Angelico wrote:
That's the typical sort of description you get from someone who mostly
understands Python's semantics, but is hung up on the idea that
everything is either call-by-value or call-by-reference, and is trying
to figure out which box Python fits into.
Or t
On 14.11.2019 21:00, R.Wieser wrote:
There is a small 433 MHz rf transmitter connected to the pin, and when I
send the right pattern a wireless wall-wart will respond and switch a lamp
on or off. Its just ment as an example of a real-world application of
Python, nothing serious.
I would ass
I mostly use Libreoffice Impress, but I've also tried Google Slides.
I don't think Impress does syntax highlighting out of the box, but there's
a plugin that claims to.
Also, Google Slides purportedly supports highlighting just by
cut-and-pasting from a GUI editor/IDE with syntax highlighting.
H
Hi folks.
I'm looking at a test process that takes about 16 minutes for a full run.
Naturally, I'd like to speed it up. We've already parallelized it - mostly.
It seems like the next thing to look at is setting up a local pypi, and
building some of the packages that're compiled from C/C++ every
On 11/15/2019 5:48 AM, R.Wieser wrote:
Closures are standard in functional languages and are less limited than
you seem to think.
I was talking about the "nonlocal" method of variable inheritance, not
closures.
You cannot really separate the two. A 'nonlocal' declaration can only
be used in
Wing 7.1.3 has been released. This version adds improved and expanded
documentation and support for matplotlib, improves the accuracy of code
warnings, fixes automatically debugging child processes on Windows with
Python 3.8, fixes installing the remote agent from .rpm or .deb
installations, s
On Sat, Nov 16, 2019 at 6:20 AM Luciano Ramalho wrote:
>
> Re: the whole pass by reference discussion.
>
> I've seen Python's argument passing described as "call by value,
> except that all values are references". This makes sense, but is
> confusing.
That's the typical sort of description you ge
Re: the whole pass by reference discussion.
I've seen Python's argument passing described as "call by value,
except that all values are references". This makes sense, but is
confusing.
Michael Scott, in his textbook Programming Language Pragmatics (4e)
terms the Python way "call by sharing". That
> On Nov 15, 2019, at 11:11 AM, Python wrote:
>
> Richard Damon wrote:
> ...
>> then elsewhere you could do
>> foo(j)
>> and after that j is 2
>> you also could do
>> foo(1)
>> and after that if you did
>> j = 1
>> then now j might have the value 2 as the constant 1 was changed to the
>> value
On 11/15/19 12:21 PM, Random832 wrote:
> On Fri, Nov 15, 2019, at 11:47, Richard Damon wrote:
>> The issue with calling it a Reference, is that part of the meaning of a
>> Reference is that it refers to a Object, and in Python, Names are
>> conceptually something very much different than an Object.
Woops latex seems me programming the slides. yaps thanks for sharing. See
this pycon vid for example: https://youtu.be/6uAvHOKofws
It's simple and flexible ( you can add images, coloured syntax and cool
text ) and that's all we need. Don't know what he used.
Abdur-Rahmaan Janhangeer
http://www.p
On 2019-11-15, Abdur-Rahmaan Janhangeer wrote:
> For slides i use https://yhatt.github.io/marp/, but sometimes i want a more
> stylish tool.
>
> What do you use for slides? (besides powerpoint + syntax highlighting
> included)
Last time I made slides it was four a 3-day course I was teaching. I
Greetings all,
For slides i use https://yhatt.github.io/marp/, but sometimes i want a more
stylish tool.
What do you use for slides? (besides powerpoint + syntax highlighting
included)
Thanks!
Abdur-Rahmaan Janhangeer
http://www.pythonmembers.club | https://github.com/Abdur-rahmaanJ
Mauritius
-
On Fri, Nov 15, 2019, at 11:47, Richard Damon wrote:
> The issue with calling it a Reference, is that part of the meaning of a
> Reference is that it refers to a Object, and in Python, Names are
> conceptually something very much different than an Object. Yes, in the
> implementation details, a nam
Richard Damon wrote:
...
then elsewhere you could do
foo(j)
and after that j is 2
you also could do
foo(1)
and after that if you did
j = 1
then now j might have the value 2 as the constant 1 was changed to the
value 2 (this can cause great confusion)
Wow! So fubar that such a feature sho
On 11/15/19 11:26 AM, Dennis Lee Bieber wrote:
> On Fri, 15 Nov 2019 12:56:02 +0100, "R.Wieser"
> declaimed the following:
>
>> There are quite a number of languages where /every/ type of argument
>> (including values) can be transfered "by reference". Though some default to
>> "by value", wher
On 11/15/19 11:04 AM, Random832 wrote:
> On Fri, Nov 15, 2019, at 10:48, Richard Damon wrote:
>> On 11/15/19 6:56 AM, R.Wieser wrote:
>>> There are quite a number of languages where /every/ type of argument
>>> (including values) can be transfered "by reference". Though some default
>>> to
>>>
On 11/15/19 5:28 AM, R.Wieser wrote:
> :-) Although that is how we humans remember the effect of what we do, there
> is no reason for a programming language to do it exactly like that. And
> sometimes they don't.
So, in effect he's saying not all languages use the classic variable
model, which
On Fri, Nov 15, 2019, at 10:48, Richard Damon wrote:
> On 11/15/19 6:56 AM, R.Wieser wrote:
> > There are quite a number of languages where /every/ type of argument
> > (including values) can be transfered "by reference". Though some default
> > to
> > "by value", where others default to "by re
On 11/15/19 4:56 AM, R.Wieser wrote:
>> Well I've only seen this done in languages where other mechanisms
>> for returning complex types are not present.
>
> :-) Than you have not seen to many languages I'm afraid.
Careful there.
> If I would have wanted that, why would I post here with open qu
On 11/15/19 6:56 AM, R.Wieser wrote:
> There are quite a number of languages where /every/ type of argument
> (including values) can be transfered "by reference". Though some default to
> "by value", where others default to "by reference".
It seems you are stuck in a programming model different
Pieter,
> Do you mean, if Proc1() is called from Func1, it uses MyVar defined
>in Func1, and if it is called from Func2, it uses MyVar from Func2?
Yep.
> If that is what you mean, that would be dynamic scope.
Thanks for pointing that out (I've learned a new definition today! :-) ).
Regards,
Ru
Dennis,
> The first thing one needs to learn is that Python does NOT follow the
> common post-office mailbox concept where
>
> x = y
>
> means the /value/ stored at location identified by "y" is /copied/ to the
> location identified by "x".
:-) Although that is how we humans remember the effect
On Fri, Nov 15, 2019 at 11:01 PM R.Wieser wrote:
>
> As for "complex types" ? I don't think a(n ASCII) string can be considered
> any kind of a complex type, but most all languages I know of transfer them
> "by reference" only (though some fake "by value" by using a copy-on-write
> mechanism).
On Fri, Nov 15, 2019 at 9:16 PM R.Wieser wrote:
>
> Chris,
>
> > That doesn't really answer the question.
>
> The problem is that you want to solve /this/ problem, while I'm looking for
> replies that are applicable to similar ones too.
>
> To be blunt about it: I consider solutions that only solv
Michael,
> Well I've only seen this done in languages where other mechanisms
>for returning complex types are not present.
:-) Than you have not seen to many languages I'm afraid.
There are quite a number of languages where /every/ type of argument
(including values) can be transfered "by refer
Dennis,
> No, that addition is a fixed increment on the initial starting
> time, and is NOT relative to the ending of a sleep.
> No, that addition is a fixed increment
Yep.
> on the initial starting time
Nope.
If pythons sleep is worth its salt it ends exactly on the time provided in
"t".
Terry,
> This is discouraged for anything very complex.
Complex things do not exist. If you think you have something like it you've
just not yet broken it down in its components yet. :-)
> This is the standard way in Python and other OO languages. By 'excluded',
> do you mean 'rejected', or
Chris,
> That doesn't really answer the question.
The problem is that you want to solve /this/ problem, while I'm looking for
replies that are applicable to similar ones too.
To be blunt about it: I consider solutions that only solve a single problem
most always as a waste of my time (exceptio
Hello MRAB,
yes, like that :-)
Thanks,
Karsten
On Thu, Nov 14, 2019 at 09:11:37PM +, MRAB wrote:
> Date: Thu, 14 Nov 2019 21:11:37 +
> From: MRAB
> To: python-list@python.org
> Subject: Re: py2 vs py3: zlib.adler32/crc32
> User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/
Rob,
> On an actually practical note; ever since they started baking the
> quasi-realtime stuff into the Linux kernel, you've been able to use the
> whole sched_setscheduler(2) family of calls (from C) to set a process's
> real-time priority.
Its something worth to look into. Thanks.
Regards
On 14/11/19 18:46, R.Wieser wrote:
> Jan,
>
>> So what you want to do is dynamic scope?
> No, not really.I was looking for method to let one procedure share a
> variable with its caller - or callers, selectable by me. And as a "by
> reference" argument does not seem to exist in Python ...
Dave,
> OK I'm old enough cancer to know what X10 is. :-)
Ah, so that is the name I forgot. :-)
> I wouldn't think this is too difficult to do as you're only sending.
You're right, codewise it isn't.
> For this application IMO there is too much going on inside python that can
> interrupt the
> On Nov 14, 2019, at 8:42 PM, MRAB wrote:
>
> Objective-C++?
>
> I knew that Objective-C is C with objects.
>
> I knew that C++ is C with objects.
>
> But C with both?
Per Wikipedia...
Objective-C++ is a language variant accepted by the front-end to the GNU
Compiler Collection and Clang,
"R.Wieser" writes:
> Jan,
>
>> So what you want to do is dynamic scope?
>
> No, not really.I was looking for method to let one procedure share a
> variable with its caller - or callers, selectable by me. And as a "by
> reference" argument does not seem to exist in Python ...
>
> And yes,
Hi,
it's possible to have multiple processes running with separate pygame
windows.
However you need to communicate with an inter process mechanism.
For example by running a web server over TCP/ip/sockets, or UDP with OSC,
or shared memory with mmap, or even via clipboard copy/paste, the humble
fi
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