On Sun, Aug 3, 2014 at 11:41 PM, Marko Rauhamaa wrote:
> Steven D'Aprano :
> And I'm talking about a third kind: object-based. It is in active
> (albeit limited) use in scheme: http://irreal.org/blog/?p=40>. I'm
> currently using the principle in a project of mine.
>
> In Java, you use anonymous c
in 726123 20140803 090919 Steven D'Aprano
wrote:
>Steve Hayes wrote:
>
>> I've got too big an investment in books on Python 2, and there are no
>> books available on Python 3 (I don't regard downloadable PDFs or other
>> onlines stuff as "books")
Marko Rauhamaa wrote:
Do this:
class MyClass:
def my_method(self):
def callback(x):
return self.do(x)
return callback
def do(self, x):
print("done: {}".format(x))
Or more simply:
def my_method(self):
retur
"水静流深" <1248283...@qq.com>:
> I want to call back a function which is the method of a class .
>
> def callback(self.do,x):
> return(self.do(x))
>
> That is what i want to write,when i input
>
> def callback(self.do,x):
>
> error message:
Do this:
class MyClass:
Steven D'Aprano :
> Marko Rauhamaa wrote:
>
>> I've reached a point where I think classes are a superfluous OO concept.
>> You only need objects.
>
> I don't know whether "superfluous" is correct, but they certainly are
> *optional*. There are at least two types of object oriented programming:
> c
On 8/3/2014 9:19 PM, Steven D'Aprano wrote:
stuff based on an understandable misunderstanding of what I wrote.
Terry Reedy wrote:
The object class is used to implement duck typing. It is the delegation
of operations to class instance methods that makes extensible duck
typing possible.
I le
On 2014.08.03 23:14, Glenn Linderman wrote:
> Having read a bit about ConEmu, it seems that it is a "pretty face" built on
> top of Windows Console, by screen scraping the real (but hidden) Windows
> Console, and providing a number of interesting display features and modes. So
> while it adds funct
On 8/3/2014 5:17 PM, Glenn Linderman wrote:
On 8/3/2014 4:25 PM, Andrew Berg wrote:
On 2014.08.03 18:08, Chris Angelico wrote:
The best way to do it is to use the Unicode codepage, but cmd.exe just
plain has issues. There are underlying Windows APIs for displaying
text that have problems with a
On Mon, Aug 4, 2014 at 1:03 PM, Steven D'Aprano
wrote:
I think it's not a bug, but a restriction; since it's letting you run
code on their server, and since Python sandboxing is a hard problem,
CodeSkulptor cuts down the available modules. From the docs:
http://www.codeskulpto
On Mon, Aug 4, 2014 at 12:38 PM, Seymore4Head
wrote:
> BTW Just read the instructions seems like a daunting task at the
> moment. You knew what instructions you were looking for. I am
> clueless.
Yeah, that's called experience :) Part of that experience is the
rather painful one of spending a
Seymore4Head wrote:
> On Sun, 03 Aug 2014 22:08:21 -0400, Seymore4Head
> wrote:
>
>>On Mon, 4 Aug 2014 11:43:48 +1000, Chris Angelico
>>wrote:
>>
>>>On Mon, Aug 4, 2014 at 11:29 AM, Steven D'Aprano
>>> wrote:
> Putting that in codeskulptor gets
>
> Line 4: ImportError: No module nam
I want to call back a function which is the method of a class .
def callback(self.do,x):
return(self.do(x))
That is what i want to write,when i input
def callback(self.do,x):
error message:
File "", line 1
def callback(self.do,x):
^
On Sun, 03 Aug 2014 22:08:21 -0400, Seymore4Head
wrote:
>On Mon, 4 Aug 2014 11:43:48 +1000, Chris Angelico
>wrote:
>
>>On Mon, Aug 4, 2014 at 11:29 AM, Steven D'Aprano
>> wrote:
Putting that in codeskulptor gets
Line 4: ImportError: No module named datetime
>>>
>>> Well that's a b
On Mon, Aug 4, 2014 at 12:33 PM, elearn wrote:
> I want to call back a function which is the method of a class .
>
> def callback(self.do,x):
> return(self.do(x))
>
> That is what i want to write,when i input
>
> def callback(self.do,x):
>
> error message:
>
>
> File "", line
I want to call back a function which is the method of a class .
def callback(self.do,x):
return(self.do(x))
That is what i want to write,when i input
def callback(self.do,x):
error message:
File "", line 1
def callback(self.do,x):
^
Synt
Igor Korot Wrote in message:
> Hi, ALL,
> I'm working on the script that should starting from the given
> directory enumerate all directories and files underneath and
> calculates the hash value of such file.
> It works fine when I start it from some particular directory, but when
> I give the "C:
On Mon, 4 Aug 2014 11:43:48 +1000, Chris Angelico
wrote:
>On Mon, Aug 4, 2014 at 11:29 AM, Steven D'Aprano
> wrote:
>>> Putting that in codeskulptor gets
>>>
>>> Line 4: ImportError: No module named datetime
>>
>> Well that's a bug in CodeSkultor. datetime is a standard Python library, if
>> Code
On Mon, 04 Aug 2014 02:56:34 +0100, Mark Lawrence
wrote:
>On 04/08/2014 02:41, Seymore4Head wrote:
>> On Mon, 04 Aug 2014 11:29:06 +1000, Steven D'Aprano
>> wrote:
>>
>>> Seymore4Head wrote:
>>>
>>> [...]
The second thing I am doing is using codeskulptor to try out a few
things I have
On 04/08/2014 02:41, Seymore4Head wrote:
On Mon, 04 Aug 2014 11:29:06 +1000, Steven D'Aprano
wrote:
Seymore4Head wrote:
[...]
The second thing I am doing is using codeskulptor to try out a few
things I have learned at codecademy.
What's CodeSkulptor?
Putting that in codeskulptor gets
Li
On Mon, 04 Aug 2014 11:29:06 +1000, Steven D'Aprano
wrote:
>Seymore4Head wrote:
>
>[...]
>> The second thing I am doing is using codeskulptor to try out a few
>> things I have learned at codecademy.
>
>What's CodeSkulptor?
>
>> Putting that in codeskulptor gets
>>
>> Line 4: ImportError: No modu
You also posted this question to the tu...@python.org mailing list, which is
where I gave an answer. This is a much better place, so I'll re-post the
most important parts of my answer here. If you read nothing else, scroll
down to the end and read the last part of my comment.
bruce wrote:
> I ha
On Mon, Aug 4, 2014 at 11:29 AM, Steven D'Aprano
wrote:
>> Putting that in codeskulptor gets
>>
>> Line 4: ImportError: No module named datetime
>
> Well that's a bug in CodeSkultor. datetime is a standard Python library, if
> CodeSkulptor doesn't provide it, that's a serious bug.
I think it's no
Seymore4Head wrote:
[...]
> The second thing I am doing is using codeskulptor to try out a few
> things I have learned at codecademy.
What's CodeSkulptor?
> Putting that in codeskulptor gets
>
> Line 4: ImportError: No module named datetime
Well that's a bug in CodeSkultor. datetime is a stand
RIck,
On 7/17/14, 2:15 PM, Rick Johnson wrote:
Sadly, all of my calls to improve IDLE have been meet with
rebukes about me "whining". The "powers that be" would wise
to*UTILIZE* and*ENCOURAGE* my participation instead of
*IGNORING* valuable talent and*IMPEDING* the expansion of
this "private
On 04/08/2014 02:06, Seymore4Head wrote:
I am very new to Python.
Right now I am using two tools.
I am trying the tutorials at codecademy.com which is walking me
through it pretty slow.
The second thing I am doing is using codeskulptor to try out a few
things I have learned at codecademy.
I am g
Terry Reedy wrote:
> The object class is used to implement duck typing. It is the delegation
> of operations to class instance methods that makes extensible duck
> typing possible.
That cannot possibly be true, because Python had duck typing before it had
object. object and new-style classes wer
I am very new to Python.
Right now I am using two tools.
I am trying the tutorials at codecademy.com which is walking me
through it pretty slow.
The second thing I am doing is using codeskulptor to try out a few
things I have learned at codecademy.
I am getting a mismatch.
The example I am workin
Steven D'Aprano wrote:
I don't know enough about prototyped OOP to really give a definitive answer,
but I believe that the popularity of class-based OOP is because there is a
huge body of theory on types,
I think it's more than that. I thought about prototype-based
OO systems in some depth a wh
In article <53ded02e$0$29980$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
> Marko Rauhamaa wrote:
>
> > I've reached a point where I think classes are a superfluous OO concept.
> > You only need objects.
>
> I don't know whether "superfluous" is correct, but they certainly are
>
On Mon, Aug 4, 2014 at 10:20 AM, Igor Korot wrote:
> I'm working on the script that should starting from the given
> directory enumerate all directories and files underneath and
> calculates the hash value of such file.
> It works fine when I start it from some particular directory, but when
> I g
Hi, ALL,
I'm working on the script that should starting from the given
directory enumerate all directories and files underneath and
calculates the hash value of such file.
It works fine when I start it from some particular directory, but when
I give the "C:\" it crashes python.
The last thing the
On 8/3/2014 4:25 PM, Andrew Berg wrote:
On 2014.08.03 18:08, Chris Angelico wrote:
The best way to do it is to use the Unicode codepage, but cmd.exe just
plain has issues. There are underlying Windows APIs for displaying
text that have problems with astral characters (I think that's what it
is),
Marko Rauhamaa wrote:
> I've reached a point where I think classes are a superfluous OO concept.
> You only need objects.
I don't know whether "superfluous" is correct, but they certainly are
*optional*. There are at least two types of object oriented programming:
class-bases, and prototype-based
On Mon, Aug 4, 2014 at 9:39 AM, Chris Angelico wrote:
> I just played around with a CP-437 decode of everything 128-255,
> rendered in various different fonts, all using my MUD client on
> Windows. (For what it's worth, it renders using GTK2 and Pango. But I
> suspect this is more a font issue tha
On Mon, Aug 4, 2014 at 9:25 AM, Andrew Berg
wrote:
> On 2014.08.03 18:08, Chris Angelico wrote:
>> The best way to do it is to use the Unicode codepage, but cmd.exe just
>> plain has issues. There are underlying Windows APIs for displaying
>> text that have problems with astral characters (I think
On 04/08/2014 00:25, Andrew Berg wrote:
On 2014.08.03 18:08, Chris Angelico wrote:
The best way to do it is to use the Unicode codepage, but cmd.exe just
plain has issues. There are underlying Windows APIs for displaying
text that have problems with astral characters (I think that's what it
is),
On 2014.08.03 18:08, Chris Angelico wrote:
> The best way to do it is to use the Unicode codepage, but cmd.exe just
> plain has issues. There are underlying Windows APIs for displaying
> text that have problems with astral characters (I think that's what it
> is), so ultimately, you're largely stuc
On 03/08/2014 23:52, Wiktor wrote:
Hi,
as OO programming exercise, I'm trying to port to Python one of my favorite
game from early'90 (Atari 65XL/XE) - Kolony (here's video from original
version on C64 https://www.youtube.com/watch?v=UFycYOp2cbE, and here's
video from modern rewritten (for Atar
On Mon, Aug 4, 2014 at 8:52 AM, Wiktor wrote:
> I have to ask - is there a way to make that original concept work? I know,
> that CP437 has symbols "╖", "╢" and "╘", but does not have polish letters -
> and I need to display them too.
Yeah, that's exactly the problem with codepages :)
The best w
On 8/3/2014 10:51 AM, Marko Rauhamaa wrote:
Peter Otten <__pete...@web.de>:
i. e. you have a per-class and per-instance memory consumption. The
latter is smaller, so with regards to memory consumption instantiating
only pays off when there is more than one employee.
I've reached a point where
Hi,
as OO programming exercise, I'm trying to port to Python one of my favorite
game from early'90 (Atari 65XL/XE) - Kolony (here's video from original
version on C64 https://www.youtube.com/watch?v=UFycYOp2cbE, and here's
video from modern rewritten (for Atari emulators) version: Kolony 2106
htt
On 03/08/2014 22:34, robkote...@gmail.com wrote:
[snipped to bits]
Please don't top post, further would you read and action this
https://wiki.python.org/moin/GoogleGroupsPython to prevent us seeing
double line spacing and single line paragraphs, thanks.
--
My fellow Pythonistas, ask not what
bruce wrote:
> Hi.
>
> I have a long running process, it generates calls to a separate py
> app. The py app appears to generate errors, as indicated in the
> /var/log/messages file for the abrtd daemon.. The errors are
> intermittent.
>
> So, to quickly capture all possible exceptions/errors, I
On 8/3/14, 1:24 PM, Peter Tomcsanyi wrote:
I think that it is because of this problem in Mavericks:
http://core.tcl.tk/tk/tktview?name=99b84e49ff
The above link says that it has been solved in Tcl/Tk.
But: what does it mean for me - a Python user?
Can anyone say when a version containing the a
With the way you have imported, you trying to use the module pprint instead of
the function pprint.pprint.
You need to use pprint.pprint or you need to import as:
from pprint import pprint
if you want to use the shorter form.
On Tuesday, July 22, 2014 5:42:02 PM UTC-4, fl wrote:
> Hi,
>
>
Hi Alan.
Yep, the err file in the exception block gets created. and the weird
thing is it matches the time of the abrtd information in the
/var/log/messages log..
Just nothing in the file!
On Sun, Aug 3, 2014 at 4:01 PM, Alan Gauld wrote:
> On 03/08/14 18:52, bruce wrote:
>
>>> but in all tha
On Sunday, August 3, 2014 10:39:19 PM UTC+8, Roy Smith wrote:
> In article ,
>
> bruce wrote:
>
>
>
> > I'm posting the test code I'm using. Pointers/comments would be
>
> > helpful/useful.
>
>
>
> It would be really helpful if you could post a minimal code example
>
> which demonstrat
On 03/08/14 18:52, bruce wrote:
but in all that.. no one could tell me .. why i'm not getting any
errs/exceptions in the err file which gets created on the exception!!!
Does the file actually get created?
Do you see the print statement output - are they what you expect?
Did you try the things
Am 03.08.2014 02:04, schrieb Gregory Ewing:
MRAB wrote:
RISC OS didn't have a menu bar at the top of each window either; its
menus were all pop-up. You didn't have to keep flicking the mouse at
all!
The main reason for having a menu bar is discoverability. The
idea is that you can browse throug
On Mon, Aug 4, 2014 at 3:52 AM, bruce wrote:
> chris.. my bad.. I wasnt intending to mail you personally.
>
> Or I wouldn't have inserted the "thanks guys"!
>
>
>> thanks guys...
>>
>> but in all that.. no one could tell me .. why i'm not getting any
>> errs/exceptions in the err file which gets c
chris.. my bad.. I wasnt intending to mail you personally.
Or I wouldn't have inserted the "thanks guys"!
> thanks guys...
>
> but in all that.. no one could tell me .. why i'm not getting any
> errs/exceptions in the err file which gets created on the exception!!!
>
> but thanks for the informat
In article ,
Mark Lawrence wrote:
> On 02/08/2014 20:58, Ben Finney wrote:
> > Steven D'Aprano writes:
> >
> >> If you need instances which carry state, then object is the wrong
> >> class.
> >
> > Right. The âtypesâ module provides a SimpleNamespace class for the
> > common âbag of attri
On 02/08/2014 20:58, Ben Finney wrote:
Steven D'Aprano writes:
If you need instances which carry state, then object is the wrong
class.
Right. The ‘types’ module provides a SimpleNamespace class for the
common “bag of attributes” use case::
>>> import types
>>> foo = types.SimpleN
Hello to all,
My OSX is 10.9 Mavericks.
I use Python 3.4. with ActiveTcl 8.5.15.1.
I was struggling with several approaches to using PNG files with alpha
channel (partial transparency).
Following my question in this newsgroup (see the thread "Python 3.4.1
installer on Mac links Python to old T
On Mon, Aug 4, 2014 at 2:27 AM, Roy Smith wrote:
> It says there, "most readers will stop reading by 100 lines of code". I
> guess I have a short attention span relative to "most readers", because
> my tl;dnr threshold is a lot shorter than that.
"by" 100 lines includes everyone who stops at 10
In article ,
Mark Lawrence wrote:
> How to go about this is at "Short, Self Contained, Correct (Compilable),
> Example" at http://sscce.org/
It says there, "most readers will stop reading by 100 lines of code". I
guess I have a short attention span relative to "most readers", because
my tl;
On 03/08/2014 15:29, bruce wrote:
[snipped to bits]
Please see this http://sscce.org/ as already requested on the main
mailing list.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
--
https://mail.python.org/mailman/lis
Roy Smith :
> Marko Rauhamaa wrote:
>
>> I've reached a point where I think classes are a superfluous OO
>> concept. You only need objects.
>
> comp.lang.javascript is over that way -->
Thanks for the insight. I'm currently more absorbed by comp.lang.scheme,
though.
Now, Python is ducktyped. I
I want to break a PKCS7 signature that contains data + signature into separate:
raw data & detached PKCS7 signature in python.
I can get the data fro the signature because the verification routine returns
it, but how can I get the detached signature ?
def verify_pkcs7(data_bio, signature_bio, c
In article <87wqaplj8h@elektro.pacujo.net>,
Marko Rauhamaa wrote:
> I've reached a point where I think classes are a superfluous OO concept.
> You only need objects.
comp.lang.javascript is over that way -->
--
https://mail.python.org/mailman/listinfo/python-list
On Mon, Aug 4, 2014 at 12:36 AM, Roy Smith wrote:
> In article ,
> Chris Angelico wrote:
>
>> On Sun, Aug 3, 2014 at 11:25 PM, Roy Smith wrote:
>> > in which case, I've said, "make Foos just like objects, except for, oh,
>> > never mind, there aren't any differences". But, in reality, the syst
On 03/08/2014 15:39, Roy Smith wrote:
In article ,
bruce wrote:
I'm posting the test code I'm using. Pointers/comments would be
helpful/useful.
It would be really helpful if you could post a minimal code example
which demonstrates the problem you're having. Leave out everything
(including
Peter Otten <__pete...@web.de>:
> i. e. you have a per-class and per-instance memory consumption. The
> latter is smaller, so with regards to memory consumption instantiating
> only pays off when there is more than one employee.
I've reached a point where I think classes are a superfluous OO conc
In article ,
bruce wrote:
> I'm posting the test code I'm using. Pointers/comments would be
> helpful/useful.
It would be really helpful if you could post a minimal code example
which demonstrates the problem you're having. Leave out everything
(including the commented-out code) which isn't
In article ,
Chris Angelico wrote:
> On Sun, Aug 3, 2014 at 11:25 PM, Roy Smith wrote:
> > in which case, I've said, "make Foos just like objects, except for, oh,
> > never mind, there aren't any differences". But, in reality, the system
> > bolted on the ability to have user-defined attribute
Hi.
I have a long running process, it generates calls to a separate py
app. The py app appears to generate errors, as indicated in the
/var/log/messages file for the abrtd daemon.. The errors are
intermittent.
So, to quickly capture all possible exceptions/errors, I decided to
wrap the entire "ma
Albert-Jan Roskam writes:
> I find the following obscure (to me at least) use of type() useful
> exactly for this "bag of attributes" use case:
employee = type("Employee", (object,), {})
employee.name = "John Doe"
employee.position = "Python programmer"
You could write it as:
Hi all
I am trying to use asyncio in real applications and it doesn't go that
easy, a help of asyncio gurus is needed badly.
Consider a task like crawling the web starting from some web-sites. Each
site leads to generation of new downloading tasks in exponential(!)
progression. However we don't w
On 01/08/2014 16:41, Steven D'Aprano wrote:
On Fri, 01 Aug 2014 14:39:09 +0100, Robert Kern wrote:
Take a look at what has already been implemented in IPython:
https://github.com/ipython/ipython/blob/master/IPython/core/
completerlib.py#L208
Awesome! Thank you!
Is Lib/idlelib/AutoComplete
On Sun, Aug 3, 2014 at 11:25 PM, Roy Smith wrote:
> in which case, I've said, "make Foos just like objects, except for, oh,
> never mind, there aren't any differences". But, in reality, the system
> bolted on the ability to have user-defined attributes without telling
> me. I don't think it's un
In article ,
Chris Angelico wrote:
> On Sun, Aug 3, 2014 at 10:40 PM, Roy Smith wrote:
> > I usually just do:
> >
> > class Data:
> >pass
> > my_obj = Data()
> >
> > That's all you really need. It's annoying that you can't just do:
> >
> > my_obj = object()
> >
> > which would be even sim
On Sun, Aug 3, 2014 at 10:40 PM, Roy Smith wrote:
> I usually just do:
>
> class Data:
>pass
> my_obj = Data()
>
> That's all you really need. It's annoying that you can't just do:
>
> my_obj = object()
>
> which would be even simpler, because (for reasons I don't understand),
> you can't cr
In article ,
Mark Lawrence wrote:
> On 02/08/2014 20:58, Ben Finney wrote:
> > Steven D'Aprano writes:
> >
> >> If you need instances which carry state, then object is the wrong
> >> class.
> >
> > Right. The âtypesâ module provides a SimpleNamespace class for the
> > common âbag of attri
On 02/08/2014 20:58, Ben Finney wrote:
Steven D'Aprano writes:
If you need instances which carry state, then object is the wrong
class.
Right. The ‘types’ module provides a SimpleNamespace class for the
common “bag of attributes” use case::
>>> import types
>>> foo = types.SimpleN
On Sun, Aug 3, 2014 at 9:05 PM, wrote:
> It was suggested to me on another forum that I use pythonw.exe instead of
> python.exe to prevent the window from being displayed, but I don't know how
> to do this, because it is all automatic: I just click on the .py file, and
> the python interpreter
Albert-Jan Roskam wrote:
>
>
> - Original Message -
>
>> From: Peter Otten <__pete...@web.de>
>> To: python-list@python.org
>> Cc:
>> Sent: Sunday, August 3, 2014 11:37 AM
>> Subject: Re: Correct type for a simple "bag of attributes" namespace
>> object
>>
>> Albert-Jan Roskam wrote:
>
- Original Message -
> From: Albert-Jan Roskam
> To: Terry Reedy ; "python-list@python.org"
>
> Cc:
> Sent: Sunday, August 3, 2014 11:17 AM
> Subject: Re: Correct type for a simple "bag of attributes" namespace object
> Right. The 'types' module provides a SimpleNamespace
>
Hi,
whenever I run the Leo editor (a Python application) from Windows (8.1), there
is always an event log window in the background. I want to turn it off.
It was suggested to me on another forum that I use pythonw.exe instead of
python.exe to prevent the window from being displayed, but I don't
- Original Message -
> From: Peter Otten <__pete...@web.de>
> To: python-list@python.org
> Cc:
> Sent: Sunday, August 3, 2014 11:37 AM
> Subject: Re: Correct type for a simple "bag of attributes" namespace object
>
> Albert-Jan Roskam wrote:
>
>> I find the following obscure (to me a
Martin S writes:
> Problem is the [SQLAlchemy] tutorials I've been looking at all produce
> various errors when following them (and pretty early on).
SQLAlchemy has been progressively adding support for Python 3, so it
matters which version of SQLAlchemy you install.
For best results, it seems
Hi,
I've been looking at various tutorials on SQLAlchemy as I am planning
to do fill a void among the Linux applications (unless someone has
seen a diabetic result "analyser" thingy that's common for Android et
al).
But I need to get a database working.
Problem is the Alchemy tutorials I've been
Albert-Jan Roskam wrote:
> I find the following obscure (to me at least) use of type() useful exactly
> for this "bag of attributes" use case:
employee = type("Employee", (object,), {})
employee.name = "John Doe"
employee.position = "Python programmer"
employee.name, employee.p
--- Original Message -
> From: Terry Reedy
> To: python-list@python.org
> Cc:
> Sent: Sunday, August 3, 2014 4:43 AM
> Subject: Re: Correct type for a simple "bag of attributes" namespace object
>
> On 8/2/2014 8:59 PM, Ian Kelly wrote:
>> On Sat, Aug 2, 2014 at 2:46 PM, Mark Summerfield
>
Steve Hayes wrote:
> I've got too big an investment in books on Python 2, and there are no
> books available on Python 3 (I don't regard downloadable PDFs or other
> onlines stuff as "books").
I love Python 3, it's way better than Python 2, and there's less and less
reason to stick to Python 2 no
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