Using Python after a few years of Ruby

2009-04-14 Thread blahemailblah
Although I'm not 100% new to Python, most of my experience using high- level languages is with Ruby. I had a job doing Rails web development a little ways back and I really enjoyed it. At my current workplace though, we're looking at using Python and I'm trying to get back into the Python "groove"

Re: Using Python after a few years of Ruby

2009-04-14 Thread Jason Scheirer
On Apr 14, 12:01 am, blahemailb...@gmail.com wrote: > Although I'm not 100% new to Python, most of my experience using high- > level languages is with Ruby. I had a job doing Rails web development > a little ways back and I really enjoyed it. At my current workplace > though, we're looking at using

read file with multiple data per line

2009-04-14 Thread Eduardo
Hello all, I googled a lot but couldn't find anything that i could consider a possible solution (though i am fairly new to the language and i think this is the main cause of my failure). This is the beginning of the file i have to parse: Modified System 32728 2NHST1 C1 56 3.263

Re: read file with multiple data per line

2009-04-14 Thread Steven D'Aprano
On Tue, 14 Apr 2009 00:15:18 -0700, Eduardo wrote: > Hello all, > > I googled a lot but couldn't find anything that i could consider a > possible solution (though i am fairly new to the language and i think > this is the main cause of my failure). You haven't actually said what the problem is.

ctypes - random access to address space

2009-04-14 Thread janislaw
Hi, I am currently doing a project in which I interface to a PCI card. To ease the prototyping, I call the API functions, which map the address space of the card to a process memory. I acquire the location in the process memory mapped to an address space using card API, resulting in a c structure

Re: ctypes - random access to address space

2009-04-14 Thread Diez B. Roggisch
janislaw schrieb: Hi, I am currently doing a project in which I interface to a PCI card. To ease the prototyping, I call the API functions, which map the address space of the card to a process memory. I acquire the location in the process memory mapped to an address space using card API, result

Re: sending and receiving ipv6 multicasts

2009-04-14 Thread Kai Timmer
On 13 Apr., 19:51, "Martin v. Löwis" wrote: > On the receiving side, you also need to set the IPV6_JOIN_GROUP > socket option - else your kernel doesn't know you are interested in > packets for that address. You need to bind to the multicast port, > and optionally to the multicast address. If I d

Should we separate business logic and ORM mapping classes?

2009-04-14 Thread 一首诗
Hi, ( First, this is not a question about if we should use ORM. It's question for these who are already using it. ) Usually, I only use ORM, like sqlalchemy just as an abstraction layer of database. So these mapping objects I wrote only contains data but not behavior. For example, if I have a

Re: sharing/swapping items between lists

2009-04-14 Thread Aaron Brady
On Apr 13, 11:52 pm, Aaron Brady wrote: > On Apr 13, 10:04 am, Ross wrote: > > > > > On Apr 11, 1:10 pm, a...@pythoncraft.com (Aahz) wrote: > > > > In article > > > <4fd78ac3-ba83-456b-b768-3a0043548...@f19g2000vbf.googlegroups.com>, > > > > Ross   wrote: > > > > >I'm trying to design an iterato

Downloading folders from a server

2009-04-14 Thread zaheer . agadi
Hi , I am trying to download folders using webDAV Protocol, I want to download the folders which in turn have many other folders. I am trying to read each and every folder and create the folder locally.How do I do this? If I have a folder structure like the following Folder1 | |_ Folder11(ha

Re: Should we separate business logic and ORM mapping classes?

2009-04-14 Thread Diez B. Roggisch
一首诗 wrote: > Hi, > > ( First, this is not a question about if we should use ORM. It's > question for these who are already using it. ) > > Usually, I only use ORM, like sqlalchemy just as an abstraction layer > of > database. So these mapping objects I wrote only contains data but not > behav

Nicing a thread

2009-04-14 Thread jesper
Hi, I would like to spawn a thread (on Unix) with a lower priority (higher niceness) than the main thread (which should stay at nice 0). What I have done is something like: import threading, os class MyThread(threading.Thread): def __init__(self): threading.Thread.__init__(self)

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Arnaud Delobelle
Arnaud Delobelle writes: > binops = ['add', 'sub', 'mul', 'div', 'radd', 'rsub'] # etc > unops = ['neg', 'abs', invert'] # etc Oops. There's a missing quote above. It should have been, of course: unops = ['neg', 'abs', 'invert'] # etc > > binop_meth = """ > def __%s__(self, other): > re

Re: Python inside C++

2009-04-14 Thread Ken Seehart
AJ Mayorga wrote: Hello all, I am looking for a way to statically compile pythonxx.dll into my C++ application, so that I can use It as an internal scripting language and either run the native python code or take an ELF from py2exe/pyinstaller and run that. The machines that will have

Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Steven D'Aprano
I have a subclass of int where I want all the standard arithmetic operators to return my subclass, but with no other differences: class MyInt(int): def __add__(self, other): return self.__class__(super(MyInt, self).__add__(other)) # and so on for __mul__, __sub__, etc. My quick-

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Paul McGuire
On Apr 14, 4:09 am, Steven D'Aprano wrote: > I have a subclass of int where I want all the standard arithmetic > operators to return my subclass, but with no other differences: > > class MyInt(int): >     def __add__(self, other): >         return self.__class__(super(MyInt, self).__add__(other))

Re: Using Python after a few years of Ruby

2009-04-14 Thread Stefaan Himpe
Hi, 1) Is there anything like a Python build tool? (Or do I even need something like that?) If you're going to run the python source code, you don't need anything. Python builds what it needs automagically. Some tools exist to build stand-alone executables though, if you'd like to do so (e.g.

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Gerard Flanagan
Steven D'Aprano wrote: I have a subclass of int where I want all the standard arithmetic operators to return my subclass, but with no other differences: class MyInt(int): def __add__(self, other): return self.__class__(super(MyInt, self).__add__(other)) # and so on for __mul__,

Re: Python inside C++

2009-04-14 Thread Christian Heimes
Ken Seehart wrote: > Picky note: The phrase "statically compile pythonxx.dll into my C++ > application" is not quite correct. A DLL is dynamically linked, not > statically linked. All this means is that you ship pythonxx.dll with > your application along with any other DLLs and pyd files you migh

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread andrew cooke
Arnaud Delobelle wrote: > I do this: > > binops = ['add', 'sub', 'mul', 'div', 'radd', 'rsub'] # etc > unops = ['neg', 'abs', invert'] # etc > > binop_meth = """ > def __%s__(self, other): > return type(self)(int.__%s__(self, other)) > """ > > unop_meth = """ > def __%s__(self): > return ty

Re: ANN: PyGUI 2.0

2009-04-14 Thread greg
Terry Reedy wrote: Does it work with 3.0? As it stands, almost certainly not. But you're welcome to try running it through 2to3 and see what happens. Relevant libraries would have to be available for 3.0 as well -- not sure what the state of play is there. -- Greg -- http://mail.python.org/m

binary file compare...

2009-04-14 Thread SpreadTooThin
I want to compare two binary files and see if they are the same. I see the filecmp.cmp function but I don't get a warm fuzzy feeling that it is doing a byte by byte comparison of two files to see if they are they same. What should I be using if not filecmp.cmp? -- http://mail.python.org/mailman/li

Re: How to create a virtual serial port?

2009-04-14 Thread JanC
Scott David Daniels wrote: > I'ms confused by this statement. What physical connector does your > "serial port" use to get the serial data to the Mac? I only have one > 3-year old Mac laptop to look at, and I just don't see anything that I > would call a serial port. USB *is* a serial port...

win32 wins settings

2009-04-14 Thread Toff
hello I don't understand why this doesn't woks. def setwins(self): from win32com.client import GetObject objWMIService = GetObject("winmgmts: {impersonationLevel=impersonate}!.\\root\\cimv2") colNicConfigs = objWMIService.ExecQuery ("SELECT * FROM Win32_NetworkAdapterC

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Diez B. Roggisch
andrew cooke wrote: > Arnaud Delobelle wrote: >> I do this: >> >> binops = ['add', 'sub', 'mul', 'div', 'radd', 'rsub'] # etc >> unops = ['neg', 'abs', invert'] # etc >> >> binop_meth = """ >> def __%s__(self, other): >> return type(self)(int.__%s__(self, other)) >> """ >> >> unop_meth = """ >

Re: read file with multiple data per line

2009-04-14 Thread Piet van Oostrum
> Eduardo (E) wrote: >E> Hello all, >E> I googled a lot but couldn't find anything that i could consider a >E> possible solution (though i am fairly new to the language and i think >E> this is the main cause of my failure). >E> This is the beginning of the file i have to parse: >E> Modifie

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Arnaud Delobelle
Steven D'Aprano writes: > I have a subclass of int where I want all the standard arithmetic > operators to return my subclass, but with no other differences: > > class MyInt(int): > def __add__(self, other): > return self.__class__(super(MyInt, self).__add__(other)) > # and so on

Re: any(), all() and empty iterable

2009-04-14 Thread Tim Chase
Peter Pearson wrote: On Sun, 12 Apr 2009 06:53:24 -0500, Tim Chase wrote: >From the docs: all(iterable) Return True if all elements of the iterable are true. Equivalent to: def all(iterable): for element in iterable: if not

Re: design question, metaclasses?

2009-04-14 Thread Piet van Oostrum
> Darren Dale (DD) wrote: >DD> On Apr 11, 2:15 pm, Darren Dale wrote: >>> I am working on a project that provides a high level interface to hdf5 >>> files by implementing a thin wrapper around h5py. I would like to >>> generalize the project so the same API can be used with other formats, >>

Re: path to executing .py file

2009-04-14 Thread MRAB
tiefeng wu wrote: Hello everybody! I'm working on my code repository (svn) auto-backup script which get hotcopy of svn repository directory to a directory named by date in same location where script file is, it executed by a timer program every 00:00 clock. Everything works fine when I'm testi

how to know argument name with which a function of extended c called

2009-04-14 Thread rahul
Hi, i need to write a 'c extension function' in this function i need to change argument value with which this function called. ie, if a python code like import changeValue as c arg="old value" c.changeValue(arg) print arg then it print

Re: sharing/swapping items between lists

2009-04-14 Thread Aahz
In article , Ross wrote: >On Apr 13, 9:08=A0am, a...@pythoncraft.com (Aahz) wrote: >> In article com>, >> Ross =A0 wrote: >>> >>>I'm sorry...my example was probably a bad one. A better example of >>>output I would like would be something like [[1,2],[3,4],[5,6]] and >>>then for the leftovers list

Re: wxpython question

2009-04-14 Thread Mike Driscoll
On Apr 13, 9:12 pm, Clemens Anhuth wrote: > isam uraiqat wrote: > > I HATE VISTA!! > > > it just needed to be installed on the site packages library, because > > it was installed by default on program files, > > > hope this might help another poor vista user > > Hello. > > Can you explain? > > Doe

Modifying the value of a float-like object

2009-04-14 Thread Eric . Le . Bigot
Hello, Is there a way to easily build an object that behaves exactly like a float, but whose value can be changed? The goal is to maintain a list [x, y,…] of these float-like objects, and to modify their value on the fly (with something like x.value = 3.14) so that any expression like "x +y" uses

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Arnaud Delobelle
"andrew cooke" writes: > Arnaud Delobelle wrote: >> I do this: >> >> binops = ['add', 'sub', 'mul', 'div', 'radd', 'rsub'] # etc >> unops = ['neg', 'abs', invert'] # etc >> >> binop_meth = """ >> def __%s__(self, other): >> return type(self)(int.__%s__(self, other)) >> """ >> >> unop_meth = "

Re: how to know argument name with which a function of extended c called

2009-04-14 Thread John Machin
On Apr 14, 10:35 pm, rahul wrote: > Hi, >   i need to write a 'c extension function' in this function i need to > change argument value with  which this function called. The appropriate way for a function to give output is to return a value, or a tuple of values. example: def get_next_token(inp

Re: any(), all() and empty iterable

2009-04-14 Thread Arnaud Delobelle
Tim Chase writes: > Peter Pearson wrote: >> On Sun, 12 Apr 2009 06:53:24 -0500, Tim Chase wrote: >From the docs: all(iterable) Return True if all elements of the iterable are true. Equivalent to: def all(iterable):

Re: how to know argument name with which a function of extended c called

2009-04-14 Thread Arnaud Delobelle
rahul writes: > Hi, > i need to write a 'c extension function' in this function i need to > change argument value with which this function called. > ie, > if a python code like > import changeValue as c > arg="old value" > c.changeValue(arg) >

Re: ValueError: I/O operation on closed file

2009-04-14 Thread Vinay Sajip
On Apr 14, 6:43 am, Dennis Lee Bieber wrote: > On Mon, 13 Apr 2009 16:44:44 -0700 (PDT), dj And Dennis' revised script works for me on Python 2.6 and [after converting print x to print(x)] Python 3.0 (both ActivePython installations). Regards, Vinay Sajip -- http://mail.python.org/mailman/list

iPython help, Docstring [source file open failed]

2009-04-14 Thread Kegan
I use iPython installed from macport. When I am in the iPython shell, I do the following: In [8]: from datetime import timedelta In [9]: timedelta?? Type: type Base Class: String Form: Namespace: Interactive File: /opt/local/Library/Frameworks/Python.framework/

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread andrew cooke
Arnaud Delobelle wrote: > "andrew cooke" writes: >> Arnaud Delobelle wrote: >>> class MyInt(int): >>> for op in binops: >>> exec binop_meth % (op, op) >>> for op in unops: >>> exec unop_meth % (op, op) >>> del op >> >> what's the "del" for? > > Without it, 'op

Re: any(), all() and empty iterable

2009-04-14 Thread Carl Banks
On Apr 12, 10:45 am, Tim Chase wrote: > > That's why you ask "Do you have any books called 'Robinson Crusoe'?" rather > > than "Are all your books called 'Robinson Crusoe'?". > > Mu.  If I don't have any books..."Have you stopped beating all > your wives?"  The question makes the presumption that

Re: [Python-Dev] PEP 382: Namespace Packages

2009-04-14 Thread M.-A. Lemburg
On 2009-04-07 19:46, P.J. Eby wrote: > At 04:58 PM 4/7/2009 +0200, M.-A. Lemburg wrote: >> On 2009-04-07 16:05, P.J. Eby wrote: >> > At 02:30 PM 4/7/2009 +0200, M.-A. Lemburg wrote: >> >> >> Wouldn't it be better to stick with a simpler approach and look for >> >> >> "__pkg__.py" files to detect na

Re: any(), all() and empty iterable

2009-04-14 Thread John Posner
Tim Chase wrote: I still prefer "Return False if any element of the iterable is not true" or "Return False if any element in the iterable is false" because that describes exactly what the algorithm does. Granted, anybody with a mote of Python skills can tell that from the algorithm, but if you

Re: Modifying the value of a float-like object

2009-04-14 Thread Eric . Le . Bigot
It looks like what is needed here are a kind of "mutable float". Is there a simple way of creating such a type? I don't mind changing the value through x.value = 1.23 instead of x = 1.23... :) On Apr 14, 3:03 pm, eric.le.bi...@spectro.jussieu.fr wrote: > Hello, > > Is there a way to easily build

Help with run command + variable.

2009-04-14 Thread Daniel Holm
Hi everybody, I'm creating my first app (SixA @ http://www.launchpad/gsixaxis) and I have gtk.combobox to chose a profile. When a profile is chosen I save the profiles name as a variable, and now I want to combine a command with the variable. Lets say that the user choses th profile firefox. This

Re: Modifying the value of a float-like object

2009-04-14 Thread David Robinow
On Tue, Apr 14, 2009 at 9:03 AM, wrote: > Hello, > > Is there a way to easily build an object that behaves exactly like a > float, but whose value can be changed?  The goal is to maintain a list > [x, y,…] of these float-like objects, and to modify their value on the > fly (with something like x.

Re: Modifying the value of a float-like object

2009-04-14 Thread David Smith
eric.le.bi...@spectro.jussieu.fr wrote: > It looks like what is needed here are a kind of "mutable float". Is > there a simple way of creating such a type? I don't mind changing the > value through x.value = 1.23 instead of x = 1.23... :) > > On Apr 14, 3:03 pm, eric.le.bi...@spectro.jussieu.fr

Re: Modifying the value of a float-like object

2009-04-14 Thread Christian Heimes
eric.le.bi...@spectro.jussieu.fr wrote: > Hello, > > Is there a way to easily build an object that behaves exactly like a > float, but whose value can be changed? The goal is to maintain a list > [x, y,…] of these float-like objects, and to modify their value on the > fly (with something like x.v

subprocess: reading from stdout hangs process termination, waiting for ENTER keyboard signal

2009-04-14 Thread giohappy
Hello everyone. I'm trying to use subprocess module to launch a Windows console application. The application prints some results to standard output and then waits for the user to press any key to terminte. I can't control this behaviour, as the application is not mine... I'm stuck at the very first

Re: Modifying the value of a float-like object

2009-04-14 Thread MRAB
Christian Heimes wrote: eric.le.bi...@spectro.jussieu.fr wrote: Hello, Is there a way to easily build an object that behaves exactly like a float, but whose value can be changed? The goal is to maintain a list [x, y,…] of these float-like objects, and to modify their value on the fly (with som

Re: [Python-Dev] PEP 382: Namespace Packages

2009-04-14 Thread P.J. Eby
At 05:02 PM 4/14/2009 +0200, M.-A. Lemburg wrote: I don't see the emphasis in the PEP on Linux distribution support and the remote possibility of them wanting to combine separate packages back into one package as good argument for adding yet another separate hierarchy of special files which Pytho

Re: Modifying the value of a float-like object

2009-04-14 Thread Peter Otten
eric.le.bi...@spectro.jussieu.fr wrote: > Alternatively, I'd be happy with a way of handling numerical > uncertainties in Python calculations (such as in "calculate the value > and uncertainty of a*sin(b) knowing that a=3.0 +/- 0.1 and b=1.00 +/- > 0.01"). Naive no warranties implementation: fr

Re: subprocess: reading from stdout hangs process termination, waiting for ENTER keyboard signal

2009-04-14 Thread MRAB
giohappy wrote: Hello everyone. I'm trying to use subprocess module to launch a Windows console application. The application prints some results to standard output and then waits for the user to press any key to terminte. I can't control this behaviour, as the application is not mine... I'm stuck

Re: read file with multiple data per line

2009-04-14 Thread Eduardo
On Apr 14, 12:32 am, Steven D'Aprano wrote: > On Tue, 14 Apr 2009 00:15:18 -0700, Eduardo wrote: > > Hello all, > > > I googled a lot but couldn't find anything that i could consider a > > possible solution (though i am fairly new to the language and i think > > this is the main cause of my failur

Re: ANN: PyGUI 2.0

2009-04-14 Thread Terry Reedy
greg wrote: Terry Reedy wrote: Does it work with 3.0? As it stands, almost certainly not. But you're welcome to try running it through 2to3 and see what happens. Relevant libraries would have to be available for 3.0 as well -- not sure what the state of play is there. Probably something is

History of python syntax development?

2009-04-14 Thread Ritwik
Hi all, I'm doing some work in programming languages and I'm looking for a short history of python development, from the point of view of the initial development of the syntax. I know I can go through the mailing lists and news groups (and I am doing that at the moment), and the python history blog

Re: Automatically generating arithmetic operations for a subclass

2009-04-14 Thread Sebastian Wiesner
> I have a subclass of int where I want all the standard arithmetic > operators to return my subclass, but with no other differences: > > class MyInt(int): > def __add__(self, other): > return self.__class__(super(MyInt, self).__add__(other)) > # and so on for __mul__, __sub__, e

Re: History of python syntax development?

2009-04-14 Thread Daniel Fetchinson
> I'm doing some work in programming languages and I'm looking for a > short history of python development, from the point of view of the > initial development of the syntax. I know I can go through the mailing > lists and news groups (and I am doing that at the moment), and the > python history bl

ANNOUNCING Tahoe-LAFS v1.4

2009-04-14 Thread zooko
ANNOUNCING Tahoe, the Least-Authority Filesystem, v1.4 The allmydata.org team is pleased to announce the release of version 1.4.1 of "Tahoe", the Lightweight-Authorization Filesystem. This is the first release of Tahoe-LAFS which was created solely as a labor of love by volunteers -- it is no lon

Re: sharing/swapping items between lists

2009-04-14 Thread Ross
On Apr 14, 5:57 am, a...@pythoncraft.com (Aahz) wrote: > In article , > > > > Ross   wrote: > >On Apr 13, 9:08=A0am, a...@pythoncraft.com (Aahz) wrote: > >> In article >com>, > >> Ross =A0 wrote: > > >>>I'm sorry...my example was probably a bad one. A better example of > >>>output I would like wou

Re: sharing/swapping items between lists

2009-04-14 Thread Ross
On Apr 14, 10:34 am, Ross wrote: > On Apr 14, 5:57 am, a...@pythoncraft.com (Aahz) wrote: > > > > > In article > > , > > > Ross   wrote: > > >On Apr 13, 9:08=A0am, a...@pythoncraft.com (Aahz) wrote: > > >> In article > > >> > >com>, > > >> Ross =A0 wrote: > > > >>>I'm sorry...my example was pro

Re: any(), all() and empty iterable

2009-04-14 Thread John O'Hagan
On Tue, 14 Apr 2009, Carl Banks wrote: > On Apr 12, 10:45 am, Tim Chase wrote: > > > That's why you ask "Do you have any books called 'Robinson Crusoe'?" > > > rather than "Are all your books called 'Robinson Crusoe'?". > > > > Mu.  If I don't have any books..."Have you stopped beating all > > you

show PDF in wxPython?

2009-04-14 Thread alejandro
I would like to import a pdf in a wxPython widget, but didn't find any solution. The imported PDF should work like if it were open in IE or Mozilla... Sugestions? Solutions? P.S. I would like to thank Dennis Lee Bieber for the help about parallel ports... I forgot to do it :-( -- http://ma

Re: any(), all() and empty iterable

2009-04-14 Thread Luis Alberto Zarrabeitia Gomez
Quoting John O'Hagan : > An exception, or at least a specific mention of the case of empty iterables > in the docs (as Tim Chase suggested), would have baffled me less than my > program telling me that the same items were both ubiquitous and entirely > absent from a list of sets! Well, they _w

Re: sending and receiving ipv6 multicasts

2009-04-14 Thread Martin v. Löwis
> I get the following error: "socket.error: [Errno 22] Invalid > argument". So it complains about the multicast address. The fragment py> import socket py> s = socket.inet_pton(socket.AF_INET6, "ff02::1") py> sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM) py> sock.bind(('', 9090)) py> s

Re: Using Python after a few years of Ruby

2009-04-14 Thread Emmanuel Surleau
Hi > > 1) Is there anything like a Python build tool? (Or do I > > even need something like that?) > > If you're going to run the python source code, you don't need anything. > Python builds what it needs automagically. Some tools exist to build > stand-alone executables though, if you'd like to do

Re: Using Python after a few years of Ruby

2009-04-14 Thread Emmanuel Surleau
Hi there, Ruby transfuge too. > Although I'm not 100% new to Python, most of my experience using high- > level languages is with Ruby. I had a job doing Rails web development > a little ways back and I really enjoyed it. At my current workplace > though, we're looking at using Python and I'm tryin

Re: ANN: PyGUI 2.0

2009-04-14 Thread member thudfoo
On Tue, Apr 14, 2009 at 10:02 AM, Terry Reedy wrote: > greg wrote: [...] fwiw, the following python script could be used, when run from the Tests directory, to selectively run the numbered tests: - runtests.py import glob import os import subprocess fr

Re: DVCSs wreck tkFileDialog

2009-04-14 Thread Alan G Isaac
More info: http://sourceforge.net/mailarchive/forum.php?thread_name=A46CBF978138744AAC019E6FF055EAB70F30AE%40apatlelsmail08.elsys.gtri.org&forum_name=tortoisehg-develop> Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list

Re: Using Python after a few years of Ruby

2009-04-14 Thread Alan G Isaac
On 4/14/2009 3:01 AM blahemailb...@gmail.com apparently wrote: 1) Rake - is there an equivalent of Rake? I've seen a bit about SCons, and it looks really nice, but it seems geared towards being a Make replacement for C/C++ rather than something that's used to work with Python itself. Is there any

Re: Re: Modifying the value of a float-like object

2009-04-14 Thread Dave Angel
eric.le.bi...@spectro.jussieu.fr wrote: It looks like what is needed here are a kind of "mutable float". Is there a simple way of creating such a type? I don't mind changing the value through x.value =.23 instead of x = 1.23... :) On Apr 14, 3:03 pm, eric.le.bi...@spectro.jussieu.fr wrote:

Re: History of python syntax development?

2009-04-14 Thread Chris Rebert
On Tue, Apr 14, 2009 at 10:01 AM, Ritwik wrote: > Hi all, > I'm doing some work in programming languages and I'm looking for a > short history of python development, from the point of view of the > initial development of the syntax. I know I can go through the mailing > lists and news groups (and

Re: show PDF in wxPython?

2009-04-14 Thread Stef Mientki
alejandro wrote: I would like to import a pdf in a wxPython widget, but didn't find any solution. The imported PDF should work like if it were open in IE or Mozilla... Sugestions? Solutions? wxPython has several options, all shown in the wxPython demo !! ( IE activeX, pdf-activeX ) btw ther

Re: iPython help, Docstring [source file open failed]

2009-04-14 Thread Przemyslaw Kaminski
Kegan wrote: > I use iPython installed from macport. When I am in the iPython shell, > I do the following: > > > In [8]: from datetime import timedelta > > In [9]: timedelta?? > Type: type > Base Class: > String Form: > Namespace: Interactive > File: /opt/local

Re: Modifying the value of a float-like object

2009-04-14 Thread Eric . Le . Bigot
Thank you all for your input. It is not yet obvious how to achieve the goal/need that I had in mind in the original post. Basically, I would need to be able to calculate the derive() function of Peter, but without knowing what arguments are passed to the function f under study. Here is why: I'

Re: Using Python after a few years of Ruby

2009-04-14 Thread Martin v. Löwis
> 1) Rake - is there an equivalent of Rake? I've seen a bit about SCons, > and it looks really nice, but it seems geared towards being a Make > replacement for C/C++ rather than something that's used to work with > Python itself. Is there anything like a Python build tool? Depends on what you want

Re: Modifying the value of a float-like object

2009-04-14 Thread Eric . Le . Bigot
Thanks Dave for your thoughtful remarks, which you sent right when I was writing a response to the previous posts. I was wondering about a kind "mutable float"; so you're right, it's not fully a float, because it's mutable. I'd like to have an object that behaves like a float in numerical calcula

Re: GUI Programming

2009-04-14 Thread David Cook
On 2009-04-12, Gabriel wrote: > I'm python newbie and i need to write gui for my school work in python. > I need to write it really quick, because i haven't much time .) > So question is, which of gui toolkits should i pick and learn? I heard > PyGTK and Glade are best for quick gui programming?

Re: any(), all() and empty iterable

2009-04-14 Thread Mark Dickinson
On Apr 14, 7:21 pm, Luis Alberto Zarrabeitia Gomez wrote: > It's more than that. Python's following the rules here. Maybe it could be > documented better, for those without a background in logic/discrete > mathematics, > but not changed. Agreed. I'd like to guess that in 93.7% of cases, when a

Data Model - database load

2009-04-14 Thread Anthony
Hello, I'm making a statistics tracking application and was wondering how my chosen data model design would affect performance. I'm not sure if I'm breaking up my objects into too granular a level in the interests of flexibility. class ParentStats """Summary level groups of stats""" class C

Network game using mysql

2009-04-14 Thread João Abrantes
Good evening, I am making an online game that stores its data in a mysql database. The thing is that I can't allow the players to interact directly with the important tables of database (they could cheat if I give them access) so I only allow them to write on a table named commands and then a

Re: [Python-Dev] PEP 382: Namespace Packages

2009-04-14 Thread M.-A. Lemburg
On 2009-04-14 18:27, P.J. Eby wrote: > At 05:02 PM 4/14/2009 +0200, M.-A. Lemburg wrote: >> I don't see the emphasis in the PEP on Linux distribution support and the >> remote possibility of them wanting to combine separate packages back >> into one package as good argument for adding yet another s

Re: Network game using mysql

2009-04-14 Thread Tino Wildenhain
Hi, João Abrantes wrote: Good evening, I am making an online game that stores its data in a mysql database. The thing is that I can't allow the players to interact directly with the important tables of database (they could cheat if I give them access) so I only allow them to write on a table

Play sound at wanted frequency

2009-04-14 Thread Matteo
I need to playback a sound on a linux machine of a pre-determined frequency like, say, 440 Hz. How can I do that with python? I found the ossaudiodev package, but it says that the ossaudiodev.write() method accepts data as a raw string. It doesn't explain what the string should be like, and the oss

Re: Play sound at wanted frequency

2009-04-14 Thread Diez B. Roggisch
Matteo schrieb: I need to playback a sound on a linux machine of a pre-determined frequency like, say, 440 Hz. How can I do that with python? I found the ossaudiodev package, but it says that the ossaudiodev.write() method accepts data as a raw string. It doesn't explain what the string should be

Re: zProblem

2009-04-14 Thread norseman
Gabriel Genellina wrote: En Mon, 13 Apr 2009 15:13:53 -0300, norseman escribió: Gabriel Genellina wrote: ...(snip) I can't visualize that working properly in my current need. The ...(snip) Below there is an attempt to reproduce the layout you describe in the PDF: from Tkinter import *

segmentation fault while using ctypes

2009-04-14 Thread sanket
Hello All, I am dealing with this weird bug. I have a function in C and I have written python bindings for it using ctypes. I can call this function for couple of times and then suddenly it gives me seg fault. But I can call same function from a C code for any number of times. I cannot get what'

Re: segmentation fault while using ctypes

2009-04-14 Thread Diez B. Roggisch
sanket schrieb: Hello All, I am dealing with this weird bug. I have a function in C and I have written python bindings for it using ctypes. I can call this function for couple of times and then suddenly it gives me seg fault. But I can call same function from a C code for any number of times.

Re: segmentation fault while using ctypes

2009-04-14 Thread MRAB
sanket wrote: Hello All, I am dealing with this weird bug. I have a function in C and I have written python bindings for it using ctypes. I can call this function for couple of times and then suddenly it gives me seg fault. But I can call same function from a C code for any number of times. I

Re: segmentation fault while using ctypes

2009-04-14 Thread sanket
On Apr 14, 4:00 pm, MRAB wrote: > sanket wrote: > > Hello All, > > > I am dealing with this weird bug. > > I have a function in C and I have written python bindings for it using > > ctypes. > > > I can call this function for couple of times and then suddenly it > > gives me seg fault. > > But I ca

Re: show PDF in wxPython?

2009-04-14 Thread norseman
alejandro wrote: I would like to import a pdf in a wxPython widget, but didn't find any solution. The imported PDF should work like if it were open in IE or Mozilla... Sugestions? Solutions? P.S. I would like to thank Dennis Lee Bieber for the help about parallel ports... I forgot to do it

Re: segmentation fault while using ctypes

2009-04-14 Thread sanket
On Apr 14, 3:56 pm, "Diez B. Roggisch" wrote: > sanket schrieb: > > > Hello All, > > > I am dealing with this weird bug. > > I have a function in C and I have written python bindings for it using > > ctypes. > > > I can call this function for couple of times and then suddenly it > > gives me seg f

Re: segmentation fault while using ctypes

2009-04-14 Thread MRAB
sanket wrote: On Apr 14, 4:00 pm, MRAB wrote: sanket wrote: Hello All, I am dealing with this weird bug. I have a function in C and I have written python bindings for it using ctypes. I can call this function for couple of times and then suddenly it gives me seg fault. But I can call same func

Re: segmentation fault while using ctypes

2009-04-14 Thread Aaron Brady
On Apr 14, 6:04 pm, sanket wrote: > On Apr 14, 4:00 pm, MRAB wrote: > > > > > sanket wrote: > > > Hello All, > > > > I am dealing with this weird bug. > > > I have a function in C and I have written python bindings for it using > > > ctypes. > > > > I can call this function for couple of times an

Re: Network game using mysql

2009-04-14 Thread Aaron Brady
On Apr 14, 4:14 pm, Tino Wildenhain wrote: > Hi, > > > > João Abrantes wrote: > > Good evening, > > > I am making an online game that stores its data in a mysql database. The > > thing is that I can't allow the players to interact directly with the > > important tables of database (they could chea

Re: binary file compare...

2009-04-14 Thread Adam Olsen
On Apr 13, 8:39 pm, Grant Edwards wrote: > On 2009-04-13, Peter Otten <__pete...@web.de> wrote: > > > But there's a cache. A change of file contents may go > > undetected as long as the file stats don't change: > > Good point.  You can fool it if you force the stats to their > old values after you

Re: sharing/swapping items between lists

2009-04-14 Thread Aaron Brady
On Apr 14, 12:37 pm, Ross wrote: > On Apr 14, 10:34 am, Ross wrote: > > > > > On Apr 14, 5:57 am, a...@pythoncraft.com (Aahz) wrote: > > > > In article > > > , > > > > Ross   wrote: > > > >On Apr 13, 9:08=A0am, a...@pythoncraft.com (Aahz) wrote: > > > >> In article > > > >> > > >com>, > > > >>

Re: read file with multiple data per line

2009-04-14 Thread woooee
If this is the record, then you can use split to get a list of the individual fields and then convert to int or float where necessary. rec = "2NHST1 C1 56 3.263 2.528 16.345 " rec_split = rec.split() print rec_split If you want to read two records at a time, then use all_data = open(name,

Re: segmentation fault while using ctypes

2009-04-14 Thread MRAB
Aaron Brady wrote: On Apr 14, 6:04 pm, sanket wrote: On Apr 14, 4:00 pm, MRAB wrote: sanket wrote: Hello All, I am dealing with this weird bug. I have a function in C and I have written python bindings for it using ctypes. I can call this function for couple of times and then suddenly it

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