Re: Python 3: dict & dict.keys()

On 25/07/2013 4:31 AM, Ethan Furman wrote: 2) Hopefully learn something about when a view is useful. I haven't seeen this mentioned - forgive me if it's a repeat - but views are constant references to whichever set they represent. Python 2.7: >>> dd = dict(a=1,b=2,c=3) >>> keys = dd.keys

Re: Python 3: dict & dict.keys()

On Thu, Jul 25, 2013 at 3:48 PM, Steven D'Aprano wrote: > Dicts aren't sets, and don't support set methods: > > py> d1 - d2 > Traceback (most recent call last): > File "", line 1, in > TypeError: unsupported operand type(s) for -: 'dict' and 'dict' I wouldn't take this as particularly signific

Re: Python 3: dict & dict.keys()

On Wed, 24 Jul 2013 17:59:43 -0700, Ethan Furman wrote: >> Repeat after me: "In Python 2, d.keys() returns a list of keys, so if I >> want a list of keys in Python 3, call list explicitly list(d.keys())." > > Actually, I would recommend `list(d)`, which also works the same in both > 2 and 3. Fai

Re: RE Module Performance

On Thu, Jul 25, 2013 at 3:49 PM, Serhiy Storchaka wrote: > 24.07.13 21:15, Chris Angelico написав(ла): > >> To my mind, exposing UTF-16 >> surrogates to the application is a bug to be fixed, not a feature to >> be maintained. > > > Python 3 uses code points from U+DC80 to U+DCFF (which are in surr

Re: RE Module Performance

On Wed, 24 Jul 2013 09:00:39 -0600, Michael Torrie wrote about JMF: > His most recent argument that Python should use UTF as a representation > is very strange to be honest. He's not arguing for anything, he is just hating on anything that gives even the tiniest benefit to ASCII users. This isn'

Re: Python 3: dict & dict.keys()

On Wed, 24 Jul 2013 13:17:12 -0400, Terry Reedy wrote: > On 7/24/2013 12:34 PM, Chris Angelico wrote: > >> Side point: Why is iterating over a dict equivalent to .keys() rather >> than .items()? It feels odd that, with both options viable, the >> implicit version iterates over half the dict inste

Re: Python 3: dict & dict.keys()

On Wed, 24 Jul 2013 08:57:11 -0700, Ethan Furman wrote: > My point is that in 2.x .keys() did something different from the dict, > while in 3.x it appears to me that they are the same. Then you aren't looking very closely. d.keys() returns a set-like view into the dict, which is great for compar

Re: RE Module Performance

24.07.13 21:15, Chris Angelico написав(ла): To my mind, exposing UTF-16 surrogates to the application is a bug to be fixed, not a feature to be maintained. Python 3 uses code points from U+DC80 to U+DCFF (which are in surrogates area) to represent undecodable bytes with surrogateescape error h

Python3, GUIs, game APIs, PyGLet, 2to3...?

I am teaching Python 3 to a few beginning computer programming students. Being high-school age boys, they are, unsurprisingly, interested in games. I want to introduce them to real-time programming and GUI in the most painless way possible. I know that Python comes bundled with Tkinter. Asid

[ANN] PyWeek 17 will run in the first week of September (1st to 8th) - write a game in Python in a week

Hi all, The Python Game Programming Challenge will run its 17th challenge during the first week of September, from the 1st to the 8th. The PyWeek challenge: 1. Invites entrants to write a game in one week from scratch either as an individual or in a team, 2. Is intended to b

Re: I have a little problem with Django when I am trying to create a new app

On Thu, Jul 25, 2013 at 12:03 PM, wrote: > Hello everyone I'm watching a tutorial on how to create a project on Django... > > django-admin.py startproject carabali > > when I run this code on terminal.. happens : > > > http://nsae01.casimages.net/img/2013/07/25/130725021220676239.png > > > There

Re: Python 3: dict & dict.keys()

Ethan Furman writes: > On 07/23/2013 07:11 PM, Steven D'Aprano wrote: > > On Tue, 23 Jul 2013 18:16:08 -0700, Ethan Furman wrote: > >> And everything I thought I knew about when to use one or the other went > >> out the window. > > > > Surely not. The fundamental behaviour of Python's data model

High Availability with neo4j-embedded in Python -- Is that possible?

I'm almost switching from Python to Groovy because I can't find a way to use the neo4j-embedded's Highly Available mode. But no, I certainly don't want Java... I'm using JPype. Is there a way to do it? Kind regards, Jota Junior -- http://mail.python.org/mailman/listinfo/python-list

I have a little problem with Django when I am trying to create a new app

Hello everyone I'm watching a tutorial on how to create a project on Django... django-admin.py startproject carabali when I run this code on terminal.. happens : http://nsae01.casimages.net/img/2013/07/25/130725021220676239.png There's a mistake or something but I can't figure out, help me p

Re: how: embed + extend to control my running app?

On 07/24/2013 08:51 PM, David M. Cotter wrote: update: okay so the python27.dll is in /windows/system32 so ignore that i've set my include directory correct, so i can compile i've set my "additional libraries" directory to the "libs" directory (where the ".lib" files are. (note: NOT including

Re: Python 3: dict & dict.keys()

On 07/23/2013 07:11 PM, Steven D'Aprano wrote: On Tue, 23 Jul 2013 18:16:08 -0700, Ethan Furman wrote: So now, in Python 3, .keys(), .values(), even .items() all return these 'view' thingies. And everything I thought I knew about when to use one or the other went out the window. Surely not.

Re: how: embed + extend to control my running app?

update: okay so the python27.dll is in /windows/system32 so ignore that i've set my include directory correct, so i can compile i've set my "additional libraries" directory to the "libs" directory (where the ".lib" files are. (note: NOT including "Lib" directory, cuz that's full of .py files a

Re: Beginner. 2d rotation gives unexpected results.

On 7/24/2013 5:17 PM, Joshua Landau wrote: import math as m GAH! Why on earth would you do such a thing? for the same reason people do 'import tkinter as tk': to minimize typing and maximize clarity. In this case, from math import sin, cos, radians also works well -- Terry Jan Reed

Re: Python 3: dict & dict.keys()

On 07/24/2013 01:34 PM, Prasad, Ramit wrote: I am still not clear on the advantage of views vs. iterators. What makes d.viewkeys() better than d.iterkeys()? Why did they decide not to rename d.iterkeys() to d.keys() and instead use d.viewkeys()? Is the iteration over a set operation on keys real

Re: Python 3: dict & dict.keys()

On 7/24/2013 4:34 PM, Prasad, Ramit wrote: I am still not clear on the advantage of views vs. iterators. A1: Views are iterables that can be iterated more than once. Therefore, they can be passed to a function that re-iterates its inputs, or to multiple functions. They support 'x in view' as

Re: RE Module Performance

On Thu, Jul 25, 2013 at 8:59 AM, Michael Torrie wrote: > I don't fully understand > why making strings simply "unicode" in javascript breaks compatibility > with older scripts. What operations are performed on strings that > making unicode an abstract type would break? Imagine this in JavaScrip

Re: RE Module Performance

On 07/24/2013 04:19 PM, Chris Angelico wrote: > I'm referring here to objections like jmf's, and also to threads like this: > > http://mozilla.6506.n7.nabble.com/Flexible-String-Representation-full-Unicode-for-ES6-td267585.html > > According to the ECMAScript people, UTF-16 and exposing surrogate

Re: RE Module Performance

On Thu, Jul 25, 2013 at 8:09 AM, Terry Reedy wrote: > On 7/24/2013 2:15 PM, Chris Angelico wrote: >> To my mind, exposing UTF-16 surrogates to the application is a bug >> to be fixed, not a feature to be maintained. > > It is definitely not a feature, but a proper UTF-16 implementation would not >

Re: RE Module Performance

On 7/24/2013 2:15 PM, Chris Angelico wrote: On Thu, Jul 25, 2013 at 3:52 AM, Terry Reedy wrote: For my purpose, the mock Text works the same in 2.7 and 3.3+. Thanks for that report! And yes, it's going to behave exactly the same way, because its underlying structure is an ordered list of or

Re: Python testing tools

On Friday, July 19, 2013 3:56:24 PM UTC-7, cutems93 wrote: > I am currently doing some research on testing software for Python. I found > that there are many different types of testing tools. These are what I've > found. > > > > 1.Unit test > > 2.Mock test > > 3.Fuzz test > > 4.Web test

Re: Beginner. 2d rotation gives unexpected results.

On 23 July 2013 13:34, wrote: > Hello! > This is my first post, nice to meet you all! > I`m biology student from Russia, trying to learn python to perform some > > simple simulations. > > Here`s my first problem. > I`m trying to perform some simple 2d vector rotations in pygame, in order > > to l

Re: Python 3: dict & dict.keys()

Am 24.07.2013 18:34, schrieb Chris Angelico: > Side point: Why is iterating over a dict equivalent to .keys() rather > than .items()? It feels odd that, with both options viable, the > implicit version iterates over half the dict instead of all of it. > Obviously it can't be changed now, even if .i

RE: Python 3: dict & dict.keys()

Stefan Behnel wrote: > Ethan Furman, 24.07.2013 20:31: > > On 07/24/2013 10:23 AM, Stefan Behnel wrote: > >> Peter Otten, 24.07.2013 08:23: > >>> Ethan Furman wrote: > > So, my question boils down to: in Python 3 how is dict.keys() different > from dict? What are the use cases? > >

Re: Python 3: dict & dict.keys()

On 07/24/2013 12:59 PM, Stefan Behnel wrote: I think the question is: how else would you implement an interface that doesn't restrict itself to returning a list? I mean, previously, the following was totally inefficient in terms of memory: value in d.values() It now avoids creating an int

Re: how: embed + extend to control my running app?

> > Now for Windows: same thing, i think i must create a .dll, right? > you should already have a python.dll in your installation i can find "python27.lib" in the "libs" folder, but there is no "python27_d.lib", and there is no "python27.dll" in the DLLs folder? are there instructions for creati

Re: Python 3: dict & dict.keys()

Ethan Furman, 24.07.2013 20:31: > On 07/24/2013 10:23 AM, Stefan Behnel wrote: >> Peter Otten, 24.07.2013 08:23: >>> Ethan Furman wrote: So, my question boils down to: in Python 3 how is dict.keys() different from dict? What are the use cases? >>> >>> To me it looks like views are

Re: how: embed + extend to control my running app?

> http://karaoke.kjams.com/wiki/Python nevermind, i got it, it's working now (see link for code) -- http://mail.python.org/mailman/listinfo/python-list

Re: Python 3: dict & dict.keys()

On 07/24/2013 10:23 AM, Stefan Behnel wrote: Peter Otten, 24.07.2013 08:23: Ethan Furman wrote: So, my question boils down to: in Python 3 how is dict.keys() different from dict? What are the use cases? To me it looks like views are a solution waiting for a problem. They reduce the API o

Re: Dihedral

On Thu, Jul 25, 2013 at 4:08 AM, Stefan Behnel wrote: > Fábio Santos, 16.07.2013 00:54: >> Does this mean he passes the Turing test? > > I'd say that "it" appears more correct. Or is there any indication of a > specific bot gender? (I sure might have missed it...) > > Note that being of a specific

Re: RE Module Performance

On Thu, Jul 25, 2013 at 3:52 AM, Terry Reedy wrote: > On 7/24/2013 11:00 AM, Michael Torrie wrote: >> >> On 07/24/2013 08:34 AM, Chris Angelico wrote: >>> >>> Frankly, Python's strings are a *terrible* internal representation >>> for an editor widget - not because of PEP 393, but simply because >>

Re: Converting a list of lists to a single list

Wow, thanks everyone. Very helpful indeed! On Tuesday, July 23, 2013 2:52:21 PM UTC-7, st...@divillo.com wrote: > I think that itertools may be able to do what I want but I have not been able > to figure out how. > > > > I want to convert an arbitrary number of lists with an arbitrary number o

Re: Dihedral

Fábio Santos, 16.07.2013 00:54: >> On 07/15/2013 08:36 AM, Steven D'Aprano wrote: >>> >>> Devyn, >>> >>> 8 Dihedral is our resident bot, not a human being. Nobody knows who >>> controls it, and why they are running it, but we are pretty certain that >>> it is a bot responding mechanically to ke

Re: Python 3: dict & dict.keys()

On Thu, Jul 25, 2013 at 3:17 AM, Terry Reedy wrote: > On 7/24/2013 12:34 PM, Chris Angelico wrote: > >> Side point: Why is iterating over a dict equivalent to .keys() rather >> than .items()? It feels odd that, with both options viable, the >> implicit version iterates over half the dict instead o

Re: RE Module Performance

On 7/24/2013 11:00 AM, Michael Torrie wrote: On 07/24/2013 08:34 AM, Chris Angelico wrote: Frankly, Python's strings are a *terrible* internal representation for an editor widget - not because of PEP 393, but simply because they are immutable, and every keypress would result in a rebuilding of t

Re: how: embed + extend to control my running app?

i don't use stdout in my own code, my code goes to my own log file. i want the output from any python code to go to my existing log file, so log statements from my app and any python code are intermingled in that one file. my updated code is here, which now bridges my python print function to m

Re: Python 3: dict & dict.keys()

Peter Otten, 24.07.2013 08:23: > Ethan Furman wrote: >> So, my question boils down to: in Python 3 how is dict.keys() different >> from dict? What are the use cases? > > I just grepped through /usr/lib/python3, and could not identify a single > line where some_object.keys() wasn't either wrappe

Re: Python 3: dict & dict.keys()

Chris Angelico, 24.07.2013 18:34: > On Thu, Jul 25, 2013 at 1:57 AM, Ethan Furman wrote: >> On 07/24/2013 05:51 AM, Oscar Benjamin wrote: >>> What do you mean? Why would you want to create a temporary list just to >>> iterate over it explicitly or implicitly (set, >>> sorted, max,...)? >> >> You wo

Re: Python 3: dict & dict.keys()

On 7/24/2013 12:34 PM, Chris Angelico wrote: Side point: Why is iterating over a dict equivalent to .keys() rather than .items()? It feels odd that, with both options viable, the implicit version iterates over half the dict instead of all of it. Obviously it can't be changed now, even if .items(

Re: Python 3: dict & dict.keys()

On Thu, Jul 25, 2013 at 1:57 AM, Ethan Furman wrote: > On 07/24/2013 05:51 AM, Oscar Benjamin wrote: >> What do you mean? Why would you want to create a temporary list just to >> iterate over it explicitly or implicitly (set, >> sorted, max,...)? > > You wouldn't. But you don't need .keys() for t

Re: Python 3: dict & dict.keys()

On Jul 24, 2013 2:27 PM, "Peter Otten" <__pete...@web.de> wrote: > > Oscar Benjamin wrote: > > > On Jul 24, 2013 7:25 AM, "Peter Otten" <__pete...@web.de> wrote: > >> > >> Ethan Furman wrote: > >> > >> > So, my question boils down to: in Python 3 how is dict.keys() > >> > different > >> > from dic

Re: how: embed + extend to control my running app?

On Thu, Jul 25, 2013 at 2:10 AM, David M. Cotter wrote: > So: i really want it to go to my own log file (via my Log() function). now, > can i specify "please output to this FILE*" ?, i looked at all the python c > headers but found nothing about redirecting the output. Are you able to simply

Re: Python 3: dict & dict.keys()

On 07/24/2013 05:51 AM, Oscar Benjamin wrote: On Jul 24, 2013 7:25 AM, "Peter Otten" <__pete...@web.de > wrote: Ethan Furman wrote: > So, my question boils down to: in Python 3 how is dict.keys() different > from dict? What are the use cases? I just grepped through

Re: how: embed + extend to control my running app?

well, umm, gosh, now i feel quite silly. that was easy. okay that's done. next: i'd like to redirect the output of any "print" statements to my C function: > voidLog(const unsigned char *utf8_cstrP); on the mac, python output sys.stdout goes into the debug console if you're in the

Re: Strange behaviour with os.linesep

On 7/23/2013 7:41 PM, Dennis Lee Bieber wrote: On 23 Jul 2013 15:25:12 GMT, Steven D'Aprano declaimed the following: On Tue, 23 Jul 2013 13:42:13 +0200, Vincent Vande Vyvre wrote: On Windows a script where de endline are the system line sep, the files are open with a double line in Eric4, No

Re: Converting a list of lists to a single list

On 7/23/2013 7:02 PM, Terry Reedy wrote: On 7/23/2013 5:52 PM, st...@divillo.com wrote: I think that itertools may be able to do what I want but I have not been able to figure out how. What you want is a flattened product with unchanged components of the successive products omitted in the fla

[ANN] pyspread 0.2.4

== pyspread 0.2.4 == Pyspread 0.2.4 is released. Besides Linux, the new version also runs on Windows (Windows 7 64bit and Windows XP 32bit tested). About pyspread == Pyspread is a non-traditional spreadsheet application that is based on and written in the p

Re: Python 3: dict & dict.keys()

On Wed, Jul 24, 2013 at 8:58 AM, Skip Montanaro wrote: >> What do you mean? Why would you want to create a temporary list just to >> iterate over it explicitly or implicitly (set, sorted, max,...)? > > Because while iterating over the keys, he might also want to add or > delete keys to/from the di

Re: RE Module Performance

On Thu, Jul 25, 2013 at 12:47 AM, Michael Torrie wrote: > On 07/24/2013 07:40 AM, wxjmfa...@gmail.com wrote: >> Sorry, you are not understanding Unicode. What is a Unicode >> Transformation Format (UTF), what is the goal of a UTF and >> why it is important for an implementation to work with a UTF.

Re: Python 3: dict & dict.keys()

On Tue, Jul 23, 2013 at 8:11 PM, Steven D'Aprano wrote: > Basically, views are set-like, not list-like. The keys and items views are set-like. The values view is not. -- http://mail.python.org/mailman/listinfo/python-list

Re: RE Module Performance

On 07/24/2013 08:34 AM, Chris Angelico wrote: > Frankly, Python's strings are a *terrible* internal representation > for an editor widget - not because of PEP 393, but simply because > they are immutable, and every keypress would result in a rebuilding > of the string. On the flip side, I could qui

Re: Python 3: dict & dict.keys()

> What do you mean? Why would you want to create a temporary list just to > iterate over it explicitly or implicitly (set, sorted, max,...)? Because while iterating over the keys, he might also want to add or delete keys to/from the dict. You can't do that while iterating over them in-place. Thi

Re: RE Module Performance

On 07/24/2013 07:40 AM, wxjmfa...@gmail.com wrote: > Sorry, you are not understanding Unicode. What is a Unicode > Transformation Format (UTF), what is the goal of a UTF and > why it is important for an implementation to work with a UTF. Really? Enlighten me. Personally, I would never use UTF as

Re: Simple Python script as SMTP server for outgoing e-mails?

On 7/23/13 5:53 PM, Gilles wrote: On Mon, 22 Jul 2013 10:14:15 -0400, Kevin Walzer wrote: http://www.hmailserver.com Thanks. hMailServer was one of the apps I checked, and I was just making sure there weren't something simpler, considering my needs, ideally something like Mongoose MTA. Regar

Re: RE Module Performance

On Thu, Jul 25, 2013 at 12:17 AM, David Hutto wrote: > I've screwed up plenty of times in python, but can write code like a pro > when I'm feeling better(on SSI and medicaid). An editor can be built simply, > but it's preference that makes the difference. Some might have used tkinter, > gtk. wxpyt

Re: RE Module Performance

I've screwed up plenty of times in python, but can write code like a pro when I'm feeling better(on SSI and medicaid). An editor can be built simply, but it's preference that makes the difference. Some might have used tkinter, gtk. wxpython or other methods for the task. I think the main issue in

Re: RE Module Performance

I've screwed up plenty of times in python, but can write code like a pro when I'm feeling better(on SSI and medicaid). An editor can be built simply, but it's preference that makes the difference. Some might have used tkinter, gtk. wxpython or other methods for the task. I think the main issue in

Re: RE Module Performance

On Wed, Jul 24, 2013 at 11:40 PM, wrote: > Short example. Writing an editor with something like the > FSR is simply impossible (properly). jmf, have you ever written an editor with *any* string representation? Are you speaking from any level of experience at all? ChrisA -- http://mail.python.o

Re: RE Module Performance

Le samedi 13 juillet 2013 01:13:47 UTC+2, Michael Torrie a écrit : > On 07/12/2013 09:59 AM, Joshua Landau wrote: > > > If you're interested, the basic of it is that strings now use a > > > variable number of bytes to encode their values depending on whether > > > values outside of the ASCII ran

Re: hex dump w/ or w/out utf-8 chars

I do not find the thread, where a Python core dev spoke about French, so I'm putting here. This stupid Flexible String Representation splits Unicode in chunks and one of these chunks is latin-1 (iso-8859-1). If we consider that latin-1 is unusable for 17 (seventeen) European languages based on th

Re: Python 3: dict & dict.keys()

Oscar Benjamin wrote: > On Jul 24, 2013 7:25 AM, "Peter Otten" <__pete...@web.de> wrote: >> >> Ethan Furman wrote: >> >> > So, my question boils down to: in Python 3 how is dict.keys() >> > different >> > from dict? What are the use cases? >> >> I just grepped through /usr/lib/python3, and could

Re: Python 3: dict & dict.keys()

On 2013-07-24, Peter Otten <__pete...@web.de> wrote: >> So, my question boils down to: in Python 3 how is dict.keys() >> different from dict? What are the use cases? > > I just grepped through /usr/lib/python3, and could not identify > a single line where some_object.keys() wasn't either wrapped

Re: Python 3: dict & dict.keys()

On Jul 24, 2013 7:25 AM, "Peter Otten" <__pete...@web.de> wrote: > > Ethan Furman wrote: > > > So, my question boils down to: in Python 3 how is dict.keys() different > > from dict? What are the use cases? > > I just grepped through /usr/lib/python3, and could not identify a single > line where s

Re: how: embed + extend to control my running app?

David M. Cotter wrote: For Mac, I understand i need to "create" (?) a python.dylib, If your Python was installed as a framework, you should already have one. Just link your application with "-framework Python". Now for Windows: same thing, i think i must create a .dll, right? Again, you sho

Re: Contact information for Jim Hugunin?

On Mon, Jul 22, 2013, at 05:33 PM, Larry Hastings wrote: > > > Does anybody have an email address (or anything, really) for Jim > Hugunin? He left Google in May and appears to have dropped off the face > of the internet. Please email me privately. > > I swear I will use the information only

Contact information for Jim Hugunin?

Does anybody have an email address (or anything, really) for Jim Hugunin? He left Google in May and appears to have dropped off the face of the internet. Please email me privately. I swear I will use the information only for good and never for evil, //arry/ -- http://mail.python.org/mai

Re: i want to run user specific cronjobs so where to specify user in ubuntu?

On Wed, Jul 24, 2013 at 5:47 PM, wrote: > > -- > http://mail.python.org/mailman/listinfo/python-list Not a Python question. I'm sure Google can help you with this one - just take three words from your question, 'user specific cronjobs', and you'll get plenty of advice. ChrisA -- http://mail.py

i want to run user specific cronjobs so where to specify user in ubuntu?

-- http://mail.python.org/mailman/listinfo/python-list

Re: Strange behaviour with os.linesep

On Wed, Jul 24, 2013 at 5:02 PM, Vincent Vande Vyvre wrote: > In fact, in my code, the original file is open in binary mode, the line > separator is translate to \n and it is parsed by the module tokenise. > > I'm not a Windows user but my code must be run also on Win, this is the > reason of the

Re: Strange behaviour with os.linesep

Le 23/07/2013 17:25, Steven D'Aprano a écrit : On Tue, 23 Jul 2013 13:42:13 +0200, Vincent Vande Vyvre wrote: On Windows a script where de endline are the system line sep, the files are open with a double line in Eric4, Notepad++ or Gedit but they are correctly displayed in the MS Bloc-Notes.