Re: Problem with python 3.2 and circular imports
Rafael Durán Castañeda rafadurancastan...@gmail.com wrote... Thank you for your answer Frank, I think I've found the problem. I was calling modules from inside subpackages, and I need to use them from outside, so I have package in PYTHONPATH. is that correct? But now I have another question: Can I execute an script inside subpackage1 importig modules from subpackage2? Hi Rafael I am no expert, so I cannot answer you directly. In my case, my program started as a single module. As it grew, I started to split some parts off and store them in separate modules in the same directory. I placed 'import' statements in the main module, and it worked. Then I found the need for some modules to refer to objects in other modules, so I needed 'import' statements within the modules. I found myself hitting problems with circular imports from time to time, but with some help from this group and re-reading the docs I got over this hurdle. Only recently has my project got big enough to start thinking about packages. It adds complexity, but by reading the docs again, and thinking carefully about the structure, I have so far managed to handle the problems that occur. I found the 'modules' chapter in the tutorial a good place to start. Once you have fully grasped the contents, PEP 328 is a good resource for understanding what has changed in python 3.x. BTW, this group prefers 'bottom posting'. You will see that I have placed my response below yours. If you want to reply to this, please follow the same practice. Hope this helps to get you started. Frank -- http://mail.python.org/mailman/listinfo/python-list
Re: having both dynamic and static variables
On Sat, 05 Mar 2011 20:33:49 -0800, Westley Martínez wrote: On Sat, 2011-03-05 at 18:37 -0800, John Nagle wrote: It's worth having some syntax for constants. I'd suggest using let: +1 on syntax for constants. -0 for let. I'd prefer something more explicit, like const. I'm against constants, for the purpose of programmers should be smart enough to not set a variable to another value that should be static, Most programmers are smart enough not to rebind names which should be constant. The problem is, how do you know which names should be constant? A naming convention like ALL_CAPITALS helps, but not everybody sticks to the convention. Also, if constants are enforced by the compiler, that opens the door for many optimizations that currently Python can't do even in principle. but if Python were to have constants I think it would be better to use something more descriptive than 'let'. Also, because the defined constant is static, I think it would be better to use 'is' instead of '='. Example: No, we're talking about assignment, not a comparison operator. The `is` operator is equivalent to `==`, equals, not assignment. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Thu, 03 Mar 2011 11:43:12 -0700, Ian Kelly wrote: On Sun, Feb 27, 2011 at 7:15 AM, n00m n...@narod.ru wrote: http://www.spoj.pl/problems/TMUL/ Python's print a * b gets Time Limit Exceeded. If speed is the only thing you care about, then you can forget about fretting over whether 2.5 or 3.1 is faster. You're using the wrong language to begin with. Surely that depends on whether you care about execution speed or development speed. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
c++ data types in python script
Hi people, I've used SWIG module to embed python inside c++ app. I pass a list of objects (with lots of different properties of types string, float, custom types like URL, Software and finally of list of strings). Now I'm in python. URL and Software has str() method that converts their value to string recognizable by JSON. But the problem is with list of strings. So, as I said I passed std::liststd::string myObjects to python function. Then I iterate it and for each object in myObjects I create a python copy (serialize it) to be able to put into JSON format and store in appropriate file. object has property benchmarks of type liststring. I do: ... class PythonObject: def __init__(self, object): self.benchmarks = list() for s in object.benchmarks: self.benchmarks.append(s) ... and it fails, also I do: ... class PythonObject: def __init__(self, object): self.benchmarks = [unicode(s) for s in object.benchmarks] ... and it fails, also I do: ... class PythonObject: def __init__(self, object): for s in object.benchmarks: print s[0] + s[1] + s[2] print type(s) ... and it fails printing wor type 'str' Segmentation fault (core dumped) $ also I do: ... class PythonObject: def __init__(self, object): self.benchmarks = unicode(object.benchmarks) ... and it does not fail, instead it puts in JSON this string: ... benchmarks: mymodule.StringList; proxy of Swig Object of type 'std::list std::string, std::allocator std::string *' at 0xb63ed4e8, ... but it is not what I need What I'm trying to stress is that c++ objects should be converted (serialized) before putting them into json. Otherwise type errors occur and process fails. I love learning python and hope somebody may suggest me or tell something. Thank you all anyway! Arthur -- http://mail.python.org/mailman/listinfo/python-list
Re: What do I need to know in order to write a web application in python?
QT Designer looks very nice. I hope I can use it with PySide. I would rather use PySide than PyQT, because PyQT is not under LGPL license. -- http://mail.python.org/mailman/listinfo/python-list
Re: c++ data types in python script
Great! The solution is to use self.benchmarks = list(object.benchmarks). Now I'm battling with time_t type. C++ time_t converts to python int but it causes memore leaks due to destructor absence. I'm trying to figure it out. If anyone know, please share your thoughts. Be happy :) Arthur -- http://mail.python.org/mailman/listinfo/python-list
下载 below Download, in python.org site menu
On the English version of http://python.org I'm seeing 下载 as a menu item between Download and Community. AFAICT it's Simplified Chinese for 'download'. Is it's appearance intentional, or a leak through from a translation of the entire page? Regards, Alex PS Tested with 10.0.648.114 (75702) and Firefox 3.6.14 on Ubuntu 10.10/ en_GB locale. -- http://mail.python.org/mailman/listinfo/python-list
Re: 下载 below Download, in python.org site menu
Am 06.03.2011 12:18, schrieb Alex Willmer: On the English version of http://python.org I'm seeing 下载 as a menu item between Download and Community. AFAICT it's Simplified Chinese for 'download'. Is it's appearance intentional, or a leak through from a translation of the entire page? It's intentional. Notice that it goes to a different URL than the English download link. Chinese readers will know when to use it. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
Steven D'Aprano wrote: On Thu, 03 Mar 2011 11:43:12 -0700, Ian Kelly wrote: If speed is the only thing you care about, then you can forget about fretting over whether 2.5 or 3.1 is faster. You're using the wrong language to begin with. Surely that depends on whether you care about execution speed or development speed. s/care/care more/. People generally care about both to /some/ extent. (Probably being over-pedantic again...) -- Tom Zych / freethin...@pobox.com Would you like a lovely fluffy little white rabbit, little girl, or a cutesy wootesly little brown rabbit? Actually, I don't think my python would notice. -- http://mail.python.org/mailman/listinfo/python-list
Re: Extending dict (dict's) to allow for multidimensional dictionary
That's a very nice suggestion. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: Absolutely Insane Problem with Gmail
On Sat, Mar 5, 2011 at 11:11 PM, Littlefield, Tyler ty...@tysdomain.comwrote: ourEmail = ' myemaila...@gmail.com' ourEmail = ' q...@xxx.com' You redefine this twice. Right. The second definition, of course, overwrites the first. That is deliberate. I simply comment out the second when I'm testing. The second is, of course, bogus. But it works while the first doesn't!!! WHY??? You also don't define a variable down lower. # to_address = ourEmail, from_address = ourEmail, to_address = emailText, I could be wrong, but emailText isn't defined. No, in fact, emailText *is* defined. And it, too, works, *unless* it's going to a gmail address!! In fact, I just now tested it, commenting out the second bogus email address, and using another gmail address but different than the one defined as ourEmail, and everything works as expected. Therefore, it appears that gmail, for whatever reason, filters out emails send to the same address from which they are sent. Thanks, Beno -- http://mail.python.org/mailman/listinfo/python-list
Re: What do I need to know in order to write a web application in python?
On Mar 5, 7:42 pm, geremy condra debat...@gmail.com wrote: On Sat, Mar 5, 2011 at 3:49 AM, ErichCart ErichCart erichc...@gmail.com wrote: Visual Python seems to be exactly what I want. But it doesn't seem very popular. Perhaps it means that there are not many people who will be able to help if I have problems with it. Also judging by the amount of ads at visualpython.org, it also doesn't seem very serious. I looked into pyGTK, and I found something called Glade, which seems to be something similar to visual python. The latest version of Glade was released just this month, so it seems to be actively developed. Regarding Boa constructor, it is very old, isn't it? The latest news from this project date to the end of 2006. I don't expect it to support python 3 any time soon. So, Glade, is this what everybody uses? I mean programmers don't just use text editors to make GUI applications, do they? Yes, they do. It isn't that bad once you get used to it, Agreed. and it beats the snot out of trying to maintain the insensible gibberish that some of the autogen tools put out. I have a lot of experience with Qt Designer, I don't know about any of the other tools: 1. Qt Designer produces sensible well-formed XML, not gibberish. 2. The whole point of the tool is that you should _never_ have to edit the code it produces - if you need to extend ui designs, you do this by sub- classing. On a side note, you should check out pygui[0]- very, very nice GUI toolkit. Yay, looks good. Thanks, Greg. John -- -- http://mail.python.org/mailman/listinfo/python-list
How Translate This PHP
Hi;
How do I translate this PHP code?
if($ok){
echo returnValue=1;
}else{
echo returnValue=0;
}
In other words, when the email successfully sends, send back both the name
of the variable and its value.
TIA,
Beno
--
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Re: How Translate This PHP
On Sun, Mar 6, 2011 at 2:45 PM, Victor Subervi victorsube...@gmail.com wrote:
Hi;
How do I translate this PHP code?
if($ok){
echo returnValue=1;
}else{
echo returnValue=0;
}
From the code provided -
if ok:
print 'returnValue=1'
else:
print 'returnValue=0'
--
http://mail.python.org/mailman/listinfo/python-list
Re: How Translate This PHP
On Sun, Mar 6, 2011 at 10:53 AM, Noah Hall enali...@gmail.com wrote:
On Sun, Mar 6, 2011 at 2:45 PM, Victor Subervi victorsube...@gmail.com
wrote:
Hi;
How do I translate this PHP code?
if($ok){
echo returnValue=1;
}else{
echo returnValue=0;
}
From the code provided -
if ok:
print 'returnValue=1'
else:
print 'returnValue=0'
Ah. I thought I had to return something! Thanks,
Beno
--
http://mail.python.org/mailman/listinfo/python-list
Re: How Translate This PHP
How do I translate this PHP code?
if($ok){
echo returnValue=1;
}else{
echo returnValue=0;
}
print(return value = +str(ok));
--
http://mail.python.org/mailman/listinfo/python-list
Re: How Translate This PHP
On Sun, Mar 6, 2011 at 3:11 PM, Victor Subervi victorsube...@gmail.com wrote: Ah. I thought I had to return something! Well, based on what you asked, you would've, but based on the code, all it was doing is printing returnValue - value Of course, a better way of doing it would be to use formatting - For example, print 'returnValue=%d' % ok -- http://mail.python.org/mailman/listinfo/python-list
python data types in c++ code
Hi all, Ok, I managed to work with c++ data types in python and can store serialize c++ objects to store in json. Now the task is backward. I wrote a c++ code to get the list of objects using again python interface. The list of objects is returned. PyList. But I can't see how to convert PyObject as element of PyList to c++ data type or even how to convert or iterate PyList which is PyObject too. Please, whisper me the proper way I will go for. Be happy :) Arthur -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
Obviously if we'd use it in practice (in a web-museum ?) all pic's matrices should be precalculated only once and stored in a table with fourty fields v00 ... v93 like: --- pic_title v00v01v02... v93 --- bears2.jpg1234 4534 8922... 333 ... ... --- Then SQL query will look like this: select top 3 pic_title from table order by abs(v00 - w[0][0]) + abs(v01 - w[0][1]) + ... + abs(v93 - w[9][3]) here w[][] is the matrix of a newly-entering picture. P.S. If someone will encounter 2 apparently unrelated pics but for which ImSim gives value of their mutual diff. *** less than 20% *** please emailed them to me. -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On 02/27/2011 06:57 AM, n00m wrote: Steve, see a list of accepted langs there, in bottom dropdown: http://www.spoj.pl/submit/ There *was* Python 2.6. Then admins shifted back to 2.5. People vote by their legs. rr, is that you? -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
Arthur Mc Coy, 06.03.2011 17:40: Ok, I managed to work with c++ data types in python and can store serialize c++ objects to store in json. Now the task is backward. I wrote a c++ code to get the list of objects using again python interface. The list of objects is returned. PyList. But I can't see how to convert PyObject as element of PyList to c++ data type or even how to convert or iterate PyList which is PyObject too. Please, whisper me the proper way I will go for. You mentioned using SWIG, but I'd actually suggest using Cython instead. It will make it a lot easier (and faster) for you to convert data types between Python and C/C++ (and will also allow you to skip over most ref-counting problems). Since you appear to know C++ anyway, you should be able to get comfortable with it quite quickly. http://cython.org Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
Ok people,
I do:
for (Py_ssize_t i = 0; i PyList_Size(py_list); ++i) {
PuObject* obj = PyList_GetItem(py_list, i);
if (obj != NULL) {
// howto get obj properties of different types
(map, list, string, int, bool) ?
}
}
Very clear code. The question is in the comment :)
Let's play more,
it's like jazz,
let's explore,
Baby baby baby bass
Keep yourselves,
Arthur
--
http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
Stefan, great suggestion !! I will definitely bookmark this page and consider later. But my project dictate me use SWIG. I'm almost near the happy subend. Very curios on question I asked in previous message. Dear all, I love you too much :) Arthur -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
Stephan, you are lead developer over there :))) It's marketing, however very nice solution.. I will propose my bosses to rediscover their world assumptions. You know, they are still using SVN, they are very loosely coupled to the past. I have to wash their brains... Meantime still battling with PyObject properties which are so diverse and disperse that I don't know... Keep talking guys Arthur -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
In short, the answer is to use PyObject dictionary ? -- http://mail.python.org/mailman/listinfo/python-list
Re: What do I need to know in order to write a web application in python?
On Fri, Mar 4, 2011 at 6:07 PM, Paul Rubin no.email@nospam.invalid wrote: ErichCart ErichCart erichc...@gmail.com writes: By real-time, I mean that I want it to be similar to the way instant online chess works. Something like here: instantchess.com, but for RISK. If you want to do that in a web browser, the main technique for it is called AJAX and you'd write your application in Javascript. Pyjamas could probably do this nicely. It's a python - javascript translator, along with a set of widgets that allow you to write AJAX web interfaces and desktop applications - from the same codebase, just a different runtime. The feel of such coding is purportedly very much like writing a desktop application. Only thing is, the tests don't currently work that well in Google Chrome. But for Firefox and IE, it's already supposed to be pretty good. -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
Arthur Mc Coy, 06.03.2011 19:07: Stephan, you are lead developer over there :))) It's marketing, Let's say, as a core developer of Cython, I'm well aware of it's virtues, and I can tell you that my suggestion is actually well backed by the user feedback we get. You will find some of it on the right side of cython.org. The selection there is obviously biased, but I can confirm that it really matches with most of the non-technical feedback we get. Cython has a lot of happy users, and that's very rewarding to its core developers. Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
n00m n...@narod.ru writes: http://www.nga.gov/search/index.shtm http://deyoung.famsf.org/search-collections etc Seems they all offer search only by keywords and this kind. What about to submit e.g. roses2.jpg (copy) and to find its original? Assume we don't know its author neither its title Title: TinEye, author: http://ideeinc.com/ Search: http://www.tineye.com/ Example: http://www.tineye.com/search/2b3305135fa4c59311ed58b41da5d07f213e4d47/ Notice how it finds modified images. -- John Bokma j3b Blog: http://johnbokma.com/Facebook: http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development: http://castleamber.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Thu, Mar 3, 2011 at 10:43 AM, Ian Kelly ian.g.ke...@gmail.com wrote: On Sun, Feb 27, 2011 at 7:15 AM, n00m n...@narod.ru wrote: http://www.spoj.pl/problems/TMUL/ Python's print a * b gets Time Limit Exceeded. If speed is the only thing you care about, then you can forget about fretting over whether 2.5 or 3.1 is faster. You're using the wrong language to begin with. Actually, in my current project, Pypy's performance is bordering on stellar. It's much faster than CPython 2.x, CPython 3.x, CPython 2.x+Cython, CPython 3.x+Cython, CPython 2.x+Psyco or Jython. Interestingly, CPython 3.x+Cython (pyx) is the next best. I've placed a graph contrasting Python runtime performance for this project at http://stromberg.dnsalias.org/~dstromberg/backshift/ Yes, of course, this is just for this one project, and only for this project's critical section (which I'm optimizing relatively early to decrease the duration of my lengthy tests). Yours would almost certainly give a different graph. The problem being solved is a byte-at-a-time variable-length, shift-resistant blocking (checksum). BTW, about runtime vs compiler optimization: A JIT can theoretically give better performance than an optimizing compiler, because the optimizing compiler only has access to compile-time info, while the JIT has access to what's really happening, as it happens - so for example, branch prediction can be more accurate with the JIT, once you burn past the JIT'ing overhead. -- http://mail.python.org/mailman/listinfo/python-list
new to python, trying to choose a book.
hey. been looking into book for learning python(or what ever resource really) two books are frequently recommended, learn python the hard way and think python. i have also been recommended dive into python by one person, who said it was fantastic. but another person said it was dated and even when it was made, it wasn't very good. i have some experience with programming (not much) i know the basics of java like control flow and inheritance. but thats about it is head first python a good book? i quite liked what i read of head first python. -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Sun, Feb 27, 2011 at 6:27 AM, Tom Zych freethin...@pobox.com wrote: n00m wrote: Am I turmoiling your wishful thinking? You may nourish it till the end of time. Let us cease to nourish those fabled ones who dwell under bridges. +1 QOTW. Geremy Condra -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
On Mar 6, 8:55 pm, John Bokma j...@castleamber.com wrote: n00m n...@narod.ru writes: http://www.nga.gov/search/index.shtm http://deyoung.famsf.org/search-collections etc Seems they all offer search only by keywords and this kind. What about to submit e.g. roses2.jpg (copy) and to find its original? Assume we don't know its author neither its title Title: TinEye, author:http://ideeinc.com/ Search:http://www.tineye.com/ Example: http://www.tineye.com/search/2b3305135fa4c59311ed58b41da5d07f213e4d47/ Notice how it finds modified images. -- John Bokma j3b Blog:http://johnbokma.com/ Facebook:http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development:http://castleamber.com/ It's for kids. Such trifles can easily be cracked by e.g. Jorgen Grahn's algo (see his message) -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Mar 6, 7:25 pm, Michael Torrie torr...@gmail.com wrote: On 02/27/2011 06:57 AM, n00m wrote: Steve, see a list of accepted langs there, in bottom dropdown: http://www.spoj.pl/submit/There *was* Python 2.6. Then admins shifted back to 2.5. People vote by their legs. rr, is that you? Are you asking me? If so, my account there is http://www.spoj.pl/users/zzz/ -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
On Mar 6, 10:17 pm, n00m n...@narod.ru wrote: On Mar 6, 8:55 pm, John Bokma j...@castleamber.com wrote: n00m n...@narod.ru writes: http://www.nga.gov/search/index.shtm http://deyoung.famsf.org/search-collections etc Seems they all offer search only by keywords and this kind. What about to submit e.g. roses2.jpg (copy) and to find its original? Assume we don't know its author neither its title Title: TinEye, author:http://ideeinc.com/ Search:http://www.tineye.com/ Example: http://www.tineye.com/search/2b3305135fa4c59311ed58b41da5d07f213e4d47/ Notice how it finds modified images. -- John Bokma j3b Blog:http://johnbokma.com/ Facebook:http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development:http://castleamber.com/ It's for kids. Such trifles can easily be cracked by e.g. Jorgen Grahn's algo (see his message) Even his algo will be an overhead. Comparing meta-data/EXIF of image files will be enough in 99% cases. -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
PS The winner (just a schoolboy) of IOI 2009 lives in my town, not very far from my house. I'm proud to have such a neibour. His account on spoj: http://www.spoj.pl/users/tourist/ Of course he's also registered on many other online judge systems, incl. www.topcoder.com -- http://mail.python.org/mailman/listinfo/python-list
Re: having both dynamic and static variables
On Sun, 2011-03-06 at 07:58 +, Steven D'Aprano wrote: On Sat, 05 Mar 2011 20:33:49 -0800, Westley Martínez wrote: On Sat, 2011-03-05 at 18:37 -0800, John Nagle wrote: It's worth having some syntax for constants. I'd suggest using let: +1 on syntax for constants. -0 for let. I'd prefer something more explicit, like const. I'm against constants, for the purpose of programmers should be smart enough to not set a variable to another value that should be static, Most programmers are smart enough not to rebind names which should be constant. The problem is, how do you know which names should be constant? A naming convention like ALL_CAPITALS helps, but not everybody sticks to the convention. Also, if constants are enforced by the compiler, that opens the door for many optimizations that currently Python can't do even in principle. but if Python were to have constants I think it would be better to use something more descriptive than 'let'. Also, because the defined constant is static, I think it would be better to use 'is' instead of '='. Example: No, we're talking about assignment, not a comparison operator. The `is` operator is equivalent to `==`, equals, not assignment. -- Steven I'm confused. Can someone tell me if we're talking about constant as in 'fixed in memory' or as in 'you can't reassign' or both? -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
n00m n...@narod.ru writes: On Mar 6, 10:17 pm, n00m n...@narod.ru wrote: On Mar 6, 8:55 pm, John Bokma j...@castleamber.com wrote: n00m n...@narod.ru writes: http://www.nga.gov/search/index.shtm http://deyoung.famsf.org/search-collections etc Seems they all offer search only by keywords and this kind. What about to submit e.g. roses2.jpg (copy) and to find its original? Assume we don't know its author neither its title Title: TinEye, author:http://ideeinc.com/ Search:http://www.tineye.com/ Example: http://www.tineye.com/search/2b3305135fa4c59311ed58b41da5d07f213e4d47/ Notice how it finds modified images. -- John Bokma j3b Blog:http://johnbokma.com/ Facebook:http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development:http://castleamber.com/ It's for kids. Such trifles can easily be cracked by e.g. Jorgen Grahn's algo (see his message) Even his algo will be an overhead. Comparing meta-data/EXIF of image files will be enough in 99% cases. Yes, yes, we get it. You're so much smarter (but not smart enough to not quote a signature...). Anyway, I guess that's the reason big names use tineye and not your algorithm... -- John Bokma j3b Blog: http://johnbokma.com/Facebook: http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development: http://castleamber.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: new to python, trying to choose a book.
On Sun, 2011-03-06 at 11:21 -0800, sogeking99 wrote: hey. been looking into book for learning python(or what ever resource really) two books are frequently recommended, learn python the hard way and think python. i have also been recommended dive into python by one person, who said it was fantastic. but another person said it was dated and even when it was made, it wasn't very good. i have some experience with programming (not much) i know the basics of java like control flow and inheritance. but thats about it is head first python a good book? i quite liked what i read of head first python. I tried to read Dive into Python; it was boring. Firstly, there's the official Python tutorial, which I've only glanced over. Swaroop C H's A Byte of Python was the (e)book I read to learn programming. It's incredibly simple, which is why it's fantastic. For a more comprehensive tour of Python, I like Mark Lutz's books. I'm sure there are other great books, but that's all I've read on Python so far. -- http://mail.python.org/mailman/listinfo/python-list
Re: new to python, trying to choose a book.
I'd suggest Zed Shaw's amazing Learn Python The Hard Way [1] (which isn't as hard as it sounds) - and it's free over the web (but, I believe - you can buy a copy). I dislike Pilgrim's Dive Into Python, but that's just me (though I thoroughly recommend Dive Into HTML5 to anyone interested in HTML5) - many disagree. Haven't read Head First Python. [1] - http://learnpythonthehardway.org/index On Sun, Mar 6, 2011 at 2:21 PM, sogeking99 neilalt300...@gmail.com wrote: hey. been looking into book for learning python(or what ever resource really) two books are frequently recommended, learn python the hard way and think python. i have also been recommended dive into python by one person, who said it was fantastic. but another person said it was dated and even when it was made, it wasn't very good. i have some experience with programming (not much) i know the basics of java like control flow and inheritance. but thats about it is head first python a good book? i quite liked what i read of head first python. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
As for proper quoting: I read/post to this group via my web-browser. And for me everything looks OK. I don't even quite understand what exactly do you mean by your remark. I'm not a facebookie/forumish/twitterish thing. Btw I don't know what is the twitter. I don't need it, neither to know nor to use it. Oh... Pres. Medvedev knows what is the twitter and uses it. -- http://mail.python.org/mailman/listinfo/python-list
Re: Fun with 'str' and 'bytes'
On 04/03/2011 16:40, nn wrote: As far as I know, that is pretty much it. Also see: http://bugs.python.org/issue3982 That is a depressing bug report, and really comes across as people who don't use networking commenting on the requirements of people who write networking code. It's good to see that the idea was getting a bit more treatment last yeat. -- http://mail.python.org/mailman/listinfo/python-list
Re: What is the best book to learn Python from Perl and C++ background
On 04/03/2011 17:49, Ignoramus20691 wrote: I bought a Hello World! book for my 9 year old son. The book teached programming for kids and it does it in Python. I do not know any Python, but I am very comfortable with C++ and perl. I wrote a little over 100k lines of perl. I want to learn Python quickly to help him with his studies/fun. I would prefer a no shit book that quickly teaches a language to programmers. I moved to python after a heavy C++ background - I boosted myself to self-supporting status with OReilleys Learning Python on and off over the course of a weekend, skipping the parts that looked familiar. For some reason I didn't use the official python tutorial, though I have used it as a semi-reference on occasion since - it might be a good idea to start with that and see if it is efficient enough for you. -- http://mail.python.org/mailman/listinfo/python-list
Re: my computer is allergic to pickles
Miki Tebeka miki.teb...@gmail.com wrote: I'm using python to do some log file analysis and I need to store on disk a very large dict with tuples of strings as keys and lists of strings and numbers as values. I recommend that you'll use the shelve module. It stores data on disk and is more memory efficient than in-memory pickle objects. OK, I got this to work with marshal. What makes shelve better? Or, which situations does shelve suit better and which does marshal suit better? -- http://mail.python.org/mailman/listinfo/python-list
Re: ImSim: Image Similarity
n00m n...@narod.ru writes: As for proper quoting: I read/post to this group via my web-browser. And for me everything looks OK. I don't even quite understand what exactly do you mean by your remark. I'm not a facebookie/forumish/twitterish thing. Exactly. It's Usenet, something I've been using for, oh, just over 20 years now, and even then it was not new. You know, before the web thing you're talking about... -- John Bokma j3b Blog: http://johnbokma.com/Facebook: http://www.facebook.com/j.j.j.bokma Freelance Perl Python Development: http://castleamber.com/ -- http://mail.python.org/mailman/listinfo/python-list
Cluto like library for Python
I like Cluto as a data clustering software a lot. But its library binding is available only in C. Is there any python library which is similar to Cluto? -- http://mail.python.org/mailman/listinfo/python-list
Re: having both dynamic and static variables
John Nagle wrote: let allows the usual optimizations - constant folding, hoisting out of loops, compile time arithmetic, unboxing, etc. Only if the compiler knows the value of the constant, which it won't if it's defined in a different module. -- Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: 下载 below Download, in python.org site menu
On 3/6/2011 6:42 AM, Martin v. Loewis wrote: Am 06.03.2011 12:18, schrieb Alex Willmer: On the English version of http://python.org I'm seeing 下载 as a menu item between Download and Community. AFAICT it's Simplified Chinese for 'download'. Is it's appearance intentional, or a leak through from a translation of the entire page? It's intentional. Notice that it goes to a different URL than the English download link. Which is a synonym for the English download link (/getit is /download at present) Perhaps a translated page is planned? Chinese readers will know when to use it. Why a special link just for Chinese and not several other languages? -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Fun with 'str' and 'bytes'
On 3/6/2011 4:55 PM, Nicholas Devenish wrote: On 04/03/2011 16:40, nn wrote: As far as I know, that is pretty much it. Also see: http://bugs.python.org/issue3982 That is a depressing bug report, and really comes across as people who don't use networking commenting on the requirements of people who write networking code. It's good to see that the idea was getting a bit more treatment last yeat. I added the following note to that issue. struct.pack, not mentioned here, is a binary bytes formatting function. It can do ascii bytes mixed with binary octets. It works the same in Python 2 and 3. Str.bytes does two things: convert objects to strings according to the contents of field specifiers; interpolate the resulting strings into a template string according to the locations of the field specifiers. If desired bytes represent encoded text, then encoding computed text is the obvious Py3 solution. For some mixed ascii-binary uses, struct.pack is not as elegant as a bytes.format might be. But I think such a method should use struct format codes within field specifiers to convert objects into binary bytes rather than text. Note that struct codes include s = C char[] = Py bytes of possibly unspecified length copied unchanged. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: 下载 below Download, in python.org site menu
It's intentional. Notice that it goes to a different URL than the English download link. Which is a synonym for the English download link (/getit is /download at present) Perhaps a translated page is planned? No, translation is not the motivation at all. Chinese readers will know when to use it. Why a special link just for Chinese and not several other languages? Because only Chinese users may have to bypass URL filters that selectively censor content from python.org. Let's see how long censors need to pick up this discussion and ban more of Python across the Great Firewall :-( Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Cluto like library for Python
You have several option for interfacing with C libraries: Cython, swig, boost-python, ctypes ... You can find several machine learning packages mentioned at http://web.media.mit.edu/~stefie10/technical/pythonml.html, I have no experience with any of them so I can't recommend any. HTH -- Miki Tebeka miki.teb...@gmail.com http://pythonwise.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: my computer is allergic to pickles
Or, which situations does shelve suit better and which does marshal suit better? shelve ease of use and the fact it uses the disk to store objects makes it a good choice if you have a lot of object, each with a unique string key (and a tuple of strings can be converted to and from a string). db = shelve.open(/tmp/foo.db) db[key1] = (1, 2, 3) ... Marshal is faster and IIRC more geared toward network operations. But I haven't used it that much ... -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
// howto get obj properties of different types (map, list, string, int, bool) ? Python's C API is very well documented. You can use http://docs.python.org/c-api/object.html?highlight=pyobject#PyObject_GetAttr to get attributes or http://docs.python.org/c-api/object.html?highlight=pyobject#PyObject_GetItem to get items (from dictionaries and maps). HTH -- Miki Tebeka miki.teb...@gmail.com http://pythonwise.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
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PyWeek 12 (April 2011) is registration is open!
The 12th Python Game Programming Challenge (PyWeek) is almost upon us. It'll run from the 3rd to the 10th of April. Registration for teams and individuals is now open on the website: http://pyweek.org/ The PyWeek challenge: - Invites entrants to write a game in one week from scratch either as an individual or in a team, - Is intended to be challenging and fun, - Will hopefully increase the public body of game tools, code and expertise, - Will let a lot of people actually finish a game, and - May inspire new projects (with ready made teams!) If you've never written a game before and would like to try things out then perhaps you could try either: The tutorial I presented at LCA 2010, Introduction to Game Programming: http://www.lca2010.org.nz/wiki/Tutorials/Introduction_to_game_programming The book Invent Your Own Computer Games With Python: http://inventwithpython.com/ Richard Jones http://pyweek.org -- http://mail.python.org/mailman/listinfo/python-list
Re: my computer is allergic to pickles
GSO gso...@yahoo.co.uk wrote: On 5 March 2011 02:14, MRAB pyt...@mrabarnett.plus.com wrote: ... Any comments, suggestions? You obviously can't feed your computer pickles then. How about a tasty tidbit of XML? Served up in a main dish of DOM, or serially if preferred? Well, right now it takes three lines to save the dict object: data_file = open(data_filename, 'wb') marshal.dump(analysis, file, 2) data_file.close() and three to load it. I doubt I could do it that easily in XML _and_ the data file would be enormous. (XML always is, let's be honest. The file doesn't need to be human readable or editable.) -- http://mail.python.org/mailman/listinfo/python-list
Re: having both dynamic and static variables
On Sun, 06 Mar 2011 12:59:55 -0800, Westley Martínez wrote: I'm confused. Can someone tell me if we're talking about constant as in 'fixed in memory' or as in 'you can't reassign' or both? Python already has fixed in memory constants. They are immutable objects like strings, ints, floats, etc. Once you create a string spam, you cannot modify it. This has been true about Python forever. What Python doesn't have is constant *names*. Once you bind an object to a name, like this: s = spam you can't modify the *object*, but you can rebind the name: s = Nobody expects the Spanish Inquisition! and now your code that expects s to be spam will fail. So the only new feature under discussion is a way to bind-once names, which many people call constants. Perhaps the name is not the best, since I'm sure some people will be surprised that you can do this: # hypothetical example const L = [1, 2, 3] L.append(4) # works del L[:] # works L = [] # fails but I call that a feature, not a bug. If you want an immutable constant, use a tuple, not a list. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: python data types in c++ code
On Sun, Mar 6, 2011 at 10:07 AM, Arthur Mc Coy 1984docmc...@gmail.comwrote: You know, they are still using SVN, they are very loosely coupled to the past. Cython's very nice if you don't plan to do more than C/C++ with Python. SWIG might be better if you intend to do more VHLL's than Python alone. But about SVN: I'm not sure it's really dying. Yes, a lot of distributed development has moved off of SVN, and is better off for having done so, but I believe some environments (especially corporate environments) just prefer having a central server. -- http://mail.python.org/mailman/listinfo/python-list
Re: questions about multiprocessing
I've got some new problems and I tried to search on Google but got no
useful information.
I want to download some images with multiprocessing.pool
In my class named Renren, I defined two methods:
def getPotrait(self, url):
# get the current potraits of a friend on Renren.com
try:
r = urllib2.urlopen(url)
except urllib2.URLError:
print Time out
tmp = re.search('large_[\d\D]*.jpg', url)
image_name = tmp.group()
img = r.read()
output = open(image_name, 'wb')
output.write(img)
output.close()
def getLargePotraits(self):
tasks = self.makeTaskList()
pool = Pool(processes = 3)
pool.map(self.getPotrait, tasks)
tasks is a list of URLs of images, I want to download these images and
save them locally.
In another python file, I wrote this:
from renren import Renren
# get username and password for RenRen.com
username = raw_input('Email: ')
password = raw_input('Password: ')
print
a = Renren(username, password)
a.login()
a.getLargePotraits()
However, when I try to run this file, I received an error message:
Exception in thread Thread-1:
Traceback (most recent call last):
File /usr/lib/python2.6/threading.py, line 532, in
__bootstrap_inner
self.run()
File /usr/lib/python2.6/threading.py, line 484, in run
self.__target(*self.__args, **self.__kwargs)
File /usr/lib/python2.6/multiprocessing/pool.py, line 225, in
_handle_tasks
put(task)
PicklingError: Can't pickle type 'instancemethod': attribute lookup
__builtin__.instancemethod failed
--
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Re: What do I need to know in order to write a web application in python?
On 2011-03-05, ErichCart ErichCart erichc...@gmail.com wrote: Visual Python seems to be exactly what I want. But it doesn't seem very popular. Perhaps it means that there are not many people who will be able to help if I have problems with it. Also judging by the amount of ads at visualpython.org, it also doesn't seem very serious. I looked into pyGTK, and I found something called Glade, which seems to be something similar to visual python. The latest version of Glade was released just this month, so it seems to be actively developed. Regarding Boa constructor, it is very old, isn't it? The latest news from this project date to the end of 2006. I don't expect it to support python 3 any time soon. So, Glade, is this what everybody uses? I mean programmers don't just use text editors to make GUI applications, do they? I've been doing (mostly smallish) GUI programs on and off for 20 years, and that's all I've ever used. I tried the point-and-grunt method a couple and found it to be time consuming and the results to be bad (resizing never worked right). -- Grant -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Feb 27, 11:57 pm, n00m n...@narod.ru wrote: http://www.spoj.pl/ There's your problem. I'd say most Python 3.x adopters are using it for something other than working out whose performance dick is the longest. -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
On Sun, 06 Mar 2011 20:28:19 -0800, alex23 wrote: On Feb 27, 11:57 pm, n00m n...@narod.ru wrote: http://www.spoj.pl/ There's your problem. I'd say most Python 3.x adopters are using it for something other than working out whose performance dick is the longest. In fairness, the Python Dev team is very aware of the risk of performance degradation. Performance is important, but it is not *so important* that it outweighs everything else. The question that needs to be asked is not Is Python 3 fast?, but instead Is Python 3 fast enough?. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
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AW: import python module from C++ code
Hi, von Arthur Mc Coy: Still need the answer to the question: howto embed given python file (which contains python class and its members) into the c++ application ? There is no straight way of embedding a Python module into a c++ application. You will have to embed the python interpreter, and command it to load the module in question and execute the code you want. I have to pass the arguments from c++ to python and back so I need to do conversions. They are ok. Fails PyImport_Import(my_module) call saying No module called mymodule. Then I need to create a mymodule based on given python file (its name mymodule.py). Can it be achieved using SWIG ? Did you configure the module search path properly? Regards, Markus -- http://mail.python.org/mailman/listinfo/python-list
Re: Extending dict (dict's) to allow for multidimensional dictionary
Looks a good idea. I use this kind of recursive dicts to represent tree like datastruct in python. Like: car[ford][taurus][price]=... car[toyota][corolla][mpg]=... car[toyota][corolla][price]=... It would be good if it could be combined with class2dict (converting dict elemnets into attributes of a class/instance), http://vsbabu.org/mt/archives/2003/02/13/joy_of_python_classes_and_dictionaries.html so the former would look a bit nicer: car.toyota.corolla.mpg=... car.toyota.corolla.price=... Does anybody have another idea for representing tree-like data? Is there another type for trees in python? Ravi ra.ravi@gmail.com wrote: I found a solution here: http://parand.com/say/index.php/2007/07/13/simple-multi-dimensional-dictionaries-in-python/ Please tell how good is it? -- http://mail.python.org/mailman/listinfo/python-list
Re: I'm happy with Python 2.5
http://www.spoj.pl/forum/viewtopic.php?f=20t=8264 That's all what I meant to say in here. User numerix (German?) knows ropes of Python miles far better than e.g. me. -- http://mail.python.org/mailman/listinfo/python-list
[issue4806] Function calls taking a generator as star argument can mask TypeErrors in the generator
Changes by Daniel Urban urban.dani...@gmail.com: -- nosy: +durban ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4806 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7689] Pickling of classes with a metaclass and copy_reg
Changes by Daniel Urban urban.dani...@gmail.com: -- nosy: +durban ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7689 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11400] Remove reference to pre 1.5 assignment behavior
Georg Brandl ge...@python.org added the comment: Thanks, fixed in f7e04a9566c4. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11400 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11337] Nothing refers to footnote [1] on page 6. Simple Statements in Language Reference
Georg Brandl ge...@python.org added the comment: Fixed in 949a099a87ca. The detection of unused footnotes would be a docutils thing, not a Sphinx thing. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11337 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11338] No list of Python hg repositories
Georg Brandl ge...@python.org added the comment: Does this need any more action? -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11338 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11392] Turtle - better explain 'chaos' demo
Georg Brandl ge...@python.org added the comment: Applied in e6d9a8e38cc8. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11392 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11405] Wrong reference to string module in tutorial/inputoutput.rst
Georg Brandl ge...@python.org added the comment: Fixed in 59e464a1bbf0. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11405 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11373] Fix 2 new typos in the docs
Georg Brandl ge...@python.org added the comment: Fixed the built-in spelling in 13bc0511b3d3. I did not do the other change; having two-level relative clauses is not really readable. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11373 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11412] Section numbers in the Library Reference have a trailing period
Georg Brandl ge...@python.org added the comment: This looks fine to me -- isn't it a mere stylistic issue? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11412 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11223] interruption of locks by signals not guaranteed when the semaphore implementation is not used
Changes by Antoine Pitrou pit...@free.fr: -- nosy: +neologix ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11223 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11227] [DOC] asyncore - use 'Host' header in HTTP example
Georg Brandl ge...@python.org added the comment: Fixed in b630a135a86c. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11227 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11239] regexp-howto - add missing } to metachars
Georg Brandl ge...@python.org added the comment: Fixed in 3ec0a764ab5c. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11239 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11395] print(s) fails on Windows with long strings
STINNER Victor victor.stin...@haypocalc.com added the comment: I did some tests: os.write(1, b'X'*length) does always fail with length = 63842. It does sometimes fail with length 35000. The maximum looks completly random: as written in Microsoft documentation, The maximum size of the buffer will depend on heap usage... 32000 looks arbitrary. I would prefer 2^15-1 (32767) because it looks less magical :-) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11395 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11292] Curses - add A_REVERSE to attributes table
Georg Brandl ge...@python.org added the comment: Fixed in d9292abe80da. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11292 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11294] Locale - update uniform ERA_*_FMT doc
Georg Brandl ge...@python.org added the comment: Fixed in 6f861f98a3c5. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11294 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11239] regexp-howto - add missing } to metachars
Ezio Melotti ezio.melo...@gmail.com added the comment:
Actually '}' is not a metachar, the metachars should be only |()[{.+*?^$\.
re.match('^a+(}+)b+$', '}bbb')
_sre.SRE_Match object at 0xb77aa860
re.match('^a+(}+)b+$', '}bbb').group(1)
'}'
--
nosy: +ezio.melotti
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[issue11239] regexp-howto - add missing } to metachars
Georg Brandl ge...@python.org added the comment: Since ] was in the list, I've added } as well. (It's never a bad idea to quote ] and } unconditionally.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11239 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11410] Use GCC visibility attrs in PyAPI_*
Antoine Pitrou pit...@free.fr added the comment: Why the cygwin changes? Are they related? Also, is the change in Python/getargs.c necessary? -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11410 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11410] Use GCC visibility attrs in PyAPI_*
Changes by Antoine Pitrou pit...@free.fr: -- stage: - patch review type: - feature request versions: +Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11410 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11185] test_wait4 error on AIX
Charles-Francois Natali neolo...@free.fr added the comment: If test_wait3 and test_fork1 pass, then yes, it's probably an issue with AIX's wait4. See http://fixunix.com/aix/84872-sigchld-recursion.html: Replace the wait4() call with a waitpid() call... like this: for(n=0;waitpid(-1, status, WNOHANG) 0; n++) ; Or, compile the existing code with the BSD library: cc -o demo demo.c -D_BSD -lbsd Both will work... The current problem is that child process is not seen by the wait4() call, so that when signal is rearmed, it immediately goes (recursively) into the child_handler() function. So it seems that under AIX, posix_wait4 should be compiled with -D_BSD -lbsd. Could you try this ? If this doesn't do the trick, then avoiding passing WNOHANG could be the second option. -- nosy: +neologix ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11185 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11413] Idle doesn't start
New submission from Chris ceonnbo...@yahoo.com: Hi, I just installed Python 3.1.1 via link in the book Python Programming for the absolute beginner third edition. But Idle won't start. When I try to open Idle the Windows hourglass just flash briefly but nothing happens after that. No error messages. My operating system is XP Professional Version 2002 Service Pack 3. I have uninstalled and reinstalled several times but nothing changes. I select Install for All Users during the installation. I have also tried installing instead the 3.2 version from the python.org website but the same issue arises - idle doesn't launch. Does anyone know what the problem is? Really want to get going with the program! -- components: IDLE messages: 130165 nosy: Chris priority: normal severity: normal status: open title: Idle doesn't start type: behavior versions: Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11413 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11411] Fix typo in Makefile
Antoine Pitrou pit...@free.fr added the comment: Looks fine, please commit. -- assignee: - twouters nosy: +pitrou stage: - commit review versions: +Python 2.7, Python 3.1, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11411 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
Vetoshkin Nikita nikita.vetosh...@gmail.com added the comment: Generator listdir() could be useful if I have a directory with several millions of files and I what to process just a hundred. -- nosy: +nvetoshkin ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4806] Function calls taking a generator as star argument can mask TypeErrors in the generator
Daniel Urban urban.dani...@gmail.com added the comment: I think the patch isn't entirely correct. It uses PyIter_Check for detecting the case when an *iterable* raises TypeError, but that function actually checks for an *iterator*. The check on the tp_iter member mentioned by Amaury Forgeot d'Arc probably would be better, but even that wouldn't detect every iterable: Its presence normally signals that the instances of this type are iterable (although sequences may be iterable without this function). (http://docs.python.org/dev/py3k/c-api/typeobj.html#PyTypeObject.tp_iter) (Apparently any object with a __getitem__ is iterable. By the way, collections.abc.Iterable also doesn't detect this case.) -- versions: +Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4806 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5800] make wsgiref.headers.Headers accept empty constructor
SilentGhost ghost@gmail.com added the comment: Here's the single-file patch against the revision. -- Added file: http://bugs.python.org/file21016/issue5800.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5800 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5800] make wsgiref.headers.Headers accept empty constructor
Changes by SilentGhost ghost@gmail.com: Removed file: http://bugs.python.org/file19681/test_wsgiref.py.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5800 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5800] make wsgiref.headers.Headers accept empty constructor
Changes by SilentGhost ghost@gmail.com: Removed file: http://bugs.python.org/file19797/headers.py.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5800 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5800] make wsgiref.headers.Headers accept empty constructor
Changes by SilentGhost ghost@gmail.com: Removed file: http://bugs.python.org/file19804/wsgiref.rst.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5800 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11387] Tkinter, callback functions
Nikolay Fomichev morphsa...@gmail.com added the comment:
Here it is...
import sys
if sys.version_info[0] == 3:
import tkinter as tk
from tkinter import messagebox
from tkinter import filedialog
else:
import Tkinter as tk
import tkMessageBox as messagebox
import tkFileDialog as filedialog
class App():
def __init__(self):
self.root = tk.Tk()
self.btnMsg = tk.Button(self.root, text='Click me')
self.btnMsg.pack()
self.btnMsg.bind('Button-1', self.clickMsg)
self.btnFd = tk.Button(self.root, text='Click me too')
self.btnFd.pack()
self.btnFd.bind('Button-1', self.clickFd)
self.btnCommand = tk.Button(self.root, text='And now click me')
self.btnCommand.pack()
self.btnCommand.config(command=self.clickCommand)
self.root.mainloop()
def clickMsg(self, event):
messagebox.showerror(title='Error!', message='The button is sunken!')
def clickFd(self, event):
filedialog.askdirectory(title='Choose a directory')
def clickCommand(self):
messagebox.showinfo(title='Success!', message='The button is raised.')
App()
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[issue10924] Adding salt and Modular Crypt Format to crypt library.
SilentGhost ghost@gmail.com added the comment: Above-mentioned fix was commited in rev 62994662676a -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10924 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10924] Adding salt and Modular Crypt Format to crypt library.
SilentGhost ghost@gmail.com added the comment: Above-mentioned fix was committed in 0586c699d467 and 62994662676a -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10924 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10924] Adding salt and Modular Crypt Format to crypt library.
Changes by SilentGhost ghost@gmail.com: -- Removed message: http://bugs.python.org/msg130171 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10924 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11387] Tkinter, callback functions
Guilherme Polo ggp...@gmail.com added the comment:
I have a different problem here on Mac, but I can manage to reproduce
your issue if I apply the following patch:
Index: Lib/tkinter/__init__.py
===
--- Lib/tkinter/__init__.py (revision 88757)
+++ Lib/tkinter/__init__.py (working copy)
@@ -920,9 +920,9 @@
self.tk.call('bindtags', self._w, tagList)
def _bind(self, what, sequence, func, add, needcleanup=1):
Internal function.
-if isinstance(func, str):
-self.tk.call(what + (sequence, func))
-elif func:
+#if isinstance(func, str):
+#self.tk.call(what + (sequence, func))
+if func:
funcid = self._register(func, self._substitute,
needcleanup)
cmd = ('%sif {[%s %s] == break} break\n'
This should help someone else to produce a patch for this problem you
reported. It is interesting that this same patch fixes the problem I
have here (I get a SIGSEGV if I click the cancel button side the
askdirectory dialog).
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[issue11290] ttk.Combobox['values'] String Conversion to Tcl
Guilherme Polo ggp...@gmail.com added the comment: Does the attached patch work for you ? -- keywords: +patch Added file: http://bugs.python.org/file21017/patch11290.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11290 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4350] Remove dead code from Tkinter.py
Guilherme Polo ggp...@gmail.com added the comment: If we consider the meaning of dead code as that used in compilers, then I meant out of date code. If you want to add support for tk::ButtonEnter then I believe you should open a new issue and raise your points there. Anyway, have you read http://www.mail-archive.com/python-list@python.org/msg210494.html ? Does it relate to your use case ? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4350 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
