PySide Becomes a Qt Add-on
PySide [1] has now finished migration from its previous standalone setup to Qt Project [2] infrastructure. Being a Qt Add-on provides PySide a permanent home and perfect alignment with Qt Frameworks. Furthermore, the project gets improved visibility, as well as a simple, carefully thought out meritocratic project structure. In addition to the wiki that is already hosted by Qt, the PySide mailing list [3] and the bug tracker [4] are also now hosted by Qt. More information on the Qt Project can be found on the project web site [2]. The PySide project now follows Qt Project's governance model [5]. The Maintainer for API Extractor, Generatorrunner, and Shiboken is Marcelo Lira. The Maintainer for the PySide component is Hugo Parente Lima. Paulo Alcantara is an Approver for PySide. All other project roles are informal. Srini Kommoori has kindly volunteered to be the webmaster and wikimaster for the project. To developers using PySide the migration is mostly transparent. PySide is still available under the same licensing terms, and the project facilities are still the mostly unchanged. Instead of having a separate Bugzilla instance, the PySide project now utilizes Qt's Jira bug tracker [4]. Also the mailing list address has changed to pys...@qt-project.org [3]. Qt Project uses Gerrit [6] for code reviews. Developers contributing code to PySide should do it using Gerrit from now on. Read-only access to the git source code repositories is still provided via Gitorious [7]. *About PySide* PySide is a Python Qt bindings project initiated by Nokia. PySide provides access to not only the complete Qt framework but also Qt Mobility, as well as to generator tools for rapidly generating Python bindings for any C++ libraries. The PySide project is a Qt Add-on, sharing the same infrastructure and governance model as the open Qt Project itself. PySide is developed in the open, with all facilities you would expect from any modern open source project such as all code in a git repository [7], and an open bug tracker [4] for reporting bugs. [1] http://www.pyside.org [2] http://qt-project.org [3] http://lists.qt-project.org/mailman/listinfo/pyside [4] https://bugreports.qt-project.org [5] http://wiki.qt-project.org/The_Qt_Governance_Model [6] http://codereview.qt-project.org [7] http://qt.gitorious.org/pyside Best regards, Matti Airas -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
ANN: Yappi 0.62 released
Hi all, A new version of Yappi (a thread-aware profiler for Python) has been released: 0.62. This version's most important feature is that Yappi, finally supports per-thread CPU time profiling. Can be installed via easy_install, pip or from the source directly. See: http://code.google.com/p/yappi/ Regards, -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Monthly Python Meeting in Madrid (Spain)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Next Thursday, 8th March. http://www.python-madrid.es/post/reunion-marzo-2012-python-madrid/ - -- Jesus Cea Avion _/_/ _/_/_/_/_/_/ j...@jcea.es - http://www.jcea.es/ _/_/_/_/ _/_/_/_/ _/_/ jabber / xmpp:j...@jabber.org _/_/_/_/ _/_/_/_/_/ . _/_/ _/_/_/_/ _/_/ _/_/ Things are not so easy _/_/ _/_/_/_/ _/_/_/_/ _/_/ My name is Dump, Core Dump _/_/_/_/_/_/ _/_/ _/_/ El amor es poner tu felicidad en la felicidad de otro - Leibniz -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBT1Y7SJlgi5GaxT1NAQKOmQQAmRSz5Kk1ZAE5iEBiUiB5XRKVVntPfcA1 FflzHu2ZawULVlcnLMj2mh6USzOSqrRqz5mFZA9RFQWjeN6s1wa/x8hUytUFH90t BirdqeLjzZMoU1eyRlGggSjqR+VLDqqpxFq8aWbKDC3+t5u+UmZMjvHQo0zBGbcZ CDcITqWR2Ds= =e495 -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: pickle/unpickle class which has changed
Gelonida N wrote: Is there anyhing like a built in signature which would help to detect, that one tries to unpickle an object whose byte code has changed? No. The only thing that is stored is the protocol, the format used to store the data. The idea is to distinguish old and new pickled data and start some 'migration code' fi required The only thing, that I thought about so far was adding an explicit version number to each class in order to detect such situations. If you know in advance that your class will undergo significant changes you may also consider storing more stable data in a file format that can easily be modified, e. g. json. -- http://mail.python.org/mailman/listinfo/python-list
Help: how to protect the module 'sys' and 'os'
Hi~ alls, I have to limit somebody modify the attr of 'sys''os'? e.g. you can't append sys.path. Someone has a good method? now my way: modified the source code of python ,_PyObject_GenericSetAttrWithDict, because if you want to reset the value, you need to invoke this function. --- best regards pytom -- http://mail.python.org/mailman/listinfo/python-list
Decoding unicode is not supported in unusual situation
I'm getting line 79, in tounicode return(unicode(s, errors='replace')) TypeError: decoding Unicode is not supported from this, under Python 2.7: def tounicode(s) : if type(s) == unicode : return(s) return(unicode(s, errors='replace')) That would seem to be impossible. But it's not. s is generated from the suds SOAP client. The documentation for suds says: Suds leverages python meta programming to provide an intuative API for consuming web services. Runtime objectification of types defined in the WSDL is provided without class generation. I think that somewhere in suds, they subclass the unicode type. That's almost too cute. The proper test is isinstance(s,unicode) John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Why this recursive import fails?
I found it is a bug http://bugs.python.org/issue13187 -- http://mail.python.org/mailman/listinfo/python-list
Re: Get tkinter text to the clipboard
bugzilla-mail-...@yandex.ru wrote: How can I get something from tkinter gui to another program ? tkinter on python 3.2 on kde4 How about import tkinter root = tkinter.Tk() root.clipboard_clear() root.clipboard_append(whatever) -- http://mail.python.org/mailman/listinfo/python-list
Re: help: confused about python flavors....
On 07/03/2012 06:24, Steven D'Aprano wrote: On Tue, 06 Mar 2012 20:06:37 -0800, amar Singh wrote: Hi, I am confused between plain python, numpy, scipy, pylab, matplotlib. Python is a programming language. It comes standard with many libraries for doing basic mathematics, web access, email, etc. Numpy is a library for doing scientific numerical maths work and fast processing of numeric arrays. Scipy is another library for scientific work. It is separate from, but uses, Numpy. Matplotlib is a project for making graphing and plotting of numeric data easy in Python. Pylab is a project to be Python's version of Matlab: it intends to be an integrated bundle of Python the programming language, Numpy, Scipy, and Matplotlib all in one easy-to-use application. I have high familiarity with matlab, but the computer I use does not have it. So moving to python. What should I use? and the best way to use it. I will be running matlab-like scripts sometimes on the shell prompt and sometimes on the command line. Pylab is intended to be the closest to Matlab, but I don't know how close it is. Also, Pylab is NOT compatible with Matlab: its aim is to be an alternative to Matlab, not to be a clone. So it cannot run Matlab scripts. You might also like to look at Sage: http://www.sagemath.org/ Sage is a Python project aimed to be an alternative to Mathematica. Ultimately, you will have to look at the packages, see their features, perhaps try them for a while (they are all free software, so the only cost is your time), and decide for yourself which one meets your needs. We can't answer that, because we don't know what you need. Matplotlib is excellent, it has an extensive pile of docs and examples, and the mailing list is extremely helpful. -- Cheers. Mark Lawrence. -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
John Nagle na...@animats.com writes: I think that somewhere in suds, they subclass the unicode type. That's almost too cute. The proper test is isinstance(s,unicode) Woot, you finally discovered polymorphism - congratulations! Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Error importing __init__ declared variable from another package
On Wed, Feb 29, 2012 at 1:38 AM, Jason Veldicott jasonveldic...@gmail.com wrote: Hi, I have a simple configuration of modules as beneath, but an import error is reported: /engine (__init__ is empty here) engine.py /sim __init__.py The module engine.py imports a variable instantiated in sim.__init__ as follows: from sim import var_name var_name.func() The following error messaged is received on the func() call above (Eclipse PyDev): undefined variable from import: func Are you rephrasing or is this really the error message? If so run your program again on the command-line. Then please cut and paste the error message together with the traceback. Any idea why this is causing an error? What version of Python are you using? What does sim/__init__.py contain? Thanks Peter. I'm using Python 2.6, but it works at the command line. The error only appears in Eclipse as a red cross in the margin. The exact error msg, as appears in a floating text caption on mouse over, is as I mentioned (capitalised). Perhaps it is some issue in PyDev, maybe related to the version of Python I'm using. I'm in the process of trying to solve another related import problem, and wished to resolve this one in the hope that it might shed light on the other. But as it works beside the error icon appearing, I might just ignore it and spare the trouble of precise identification of cause. Please report that as a bug in the PyDev sf tracker (please attach a sample project where this problem can be reproduced). Cheers, Fabio -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
John Salerno johnj...@gmail.com writes: The Beautiful Soup 4 documentation was very clear, and BS4 itself is so simple and Pythonic. And best of all, since version 4 no longer does the parsing itself, you can choose your own parser, and it works with lxml, so I'll still be using lxml, but with a nice, clean overlay for navigating the tree structure. I haven't used BS4 but have made good use of earlier versions. Main thing to understand is that an awful lot of HTML in the real world is malformed and will break an XML parser or anything that expects syntactically invalid HTML. People tend to write HTML that works well enough to render decently in browsers, whose parsers therefore have to be tolerant of bad errors. Beautiful Soup also tries to make sense of crappy, malformed, HTML. Partly as a result, it's dog slow compared to any serious XML parser. But it works very well if you don't mind the low speed. -- http://mail.python.org/mailman/listinfo/python-list
Need help in wx.ListBox edit
Hi , I am using wxWidget for GUI programming. I need help in editing text appended in wx.ListBox(). Which wx API's do I need to use ? I would like to edit text on mouse double click event . Thanks in advance. Praveen. The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other than the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
de...@web.de (Diez B. Roggisch) writes: John Nagle na...@animats.com writes: I think that somewhere in suds, they subclass the unicode type. That's almost too cute. The proper test is isinstance(s,unicode) Woot, you finally discovered polymorphism - congratulations! If by “discovered” you mean “broke”. John, polymorphism entails that it *doesn't matter* whether the object inherits from any particular type; it only matters whether the object behaves correctly. So rather than testing whether the object inherits from ‘unicode’, test whether it behaves how you expect – preferably by just using it as though it does behave that way. -- \ Lucifer: “Just sign the Contract, sir, and the Piano is yours.” | `\ Ray: “Sheesh! This is long! Mind if I sign it now and read it | _o__)later?” —http://www.achewood.com/ | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
On Wed, 07 Mar 2012 22:18:50 +1100, Ben Finney wrote: de...@web.de (Diez B. Roggisch) writes: John Nagle na...@animats.com writes: I think that somewhere in suds, they subclass the unicode type. That's almost too cute. The proper test is isinstance(s,unicode) Woot, you finally discovered polymorphism - congratulations! If by “discovered” you mean “broke”. John, polymorphism entails that it *doesn't matter* whether the object inherits from any particular type; it only matters whether the object behaves correctly. So rather than testing whether the object inherits from ‘unicode’, test whether it behaves how you expect – preferably by just using it as though it does behave that way. I must admit that I can't quite understand John Nagle's original post, so I could be wrong, but I *think* that both you and Diez have misunderstood the nature of John's complaint. I *think* he is complaining that some other library -- suds? -- has a broken test for Unicode, by using: if type(s) is unicode: ... instead of if isinstance(s, unicode): ... Consequently, when the library passes a unicode *subclass* to the tounicode function, the type() is unicode test fails. That's a bad bug. It's arguable that the library shouldn't even use isinstance, but that's an argument for another day. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: RotatingFileHandler Fails
Hi nac, NTSafeLogging.py is working fine without any errors, but its not rotating the log files as rotatingfilehandler does. Do you have any working sample with NTSafeLogging which rotates the log file. logging issue with subprocess.Popen can be solved using this code import threading lock = threading.RLock() def acquire_lock(): lock.acquire() def release_lock(): lock.release() call the acquire_lock() at the begining of method and release_lock() at the end -- View this message in context: http://python.6.n6.nabble.com/RotatingFileHandler-Fails-tp4542769p4554381.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
GUI components in python
Hi I am stuck with the brain workshop software implemented using python. The code involves a lot of GUI elements and i am familar only with the basic python programming. I would like to know whether there are built in classes to support GUI elements or arethey project dependant. -- janaki -- http://mail.python.org/mailman/listinfo/python-list
Porting the 2-3 heap data-structure library from C to Python
I am planning to port the 2-3 heap data-structure as described by Professor Tadao Takaoka in Theory of 2-3 Heaps published in 1999 and available in PDF: http://www.cosc.canterbury.ac.nz/tad.takaoka/2-3heaps.pdf The source-code used has been made available: http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.h http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.c I plan on wrapping it in a class. This tutorial I used to just test out calling C within Python (http://richizo.wordpress.com/2009/01/25/calling-c-functions-inside-python/) and it seems to work, but this might not be the recommended method. Any best practices for how best to wrap the 2-3 heap data-structure from C to Python? Thanks for all suggestions, Alec Taylor -- http://mail.python.org/mailman/listinfo/python-list
Re: Porting the 2-3 heap data-structure library from C to Python
Alec Taylor, 07.03.2012 15:25: I am planning to port the 2-3 heap data-structure as described by Professor Tadao Takaoka in Theory of 2-3 Heaps published in 1999 and available in PDF: http://www.cosc.canterbury.ac.nz/tad.takaoka/2-3heaps.pdf The source-code used has been made available: http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.h http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.c I plan on wrapping it in a class. This tutorial I used to just test out calling C within Python (http://richizo.wordpress.com/2009/01/25/calling-c-functions-inside-python/) and it seems to work, but this might not be the recommended method. Any best practices for how best to wrap the 2-3 heap data-structure from C to Python? For data structures, where performance tends to matter, it's usually best to start with Cython right away, instead of using ctypes. http://cython.org/ Here's a tutorial for wrapping a C library with it: http://docs.cython.org/src/tutorial/clibraries.html Stefan -- http://mail.python.org/mailman/listinfo/python-list
Python 3.2 and MS Outlook
Is there documentation showing how to read from a Microsoft Outlook server using Python 3.2. I've done it with 2.x, but can't find anything to help me with 3.2. Thanks, --greg -- http://mail.python.org/mailman/listinfo/python-list
Re: RotatingFileHandler Fails
Hi, Actually NonInheritedRotatingFileHandler is rotating the log files but some times it falis and showing I/O errors while the log file limit reaches the given size. Thanks Arun -- View this message in context: http://python.6.n6.nabble.com/RotatingFileHandler-Fails-tp4542769p4554781.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
Re: Porting the 2-3 heap data-structure library from C to Python
Alec Taylor alec.tayl...@gmail.com writes: The source-code used has been made available: http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.h http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.c I plan on wrapping it in a class. You should get acquainted with the Python/C API, which is the standard way of extending Python with high-performance (and/or system-specific) C code. See Extending and Embedding and Python/C API sections at http://docs.python.org/. There is also a mailing list for help with the C API, see http://mail.python.org/mailman/listinfo/capi-sig for details. -- http://mail.python.org/mailman/listinfo/python-list
Re: Porting the 2-3 heap data-structure library from C to Python
Hrvoje Niksic, 07.03.2012 16:48: Alec Taylor writes: The source-code used has been made available: http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.h http://www.cosc.canterbury.ac.nz/research/RG/alg/ttheap.c I plan on wrapping it in a class. You should get acquainted with the Python/C API If it proves necessary, yes. which is the standard way of extending Python with high-performance (and/or system-specific) C code. Well, it's *one* way. Certainly not the easiest way, neither the most portable and you'll have a hard time making it the fastest. Stefan -- http://mail.python.org/mailman/listinfo/python-list
deal with cookie in python 2.3
Dear All, right now I use python to capture data from a internal website. The website uses cookie to store authorization data. But there is no HttpCookieProcessor in python 2.3? Is there anybody know, how to deal with cookie in python 2.3? and could give me a sample code? thanks a lot Julian-- http://mail.python.org/mailman/listinfo/python-list
Project
Please, tell me how to develop project on how people intract with social networing sites. -- http://mail.python.org/mailman/listinfo/python-list
Re: help: confused about python flavors....
On Mar 7, 9:41 am, Dennis Lee Bieber wlfr...@ix.netcom.com wrote:
On Tue, 6 Mar 2012 20:06:37 -0800 (PST), amar Singh
jagteraho2...@gmail.com declaimed the following in
gmane.comp.python.general:
Hi,
I am confused between plain python, numpy, scipy, pylab, matplotlib.
I have high familiarity with matlab, but the computer I use does not
have it. So moving to python.
What should I use? and the best way to use it. I will be running
matlab-like scripts sometimes on the shell prompt and sometimes on the
command line.
If Matlab compatibility is a high constraint, I'll speak heresy and
suggest you might look at Octavehttp://en.wikipedia.org/wiki/GNU_Octave
Python is stand-alone programming/scripting language. Numpy is an
extension package adding array/matrix math operations but the syntax
won't be a direct match to Matlab; Scipy is an extension package that,
well, extends Numpy. Matplotlib is a separate package for graphical
plotting of array data. {simplistic explanation}
--
Wulfraed Dennis Lee Bieber AF6VN
wlfr...@ix.netcom.com HTTP://wlfraed.home.netcom.com/
Thanks everyone for helping me on this.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Project
In mailman.475.1331137499.3037.python-l...@python.org Dev Dixit devdixit1...@gmail.com writes: Please, tell me how to develop project on how people intract with social networing sites. First you need a more detailed description of exactly what you want. -- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, The Gashlycrumb Tinies -- http://mail.python.org/mailman/listinfo/python-list
Python-2.6.1 ctypes test cases failing
Hi All, I have the following setup Kernel version: linux-2.6.32.41 Python Version: Python-2.6.1 Hardware target: MIPS 64bit I am just trying to run python test cases, Observed that on my MIPS 64bit system only _ctypes related test cases are failing. Is there any available patch for this issue ?? Only _ctypes test cases are failing: root@cavium-octeonplus:~# root@cavium-octeonplus:~# python /usr/lib32/python2.6/test/test_ctypes.py . .. test_doubleresult (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_floatresult (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_intresult (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_longdoubleresult (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_longlongresult (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_wchar_parm (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_wchar_result (ctypes.test.test_functions.FunctionTestCase) ... FAIL test_longdouble (ctypes.test.test_callbacks.Callbacks) ... FAIL test_integrate (ctypes.test.test_callbacks.SampleCallbacksTestCase) ... FAIL test_wchar_parm (ctypes.test.test_as_parameter.AsParamPropertyWrapperTestCase) ... FAIL test_wchar_parm (ctypes.test.test_as_parameter.AsParamWrapperTestCase) ... FAIL test_wchar_parm (ctypes.test.test_as_parameter.BasicWrapTestCase) ... FAIL test_qsort (ctypes.test.test_libc.LibTest) ... FAIL test_sqrt (ctypes.test.test_libc.LibTest) ... FAIL test_double (ctypes.test.test_cfuncs.CFunctions) ... FAIL test_double_plus (ctypes.test.test_cfuncs.CFunctions) ... FAIL test_float (ctypes.test.test_cfuncs.CFunctions) ... FAIL test_float_plus (ctypes.test.test_cfuncs.CFunctions) ... FAIL test_longdouble (ctypes.test.test_cfuncs.CFunctions) ... FAIL test_longdouble_plus (ctypes.test.test_cfuncs.CFunctions) ... FAIL --Thanks and Regards For things to change, we must change -Naresh Bhat -- http://mail.python.org/mailman/listinfo/python-list
Re: Project
Pay a smart developer! Sent from my iPhone On Mar 7, 2012, at 4:46 AM, Dev Dixit devdixit1...@gmail.com wrote: Please, tell me how to develop project on how people intract with social networing sites. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
RE: are int, float, long, double, side-effects of computer engineering?
Dennis Lee Bieber wrote: It wouldn't surprise me to find out that modern CompSci degrees don't even discuss machine representation of numbers. As a fairly recent graduate, I can assure you that they still do. Well, I should say at least my school did since I cannot speak for every other school. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python-2.6.1 ctypes test cases failing
On 3/7/2012 12:43 PM, Naresh Bhat wrote: Hi All, I have the following setup Kernel version: linux-2.6.32.41 Python Version: Python-2.6.1 Hardware target: MIPS 64bit I am just trying to run python test cases, Observed that on my MIPS 64bit system only _ctypes related test cases are failing. Is there any available patch for this issue ?? There have been patches to ctypes since 2.6.1. At minimum, you should be using the latest version of 2.6. Even better, perhaps, would be the latest version of 2.7, since it contain patches applied after 2.6 went to security fixes only. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
On 3/7/2012 3:42 AM, Steven D'Aprano wrote: I *think* he is complaining that some other library -- suds? -- has a broken test for Unicode, by using: if type(s) is unicode: ... instead of if isinstance(s, unicode): ... Consequently, when the library passes a unicode *subclass* to the tounicode function, the type() is unicode test fails. That's a bad bug. No, that was my bug. The library bug, if any, is that you can't apply unicode(s, errors='replace') to a Unicode string. TypeError(Decoding unicode is not supported) is raised. However unicode(s) will accept Unicode input. The Python documentation (http://docs.python.org/library/functions.html#unicode;) does not mention this. It is therefore necessary to check the type before calling unicode, or catch the undocumented TypeError exception afterward. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
sys.stdout.detach() results in ValueError
I want to write out some binary data to stdout in Python3. I thought the way to do this was to call detach on sys.stdout. But apparently, you can't. Here is a minimal script: #!/usr/bin/env python3.1 import sys fp = sys.stdout.detach() Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in Same in Python 3.1.4 and Python 3.2.2 So, what do I do if I want to send binary data to stdout? -- Peter Kleiweg http://pkleiweg.home.xs4all.nl/ -- http://mail.python.org/mailman/listinfo/python-list
Python recursive tree, linked list thingy
I have a list of defective CCD pixels and I need to find clusters where a cluster is a group of adjacent defective pixels. This seems to me to be a classic linked list tree search.I take a pixel from the defective list and check if an adjacent pixel is in the list. If it is I add the pixel to the cluster and remove it from the defective list. I then check an adjacent pixel of the new pixel and so on down the branch until I don't find a defective pixel. The I move up to the previous pixel and check the next adjacent pixel and so on until I'm back at the head I can't find any more defective adjacent pixels. How do you handle this sort of thing in Python? -- http://mail.python.org/mailman/listinfo/python-list
RE: Project
Please, tell me how to develop project on how people intract with social networing sites. This sounds more like a social sciences study than anything programming related... And since I don't do such sites, it may be intractable... Or he could be wanting to know how to use something like Facebook API, but with such a vague description it is hard to say. Even harder to be interested in helping since that is such a broad scope. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python recursive tree, linked list thingy
On Wed, Mar 7, 2012 at 12:49 PM, Wanderer wande...@dialup4less.com wrote: I have a list of defective CCD pixels and I need to find clusters where a cluster is a group of adjacent defective pixels. This seems to me to be a classic linked list tree search.I take a pixel from the defective list and check if an adjacent pixel is in the list. If it is I add the pixel to the cluster and remove it from the defective list. I then check an adjacent pixel of the new pixel and so on down the branch until I don't find a defective pixel. The I move up to the previous pixel and check the next adjacent pixel and so on until I'm back at the head I can't find any more defective adjacent pixels. How do you handle this sort of thing in Python? A set of defective pixels would be the probable choice, since it offers efficient membership testing. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python recursive tree, linked list thingy
On 07/03/2012 19:49, Wanderer wrote:
I have a list of defective CCD pixels and I need to find clusters
where a cluster is a group of adjacent defective pixels. This seems to
me to be a classic linked list tree search.I take a pixel from the
defective list and check if an adjacent pixel is in the list. If it is
I add the pixel to the cluster and remove it from the defective list.
I then check an adjacent pixel of the new pixel and so on down the
branch until I don't find a defective pixel. The I move up to the
previous pixel and check the next adjacent pixel and so on until I'm
back at the head I can't find any more defective adjacent pixels. How
do you handle this sort of thing in Python?
Something like this could work:
clusters = []
while defective_set:
to_do = {defective_set.pop()}
done = set()
while to_do:
pixel = to_do.pop()
neighbours = {n for n in defective_set if are_adjacent(n, pixel)}
defective_set -= neighbours
to_do |= neighbours
done.add(pixel)
clusters.append(done)
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Re: Python recursive tree, linked list thingy
Am 07.03.2012 20:49, schrieb Wanderer: I have a list of defective CCD pixels and I need to find clusters where a cluster is a group of adjacent defective pixels. This seems to me to be a classic linked list tree search.I take a pixel from the defective list and check if an adjacent pixel is in the list. If it is I add the pixel to the cluster and remove it from the defective list. I then check an adjacent pixel of the new pixel and so on down the branch until I don't find a defective pixel. The I move up to the previous pixel and check the next adjacent pixel and so on until I'm back at the head I can't find any more defective adjacent pixels. How do you handle this sort of thing in Python? I'd do something like (code not tested): defective_list = [(x1, y1), (x2, y2), ...] #list of coordinates of #defective pixel #build one cluster: cluster_start = defective_list.pop() #starting point buf = [] #buffer for added pixels buf.push(cluster_start) cluster = [] cluster.push(cluster_start) while len(buf)0: i = buf.pop() for b, d in itertools.product(xrange(2), [-1,1]): #4 neighbours j = list(i) j[b] += d j = tuple(j) if outside_lcd(j) or j in cluster or j not in defective_list: continue defective_list.remove(j) cluster.push(j) buf.push(j) return cluster and repeat it until defective_list is empty. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python recursive tree, linked list thingy
On Wed, Mar 7, 2012 at 1:03 PM, Ian Kelly ian.g.ke...@gmail.com wrote:
A set of defective pixels would be the probable choice, since it
offers efficient membership testing.
Some actual code, using a recursive generator:
def get_cluster(defective, pixel):
yield pixel
(row, column) = pixel
for adjacent in [(row - 1, column), (row, column - 1),
(row, column + 1), (row + 1, column)]:
if adjacent in defective:
defective.remove(adjacent)
for cluster_pixel in get_cluster(defective, adjacent):
yield cluster_pixel
defective = {(327, 415), (180, 97), (326, 415), (42, 15),
(180, 98), (325, 414), (325, 415)}
clusters = []
while defective:
pixel = defective.pop()
clusters.append(list(get_cluster(defective, pixel)))
from pprint import pprint
pprint(clusters)
Cheers,
Ian
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Re: What's the best way to write this regular expression?
Ok, first major roadblock. I have no idea how to install Beautiful Soup or lxml on Windows! All I can find are .tar files. Based on what I've read, I can use the easy_setup module to install these types of files, but when I went to download the setuptools package, it only seemed to support Python 2.7. I'm using 3.2. Is 2.7 just the minimum version it requires? It didn't say something like 2.7+, so I wasn't sure, and I don't want to start installing a bunch of stuff that will clog up my directories and not even work. What's the best way for me to install these two packages? I've also seen a reference to using setup.py...is that a separate package too, or is that something that comes with Python by default? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
what is best method to set sys.stdout to utf-8?
In Python 3, there seem to be two ways to set sys.stdout to
utf-8 after the script has started:
sys.stdout = codecs.getwriter('utf-8')(sys.stdout.detach())
sys.stdout = io.TextIOWrapper(sys.stdout.detach(), encoding='utf-8')
I guess the second is better. At start-up, type(sys.stdout) is
class '_io.TextIOWrapper', and it's also after using the
second method.
After using the first method, type(sys.stdout) is changed to
class 'encodings.utf_8.StreamWriter'.
Should I always use the second method?
--
Peter Kleiweg
http://pkleiweg.home.xs4all.nl/
--
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Re: What's the best way to write this regular expression?
On Wed, Mar 7, 2012 at 1:39 PM, John Salerno johnj...@gmail.com wrote: Ok, first major roadblock. I have no idea how to install Beautiful Soup or lxml on Windows! All I can find are .tar files. Based on what I've read, I can use the easy_setup module to install these types of files, but when I went to download the setuptools package, it only seemed to support Python 2.7. I'm using 3.2. Is 2.7 just the minimum version it requires? It didn't say something like 2.7+, so I wasn't sure, and I don't want to start installing a bunch of stuff that will clog up my directories and not even work. There is a fork of setuptools called distribute that supports Python 3. What's the best way for me to install these two packages? I've also seen a reference to using setup.py...is that a separate package too, or is that something that comes with Python by default? setup.py is a file that should be included at the top-level of the .tar files you downloaded. Generally, to install something in that manner, you would navigate to that top-level folder and run python setup.py install. If you have multiple Python versions installed and want to install the package for a specific version, then you would use that version of Python to run the setup.py file. -- http://mail.python.org/mailman/listinfo/python-list
Python site-packages permission denied?
What do I need to do to successfully install a package onto python so that I can use it as a module? I have tried in terminal in the correct directory python2.7 ./setup.py install but it says permission denied. Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ python2.7.1 ./setup.py install -bash: python2.7.1: command not found Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ python ./setup.py install running install running build running build_py running install_lib copying build/lib/urllib2_file.py - /Library/Python/2.7/site-packages error: /Library/Python/2.7/site-packages/urllib2_file.py: Permission denied Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Wed, Mar 7, 2012 at 3:01 PM, Ian Kelly ian.g.ke...@gmail.com wrote: There is a fork of setuptools called distribute that supports Python 3. Thanks, I guess I'll give this a try tonight! setup.py is a file that should be included at the top-level of the .tar files you downloaded. Generally, to install something in that manner, you would navigate to that top-level folder and run python setup.py install. If you have multiple Python versions installed and want to install the package for a specific version, then you would use that version of Python to run the setup.py file. The only files included in the .tar.gz file is a .tar file of the same name. So I guess the setup option doesn't exist for these particular packages. I'll try distribute tonight when I have some time to mess with all of this. So much work just to get a 3rd party module installed! -- http://mail.python.org/mailman/listinfo/python-list
Re: Project
On Wed, 07 Mar 2012 13:06:38 -0500, Rodrick Brown wrote: Pay a smart developer! What? For homework? -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Wed, Mar 7, 2012 at 4:11 PM, John Salerno johnj...@gmail.com wrote: On Wed, Mar 7, 2012 at 3:01 PM, Ian Kelly ian.g.ke...@gmail.com wrote: There is a fork of setuptools called distribute that supports Python 3. Thanks, I guess I'll give this a try tonight! setup.py is a file that should be included at the top-level of the .tar files you downloaded. Generally, to install something in that manner, you would navigate to that top-level folder and run python setup.py install. If you have multiple Python versions installed and want to install the package for a specific version, then you would use that version of Python to run the setup.py file. The only files included in the .tar.gz file is a .tar file of the same name. So I guess the setup option doesn't exist for these particular packages. I'll try distribute tonight when I have some time to mess with all of this. So much work just to get a 3rd party module installed! -- It's because your extraction program is weird. Gzip is a compression algorithm that operates on a single file. Tar is an archive format that combines multiple files into a single file. When we say extract the .tar.gz, what we mean is both uncompress the tar file and then extract everything out of that. A lot of programs will do that in one step. If you look inside the tar file, you should find the setup.py. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python site-packages permission denied?
On Wed, Mar 7, 2012 at 1:02 PM, Shane Neeley shane.nee...@gmail.com wrote: What do I need to do to successfully install a package onto python so that I can use it as a module? I have tried in terminal in the correct directory python2.7 ./setup.py install but it says permission denied. Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ python2.7.1 ./setup.py install -bash: python2.7.1: command not found Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ python ./setup.py install running install running build running build_py running install_lib copying build/lib/urllib2_file.py - /Library/Python/2.7/site-packages error: /Library/Python/2.7/site-packages/urllib2_file.py: Permission denied Shanes-MacBook-Pro:seisen-urllib2_file-cf4c4c8 chimpsarehungry$ You generally shouldn't mess with Mac OS X's system copies of Python. Typically, one installs a separate copy using MacPorts, Fink, or whatever, and uses that instead. In any case, you generally need to `sudo` when installing stuff system-wide. Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
RE: What's the best way to write this regular expression?
The only files included in the .tar.gz file is a .tar file of the same name. gz stands for gzip and is a form of compression (like rar/zip ). tar stands for a tape archive. It is basically a box that holds the files. So you need to unzip and then open the box. Normally programs like WinZip / WinRar / 7-zip will do both in one step so you do not need to. Not sure what program you are using... Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
RE: Project
Pay a smart developer! What? For homework? Sure why not? Smart developers could use extra money ;) Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Wed, Mar 7, 2012 at 2:11 PM, John Salerno johnj...@gmail.com wrote: The only files included in the .tar.gz file is a .tar file of the same name. So I guess the setup option doesn't exist for these particular packages. The setup.py file (as well as the other files) would be inside the .tar file. Unlike a Windows zip file, which does both archival and compression, Unix files are typically archived and compressed in two separate steps: tar denotes the archival format, and gz denotes the compression format. Some decompression programs are smart enough to recognize the .tar file and automatically extract it when decompressing. Others require you to decompress the .gz and extract the .tar separately -- it sounds like yours is one of the latter. -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Wed, Mar 7, 2012 at 3:34 PM, Ian Kelly ian.g.ke...@gmail.com wrote: The setup.py file (as well as the other files) would be inside the .tar file. Unlike a Windows zip file, which does both archival and compression, Unix files are typically archived and compressed in two separate steps: tar denotes the archival format, and gz denotes the compression format. Some decompression programs are smart enough to recognize the .tar file and automatically extract it when decompressing. Others require you to decompress the .gz and extract the .tar separately -- it sounds like yours is one of the latter. Ah, I see now. After opening the gz file, there was a tar file inside, and then I just opened that file (I use 7zip for these types) and there was a whole host of stuff inside. I didn't realize the tar file itself was an archive, I thought it was the module! ::blush:: Maybe I don't need to mess with the distribute utility then, if I can just run the setup file. I'll try that first and see what happens. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
John Nagle na...@animats.com writes: The library bug, if any, is that you can't apply unicode(s, errors='replace') to a Unicode string. TypeError(Decoding unicode is not supported) is raised. However unicode(s) will accept Unicode input. I think that's a Python bug. If the latter succeeds as a no-op, the former should also succeed as a no-op. Neither should ever get any errors when ‘s’ is a ‘unicode’ object already. The Python documentation (http://docs.python.org/library/functions.html#unicode;) does not mention this. It is therefore necessary to check the type before calling unicode, or catch the undocumented TypeError exception afterward. Yes, this check should not be necessary; calling the ‘unicode’ constructor with an object that's already an instance of ‘unicode’ should just return the object as-is, IMO. It shouldn't matter that you've specified how decoding errors are to be handled, because in that case no decoding happens anyway. Care to report that bug to URL:http://bugs.python.org/, John? -- \ “Those who write software only for pay should go hurt some | `\ other field.” —Erik Naggum, in _gnu.misc.discuss_ | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Project
Dev Dixit devdixit1...@gmail.com writes: Please, tell me how to develop project on how people intract with social networing sites. Step one: collect data. Step two: ??? Step three: project! -- \ “Try to become not a man of success, but try rather to become a | `\ man of value.” —Albert Einstein | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: RE: What's the best way to write this regular expression?
On 01/-10/-28163 01:59 PM, Prasad, Ramit wrote: gz stands for gzip and is a form of compression (like rar/zip ). tar stands for a tape archive. It is basically a box that holds the files. So you need to unzip and then open the box. Normally programs like WinZip / WinRar / 7-zip will do both in one step so you do not need to. Not sure what program you are using... I'm not sure what 7-zip you're referring to, because I use 7-zip and it's always been a two-step process for me... (Though I can't say I've looked through the preferences dialog for a extract .tar.gz files in one go setting.) Evan -- http://mail.python.org/mailman/listinfo/python-list
BitSet Redis
I play around with redis. Isn't it possible to handle BitSet with
Python as in Java?
BitSet users = BitSet.valueOf(redis.get(key.getBytes()));
all.or(users);
System.out.println(all.cardinality())
I try something with the struct and bitstring libs , but haven't any
success. Even the follow snippet didn't work, beacause
bitset[0] isn't approriate.
bitset = r.get('bytestringFromRedis')
x = {0:b}.format(ord(bitset[0]))
Thanks in advance
Christian
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Re: are int, float, long, double, side-effects of computer engineering?
On Mar 6, 7:25 pm, rusi rustompm...@gmail.com wrote: On Mar 6, 6:11 am, Xah Lee xah...@gmail.com wrote: some additional info i thought is relevant. are int, float, long, double, side-effects of computer engineering? It is a bit naive for computer scientists to club integers and reals as mathematicians do given that for real numbers, even equality is undecidable! Mostly when a system like mathematica talks of real numbers it means computable real numbers which is a subset of mathematical real numbers (and of course a superset of floats) Seehttp://en.wikipedia.org/wiki/Computable_number#Can_computable_numbers... I might add that Mathematica is designed mainly for symbolic computation, whereas IEEE floating point numbers are intended for numerical computation. Those are two very different endeavors. I played with Mathematica a bit several years ago, and I know it can do numerical computation too. I wonder if it resorts to IEEE floating point numbers when it does. -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout.detach() results in ValueError
On 03/07/2012 02:41 PM, Peter Kleiweg wrote: I want to write out some binary data to stdout in Python3. I thought the way to do this was to call detach on sys.stdout. But apparently, you can't. Here is a minimal script: #!/usr/bin/env python3.1 import sys fp = sys.stdout.detach() Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in Same in Python 3.1.4 and Python 3.2.2 So, what do I do if I want to send binary data to stdout? sys.stdout.write( some_binary_data ) Why should you need to do some funny manipulation? If you have some other unstated motivation, better ask a clearer question. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout.detach() results in ValueError
Dave Angel schreef op de 7e dag van de lentemaand van het jaar 2012: On 03/07/2012 02:41 PM, Peter Kleiweg wrote: I want to write out some binary data to stdout in Python3. I thought the way to do this was to call detach on sys.stdout. But apparently, you can't. Here is a minimal script: #!/usr/bin/env python3.1 import sys fp = sys.stdout.detach() Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in Same in Python 3.1.4 and Python 3.2.2 So, what do I do if I want to send binary data to stdout? sys.stdout.write( some_binary_data ) TypeError: must be str, not bytes -- Peter Kleiweg http://pkleiweg.home.xs4all.nl/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
On Thu, 08 Mar 2012 08:48:58 +1100, Ben Finney wrote: John Nagle na...@animats.com writes: The library bug, if any, is that you can't apply unicode(s, errors='replace') to a Unicode string. TypeError(Decoding unicode is not supported) is raised. However unicode(s) will accept Unicode input. I think that's a Python bug. If the latter succeeds as a no-op, the former should also succeed as a no-op. Neither should ever get any errors when ‘s’ is a ‘unicode’ object already. No. The semantics of the unicode function (technically: a type constructor) are well-defined, and there are two distinct behaviours: unicode(obj) is analogous to str(obj), and it attempts to convert obj to a unicode string by calling obj.__unicode__, if it exists, or __str__ if it doesn't. No encoding or decoding is attempted in the event that obj is a unicode instance. unicode(obj, encoding, errors) is explicitly stated in the docs as decoding obj if EITHER of encoding or errors is given, AND that obj must be either an 8-bit string (bytes) or a buffer object. It is true that u''.decode() will succeed, in Python 2, but the fact that unicode objects have a decode method at all is IMO a bug. It has also been corrected in Python 3, where (unicode) str objects no longer have a decode method, and bytes objects no longer have an encode method. The Python documentation (http://docs.python.org/library/functions.html#unicode;) does not mention this. Yes it does. It is is the SECOND sentence, immediately after the summary line: unicode([object[, encoding[, errors]]]) Return the Unicode string version of object using one of the following modes: If encoding and/or errors are given, unicode() will decode the object which can either be an 8-bit string or a character buffer using the codec for encoding. ... Admittedly, it doesn't *explicitly* state that TypeError will be raised, but what other exception kind would you expect when you supply an argument of the wrong type? It is therefore necessary to check the type before calling unicode, or catch the undocumented TypeError exception afterward. Yes, this check should not be necessary; calling the ‘unicode’ constructor with an object that's already an instance of ‘unicode’ should just return the object as-is, IMO. It shouldn't matter that you've specified how decoding errors are to be handled, because in that case no decoding happens anyway. I don't believe that it is the job of unicode() to Do What I Mean, but only to Do What I Say. If I *explicitly* tell unicode() to decode the argument (by specifying either the codec or the error handler or both) then it should not double-guess me and ignore the extra parameters. End-user applications may, with care, try to be smart and DWIM, but library functions should be dumb and should do what they are told. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
On 3/7/2012 6:26 PM, Steven D'Aprano wrote: On Thu, 08 Mar 2012 08:48:58 +1100, Ben Finney wrote: John Naglena...@animats.com writes: The library bug, if any, is that you can't apply unicode(s, errors='replace') to a Unicode string. TypeError(Decoding unicode is not supported) is raised. However unicode(s) will accept Unicode input. I think that's a Python bug. If the latter succeeds as a no-op, the former should also succeed as a no-op. Neither should ever get any errors when ‘s’ is a ‘unicode’ object already. No. The semantics of the unicode function (technically: a type constructor) are well-defined, and there are two distinct behaviours: unicode(obj) is analogous to str(obj), and it attempts to convert obj to a unicode string by calling obj.__unicode__, if it exists, or __str__ if it doesn't. No encoding or decoding is attempted in the event that obj is a unicode instance. unicode(obj, encoding, errors) is explicitly stated in the docs as decoding obj if EITHER of encoding or errors is given, AND that obj must be either an 8-bit string (bytes) or a buffer object. It is true that u''.decode() will succeed, in Python 2, but the fact that unicode objects have a decode method at all is IMO a bug. It has also I believe that is because in Py 2, codecs and .encode/.decode were used for same type recoding like base64, uu coding. That was simplified in Py3 so that 'decoding' is bytes to string and 'encoding' is string to bytes, and base64, etc, are only done in their separate modules and not also duplicated in the codecs machinery. been corrected in Python 3, where (unicode) str objects no longer have a decode method, and bytes objects no longer have an encode method. The Python documentation (http://docs.python.org/library/functions.html#unicode;) does not mention this. Yes it does. It is is the SECOND sentence, immediately after the summary line: unicode([object[, encoding[, errors]]]) Return the Unicode string version of object using one of the following modes: If encoding and/or errors are given, unicode() will decode the object which can either be an 8-bit string or a character buffer using the codec for encoding. ... Admittedly, it doesn't *explicitly* state that TypeError will be raised, but what other exception kind would you expect when you supply an argument of the wrong type? What you have correctly pointed out is that there is no discrepancy between doc and behavior and hence no bug for the purpose of the tracker. Thanks. It is therefore necessary to check the type before calling unicode, or catch the undocumented TypeError exception afterward. Yes, this check should not be necessary; calling the ‘unicode’ constructor with an object that's already an instance of ‘unicode’ should just return the object as-is, IMO. It shouldn't matter that you've specified how decoding errors are to be handled, because in that case no decoding happens anyway. I don't believe that it is the job of unicode() to Do What I Mean, but only to Do What I Say. If I *explicitly* tell unicode() to decode the argument (by specifying either the codec or the error handler or both) then it should not double-guess me and ignore the extra parameters. End-user applications may, with care, try to be smart and DWIM, but library functions should be dumb and should do what they are told. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout.detach() results in ValueError
On 3/7/2012 5:35 PM, Peter Kleiweg wrote: Dave Angel schreef op de 7e dag van de lentemaand van het jaar 2012: On 03/07/2012 02:41 PM, Peter Kleiweg wrote: I want to write out some binary data to stdout in Python3. I thought the way to do this was to call detach on sys.stdout. But apparently, you can't. Here is a minimal script: #!/usr/bin/env python3.1 import sys fp = sys.stdout.detach() Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in Same in Python 3.1.4 and Python 3.2.2 So, what do I do if I want to send binary data to stdout? sys.stdout.write( some_binary_data ) TypeError: must be str, not bytes Right, you can only send binary data to file opened in binary mode. The default sys.stdout is in text mode. I am pretty sure that remains true even if stdout is redirected. (You did not mention your OS.) You would have to open such a file and make sys.stdout point to it. sys.stdout = my_binary_file. But why do that? Just open the file and write to it directly without the above. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: what is best method to set sys.stdout to utf-8?
On 3/7/2012 3:57 PM, Peter Kleiweg wrote:
In Python 3, there seem to be two ways to set sys.stdout to
utf-8 after the script has started:
sys.stdout = codecs.getwriter('utf-8')(sys.stdout.detach())
sys.stdout = io.TextIOWrapper(sys.stdout.detach(), encoding='utf-8')
I guess the second is better. At start-up, type(sys.stdout) is
class '_io.TextIOWrapper', and it's also after using the
second method.
After using the first method, type(sys.stdout) is changed to
class 'encodings.utf_8.StreamWriter'.
Should I always use the second method?
I would. The io module is more recent an partly replaces codecs. The
latter remains for back compatibility and whatever it can do that io cannot.
--
Terry Jan Reedy
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Re: pickle/unpickle class which has changed
On 03/07/2012 09:04 AM, Peter Otten wrote: Gelonida N wrote: If you know in advance that your class will undergo significant changes you may also consider storing more stable data in a file format that can easily be modified, e. g. json. Good point, that's what I'm partially doing. I just wondered whether there were already some kind of pre-existing data migration tools / concepts / helpers like for example south for Django or whether I had to roll my own migration scheme for persistent non DB data. -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout.detach() results in ValueError
On Mar 7, 4:10 pm, Terry Reedy tjre...@udel.edu wrote: On 3/7/2012 5:35 PM, Peter Kleiweg wrote: Dave Angel schreef op de 7e dag van de lentemaand van het jaar 2012: On 03/07/2012 02:41 PM, Peter Kleiweg wrote: I want to write out some binary data to stdout in Python3. I thought the way to do this was to call detach on sys.stdout. But apparently, you can't. Here is a minimal script: #!/usr/bin/env python3.1 import sys fp = sys.stdout.detach() Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in Same in Python 3.1.4 and Python 3.2.2 So, what do I do if I want to send binary data to stdout? sys.stdout.write( some_binary_data ) TypeError: must be str, not bytes Right, you can only send binary data to file opened in binary mode. The default sys.stdout is in text mode. I am pretty sure that remains true even if stdout is redirected. (You did not mention your OS.) You would have to open such a file and make sys.stdout point to it. sys.stdout = my_binary_file. But why do that? Just open the file and write to it directly without the above. -- Terry Jan Reedy Write binary data to sys.stdout.buffer. -Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 3.2 and MS Outlook
On Thursday, 8 March 2012 1:52:48 AM, Greg Lindstrom wrote: Is there documentation showing how to read from a Microsoft Outlook server using Python 3.2. I've done it with 2.x, but can't find anything to help me with 3.2. What problems are you having in 3.2? It should be exactly the same - except, obviously, for the general differences between 2 and 3 (ie, any differences should not be due to needing to talk to Outlook and would exist regardless of the job at hand) Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Decoding unicode is not supported in unusual situation
Steven D'Aprano steve+comp.lang.pyt...@pearwood.info writes: On Thu, 08 Mar 2012 08:48:58 +1100, Ben Finney wrote: I think that's a Python bug. If the latter succeeds as a no-op, the former should also succeed as a no-op. Neither should ever get any errors when ‘s’ is a ‘unicode’ object already. No. The semantics of the unicode function (technically: a type constructor) are well-defined, and there are two distinct behaviours: That is documented, right. Thanks for drawing my attention to it. Yes, this check should not be necessary; calling the ‘unicode’ constructor with an object that's already an instance of ‘unicode’ should just return the object as-is, IMO. It shouldn't matter that you've specified how decoding errors are to be handled, because in that case no decoding happens anyway. I don't believe that it is the job of unicode() to Do What I Mean, but only to Do What I Say. If I *explicitly* tell unicode() to decode the argument (by specifying either the codec or the error handler or both) That's where I disagree. Specifying what to do in the case of decoding errors is *not* explicitly requesting to decode. The decision of whether to decode is up to the object, not the caller. Specifying an error handler *in case* decoding errors happen is not the same as specifying that decoding must happen. In other words: I think specifying an encoding is saying “decode this”, but I don't think the same is true of specifying an error handler. End-user applications may, with care, try to be smart and DWIM, but library functions should be dumb and should do what they are told. Agreed, and I think this is compatible with my position. -- \ “Creativity can be a social contribution, but only in so far as | `\ society is free to use the results.” —Richard M. Stallman | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
PPC Form Filling Jobs
http://internetjobs4u.weebly.com -- http://mail.python.org/mailman/listinfo/python-list
Re: sys.stdout.detach() results in ValueError
Peter Kleiweg pkleiweg at xs4all.nl writes: Not yet using fp in any way, this script gives the following error: Exception ValueError: 'underlying buffer has been detached' in You're probably using print() or some such which tries to write to sys.stdout. It's safest to just write to sys.stdout.buffer rather than using detach. -- http://mail.python.org/mailman/listinfo/python-list
Re: BitSet Redis
On Mar 8, 3:02 am, Christian mining.fa...@googlemail.com wrote:
I play around with redis. Isn't it possible to handle BitSet with
Python as in Java?
BitSet users = BitSet.valueOf(redis.get(key.getBytes()));
all.or(users);
System.out.println(all.cardinality())
I try something with the struct and bitstring libs , but haven't any
success. Even the follow snippet didn't work, beacause
bitset[0] isn't approriate.
bitset = r.get('bytestringFromRedis')
x = {0:b}.format(ord(bitset[0]))
Thanks in advance
Christian
Redis I dont know.
As for bitset, sets in python should give you whatever bitset in java
does
See http://docs.python.org/library/sets.html
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Re: What's the best way to write this regular expression?
On Thu, Mar 8, 2012 at 7:39 AM, John Salerno johnj...@gmail.com wrote: it only seemed to support Python 2.7. I'm using 3.2. Is 2.7 just the minimum version it requires? It didn't say something like 2.7+, so I wasn't sure, and I don't want to start installing a bunch of stuff that will clog up my directories and not even work. Just to clarify: Python 2 and Python 3 are quite different. If something requires Python 2.7, you cannot assume that it will work with Python 3.2; anything that supports both branches will usually list the minimum version of each (eg 2.7 or 3.3). ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Python site-packages permission denied?
In article camzyqrtxy3msmxtivue8apyx2zfag3dqp1un+fqwnaywnoa...@mail.gmail.com, Chris Rebert c...@rebertia.com wrote: You generally shouldn't mess with Mac OS X's system copies of Python. Typically, one installs a separate copy using MacPorts, Fink, or whatever, and uses that instead. I don't understand what you mean by mess with. Certainly one should not attempt alter standard library modules provided with the system Python but adding additional packages is fully supported. Apple conveniently provides a special directory in user-controlled space (/Library/Python) as the default location for Distutils-based installs. They even provide versions of easy_install for the system Pythons. -- Ned Deily, n...@acm.org -- http://mail.python.org/mailman/listinfo/python-list
Help with MultipartPostHandler
Hi Python Google Group! I hope someone could help me and then one day when I am
good I can contribute to the forum as well. Does anyone know what is wrong with
my syntax here as I am trying to submit this form using MultipartPostHandler
that I installed?
import MultipartPostHandler, urllib2
params = { 'Run_Number' : 'NONE', 'MAX_FILE_SIZE' : '200', 'submitForm' :
'Submit' }
opener.open(http://consurf.tau.ac.il/index_full_form_PROT.php;, params)
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Re: Biologist new to cgi in python
Shane Neeley shane.nee...@gmail.com wrote: Here is the function I am using to insert the variable file text inside the url. Is it even possible to include the upload command in the url? No. You are trying to simulate a GET request, but files can only be uploaded via a POST request of type multiport/form-data. There is a module called poster that can do the appropriate encoding for you: http://stackoverflow.com/questions/680305/using-multipartposthandler-to-post-form-data-with-python -- Tim Roberts, t...@probo.com Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: what is best method to set sys.stdout to utf-8?
I would. The io module is more recent an partly replaces codecs. The latter remains for back compatibility and whatever it can do that io cannot. I've a naive question : what is wrong with the following system ? class MyStdOut(object): def __init__(self): self.old_stdout=sys.stdout def write(self,x): try: if isinstance(x,unicode): x=x.encode(utf8) except (UnicodeEncodeError,UnicodeDecodeError): sys.stderr.write(This should not happen !) raise self.old_stdout.write(x) sys.stdout=MyStdOut() ... well ... a part of the fact that it is much longer ? Laurent Claessens -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Mar 7, 11:03 pm, Chris Angelico ros...@gmail.com wrote: On Thu, Mar 8, 2012 at 7:39 AM, John Salerno johnj...@gmail.com wrote: it only seemed to support Python 2.7. I'm using 3.2. Is 2.7 just the minimum version it requires? It didn't say something like 2.7+, so I wasn't sure, and I don't want to start installing a bunch of stuff that will clog up my directories and not even work. Just to clarify: Python 2 and Python 3 are quite different. If something requires Python 2.7, you cannot assume that it will work with Python 3.2; anything that supports both branches will usually list the minimum version of each (eg 2.7 or 3.3). ChrisA That's why I asked first, because I got the feeling it did NOT support Python 3 :) -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the best way to write this regular expression?
On Mar 7, 4:02 pm, Evan Driscoll drisc...@cs.wisc.edu wrote: On 01/-10/-28163 01:59 PM, Prasad, Ramit wrote: gz stands for gzip and is a form of compression (like rar/zip ). tar stands for a tape archive. It is basically a box that holds the files. So you need to unzip and then open the box. Normally programs like WinZip / WinRar / 7-zip will do both in one step so you do not need to. Not sure what program you are using... I'm not sure what 7-zip you're referring to, because I use 7-zip and it's always been a two-step process for me... (Though I can't say I've looked through the preferences dialog for a extract .tar.gz files in one go setting.) Evan Same here, because that's what I used. I looked through the settings but didn't see anything. What seems to happen is that 7-Zip recognizes the .gz extension and opens that automatically. But then that simply opens up another window with the .tar file in it, which you have to then open again. -- http://mail.python.org/mailman/listinfo/python-list
[issue14216] ImportError: No module named binascii
Martin v. Löwis mar...@v.loewis.de added the comment: You probably did something wrong when installing Python. How exactly did you get it into ~/PythonInstall? -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13897] Move fields relevant to sys.exc_info out of frame into generator/threadstate
Mark Shannon m...@hotpy.org added the comment: Jim Jewett wrote: http://bugs.python.org/review/13897/diff/4186/14521 File Python/sysmodule.c (right): http://bugs.python.org/review/13897/diff/4186/14521#newcode211 Python/sysmodule.c:211: while ((exc_info-exc_type == NULL || exc_info-exc_type == Py_None) This while loop is new, but it isn't clear how it is related to encapsulating the exception state. Is this fixing an unrelated bug, or is it from generators, or ..? http://bugs.python.org/review/13897/show Running generators form a stack, much like frames. Calling a generator with next or send, pushes it onto the stack, yielding pops it. Now consider, if you will, the threadstate object as a sort of non-yielding (it cannot be popped) generator which forms the base of this stack. In this patch, rather than swapping the exception state between generator-owned frame and threadstate whenever entering or leaving a generator, each generator (and the threadstate) has its own exception state. It order to find the topmost exception state, sys.exc_info searches the stack of generators until it finds one. In practice the generator stack will be very shallow, only 1 or 2 deep, as it is rare to have generators calling other generators (although this will become a bit more common with PEP 380). -- title: Move fields relevant to sys.exc_info out of frame into generator/threadstate - Move fields relevant to sys.exc_info out of frame into generator/threadstate ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13897 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7652] Merge C version of decimal into py3k.
Case Van Horsen cas...@gmail.com added the comment: I've found some differences between decimal and cdecimal. cdecimal 2.3 does not support the __ceil__ and __floor__ methods that exist in decimal. math.ceil converts a cdecimal.Decimal instance into a float before finding the ceiling. This can generate incorrect results. import decimal import math math.ceil(decimal.Decimal(12345678901234567890.1)) 12345678901234567168 The decimal module in previous versions returns the correct answer 12345678901234567891 cdecimal.Decimal instances do not emulate the various single-underscore methods of a decimal.Decimal instance. In gmpy2, I use _int, _exp, _sign, and _is_special to convert a decimal.Decimal into an exact fraction. I realize the issue is with gmpy2 and I will fix gmpy2, but there may be other code that uses those methods. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7652 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14216] ImportError: No module named binascii
Qian Liu liuq0...@e.ntu.edu.sg added the comment: Dear Martin, Thanks for your reply. I went to the folder of python after tar -zxvf Python-2.7.2.tgz and do the following operations: ./configure --prefix=~/PythonInstall make make install where ~ represent the path in my computer and it is long in the report; so, I replaced it by ~. Then, I put ~/PythonInstallbin and ~/PythonInstall/lib/python2.7/site-packages into PATH and PYTHONPATH. Anything wrong here? Thanks for your help. Best regards, Qian Liu On Wed, Mar 7, 2012 at 4:23 PM, Martin v. Löwis rep...@bugs.python.orgwrote: Martin v. Löwis mar...@v.loewis.de added the comment: You probably did something wrong when installing Python. How exactly did you get it into ~/PythonInstall? -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue992389] attribute error due to circular import
Changes by Eric Snow ericsnowcurren...@gmail.com: -- nosy: +eric.snow ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue992389 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14218] include rendered output in addition to markup
New submission from Tshepang Lekhonkhobe tshep...@gmail.com: For devguide/documenting, If you show me markup, also show me what output it gives me. It's kinda tedious to keep building the markup just to verify how it's rendered. -- components: Devguide messages: 155061 nosy: ezio.melotti, tshepang priority: normal severity: normal status: open title: include rendered output in addition to markup type: enhancement versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14218 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14191] argparse: nargs='*' doesn't get out-of-order positional parameters
Steven Bethard steven.beth...@gmail.com added the comment: optparse, which argparse attempts to replace, permitted positional arguments to be intermixed with optional arguments Sure, but optparse didn't actually parse positional arguments - it just threw them into a bag, and then you had to group them and convert them however you wanted afterwards. Argparse, instead, was designed to let you specify the groups of positional arguments. Your situation is a little different because you just want to throw all the positional arguments into a bag again. Not that there's anything wrong with that - it's just not the primary use case argparse had in mind. The only definition of positional parameters I could find... Yeah, it looks like there's no good documentation on positional vs. optional parameters. Somewhere obvious, perhaps right at the beginning of the add_argument() documentation, there should probably be something like: Argparse groups the command line argument strings into two types of groups: optional arguments, which are a sequence of command line strings that begin with a flag like -v or --verbose, and positional arguments, which are a sequence of command line strings that do not begin with a flag. The add_argument() method allows you to specify how many command line strings each of your optional or positional arguments should consume, how those strings should be converted into Python objects, etc. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14191 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14216] ImportError: No module named binascii
Martin v. Löwis mar...@v.loewis.de added the comment: There are some minor errors indeed: the syntax for PATH and PYTHONPATH is wrong (don't use quotes () in the middle of the value). Also, putting site-packages into PYTHONPATH should not be necessary. I think the main cause might be the incorrect --prefix argument. Don't use ~/PythonInstall, but $HOME/PythonInstall. Also, when I try this, I get configure: error: expected an absolute directory name for --prefix: ~/PythonInstall so you must have made something different (or you have used a shell different from bash), else you would have gotten the same error. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14216] ImportError: No module named binascii
Qian Liu liuq0...@e.ntu.edu.sg added the comment: Dear Martin, Many thanks for your help and your reply. I will correct the errors and let you know the result. best regards, Qian Liu On Wed, Mar 7, 2012 at 5:07 PM, Martin v. Löwis rep...@bugs.python.orgwrote: Martin v. Löwis mar...@v.loewis.de added the comment: There are some minor errors indeed: the syntax for PATH and PYTHONPATH is wrong (don't use quotes () in the middle of the value). Also, putting site-packages into PYTHONPATH should not be necessary. I think the main cause might be the incorrect --prefix argument. Don't use ~/PythonInstall, but $HOME/PythonInstall. Also, when I try this, I get configure: error: expected an absolute directory name for --prefix: ~/PythonInstall so you must have made something different (or you have used a shell different from bash), else you would have gotten the same error. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14219] start the Class tutorial in a more gentle manner
New submission from Tshepang Lekhonkhobe tshep...@gmail.com: Looking at Doc/tutorial/classes, the section Python Scopes and Namespaces is full of heavy/deep information. I expect that people who would be able to properly digest that info are people who are already advanced at Python, and therefore maybe it should be moved to some cookbook (or language reference). I would prefer something gentler, since the tutorial is for Python newbies who aren't necessarily conversant with OO concepts. There can of course be links to heavier material for deeper understanding. -- assignee: docs@python components: Documentation messages: 155065 nosy: docs@python, tshepang priority: normal severity: normal status: open title: start the Class tutorial in a more gentle manner type: enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14219 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14219] start the Class tutorial in a more gentle manner
Changes by Tshepang Lekhonkhobe tshep...@gmail.com: -- versions: +Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14219 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14216] ImportError: No module named binascii
Qian Liu liuq0...@e.ntu.edu.sg added the comment: Dear Martin, I did the following operations ./configure --prefix= /img01/home/liuqian1/PLAprediction/software/PythonInstall make make install and then MPYTHONHOME=/img01/home/liuqian1/PLAprediction/software/PythonInstall PATH=$MPYTHONHOME/bin:$PATH However, when I try ' python -c import binascii; ', *I still got the same error.* By the way, I can run ' python -c import binascii; ' on Window XP and in python 2.5.5. Our technician also installed python 3.0 in our Linux server without the 'prefex' in the ./configure but we got the same error also. Any more comments about this? Thanks for your help in advance. Best regards, Qian Liu On Wed, Mar 7, 2012 at 5:12 PM, Qian Liu rep...@bugs.python.org wrote: Qian Liu liuq0...@e.ntu.edu.sg added the comment: Dear Martin, Many thanks for your help and your reply. I will correct the errors and let you know the result. best regards, Qian Liu On Wed, Mar 7, 2012 at 5:07 PM, Martin v. Löwis rep...@bugs.python.org wrote: Martin v. Löwis mar...@v.loewis.de added the comment: There are some minor errors indeed: the syntax for PATH and PYTHONPATH is wrong (don't use quotes () in the middle of the value). Also, putting site-packages into PYTHONPATH should not be necessary. I think the main cause might be the incorrect --prefix argument. Don't use ~/PythonInstall, but $HOME/PythonInstall. Also, when I try this, I get configure: error: expected an absolute directory name for --prefix: ~/PythonInstall so you must have made something different (or you have used a shell different from bash), else you would have gotten the same error. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14216 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14218] include rendered output in addition to markup
Sandro Tosi sandro.t...@gmail.com added the comment: 3.1 and 2.6 as in security fix only: please don't add those versions for non-sec issue -- nosy: +sandro.tosi versions: -Python 2.6, Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14218 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14218] include rendered output in addition to markup
Sandro Tosi sandro.t...@gmail.com added the comment: additionally, devguide has no version associated with it. -- versions: -Python 2.7, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14218 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14219] start the Class tutorial in a more gentle manner
Sandro Tosi sandro.t...@gmail.com added the comment: see msg155067 -- nosy: +sandro.tosi versions: -Python 2.6, Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14219 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7652] Merge C version of decimal into py3k.
Stefan Krah stefan-use...@bytereef.org added the comment: Jim Jewett rep...@bugs.python.org wrote: Whether you need *additional* subdirectories within _cdecimal to subcategorize the .c and .h files, I'm not sure -- because I didn't get in deep enough to know what they should be. If the categorization let people focus on the core, that would be helpful, but it wasn't clear to me which files were part of the exported API and which were implementation details. Are there are clear distinctions (type info/python bindings/basic arithmetic/advanced algorithms/internal-use-only/???) OK, as a basis for discussion I've added: http://hg.python.org/features/cdecimal/file/8b75c2825508/Modules/_decimal/FILEMAP.txt I didn't mention the main reason why _decimal.c and libmpdec are in a flat directory: Building the library first and then the module from the library led to problems on at least Windows and AIX. That's why I started to treat all libmpdec files as part of the module, list them as dependencies in setup.py and let distutils figure everything out. Distutils also can figure out automatically if a Mac OS build happens to be a universal build and things like that. The build process is very well tested by now and it took quite a while to figure everything out, so I'd be reluctant to change the flat hierarchy. ??python/ ?? ?? ??- ??extended module tests I would really expect that to still be under tests, and I would expect a directory called python to contain code written in python, or at least python bindings. Could you explain? The python/ directory contains deccheck.py, formathelper.py etc. Would it at least be OK to wrap them in stubs for exporting, so that the test logic could be places with the others tests? (I worry that some tests may stop getting run if someone else modifies the build process and doesn't notice the unusual location.) tests/runtest.c won't compile then. I'll look into the stub and also the _testhelp suggestions. Infinity, InFinItY, iNF are all allowed by the specification. OK; so is io.c part of the library, or part of the python binding? I see a potential source of confusion: io.c is firmly part of the library. All PEP 3101 formatting is part of libmpdec, because I like the mini language. io.c only understands ASCII and UTF-8 fill characters. It is the *library* tests that would fail under the Turkish locale (if not for _mpd_strneq). Good enough, though I would rather see that as a comment near the assembly. Comments how to enforce an ANSI build (much slower!) are in LIBTEST.txt and now also in FILEMAP.txt. I'm not worried about the header files. I am worried about what is exposed to python, but just documenting it (docstrings and the module .rst) may be OK. But I'm also worried that there may be fair amounts of code that are effectively dead after the remove any names not in decimal.py importing trick. If so, I would at least like that in some sort of #ifdef, so that people don't spend too much time trying to make sense of it. It's the opposite: names from decimal.py starting with an underscore that are not in _decimal are removed. If I don't use that trick, I end up with about 50 additional symbols from decimal.py: import decimal # the C version dir(decimal) ... '_ContextManager', '_Infinity', '_Log10Memoize', ... -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7652 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7652] Merge C version of decimal into py3k.
Marc-Andre Lemburg m...@egenix.com added the comment: Does the C version have a C API importable as capsule ? If not, could you add one and a decimal.h to go with it ? This makes integration in 3rd party modules a lot easier. Thanks, -- Marc-Andre Lemburg eGenix.com 2012-02-13: Released eGenix pyOpenSSL 0.13http://egenix.com/go26 2012-02-09: Released mxODBC.Zope.DA 2.0.2 http://egenix.com/go25 ::: Try our new mxODBC.Connect Python Database Interface for free ! eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ -- nosy: +lemburg ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7652 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14220] yield from kills generator on re-entry
New submission from Stefan Behnel sco...@users.sourceforge.net: Based on the existing test_attempted_yield_from_loop in Lib/test/test_pep380.py, I wrote this test and I wonder why it does not work: def test_attempted_reentry(): for line in test_attempted_reentry(): print(line) g1: starting Yielded: y1 g1: about to yield from g2 g2: starting Yielded: y2 g2: about to yield from g1 g2: caught ValueError Yielded: y3 g1: after delegating to g2 Yielded: y4 trace = [] def g1(): trace.append(g1: starting) yield y1 trace.append(g1: about to yield from g2) yield from g2() trace.append(g1: after delegating to g2) yield y4 def g2(): trace.append(g2: starting) yield y2 trace.append(g2: about to yield from g1) try: yield from gi except ValueError: trace.append(g2: caught ValueError) else: trace.append(g1 did not raise ValueError on reentry) yield y3 gi = g1() for y in gi: trace.append(Yielded: %s % (y,)) return trace In current CPython, I get this: Failed example: for line in test_attempted_reentry(): print(line) Expected: g1: starting Yielded: y1 g1: about to yield from g2 g2: starting Yielded: y2 g2: about to yield from g1 g2: caught ValueError Yielded: y3 g1: after delegating to g2 Yielded: y4 Got: g1: starting Yielded: y1 g1: about to yield from g2 g2: starting Yielded: y2 g2: about to yield from g1 g2: caught ValueError Yielded: y3 Even though I catch the ValueError (raised on generator reentry) at the position where I run the yield from, the outer generator (g1) does not continue to run after the termination of g2. It shouldn't normally have an impact on the running g1 that someone attempts to jump back into it, but it clearly does here. I noticed this while trying to adapt the implementation for Cython, because the original test was one of the few failing cases and it made the code jump through the generator support code quite wildly. -- components: Interpreter Core messages: 155072 nosy: scoder priority: normal severity: normal status: open title: yield from kills generator on re-entry type: behavior versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14220 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14208] No way to recover original argv with python -m
Nick Coghlan ncogh...@gmail.com added the comment: In framing a question for Raymond regarding his preference for avoiding the __argv__ name, I realised I agreed with him. My reasoning is that, when a Python process starts, sys.stdin is sys.__stdin__, sys.stdout is sys.__stdout__ and sys.stderr is sys.__stderr__. The dunder versions capture the original values as created by the interpreter initialisation, not the raw OS level file descriptors. The new attribute proposed here is different - it's not an immutable copy of the original value of sys.argv, it's a *different* sequence altogether. The analogy with the standard stream initial value capture created by the use of sys.__argv__ would actually be misleading rather than helpful. For the same reason, Raymond's specific argv_original suggestion doesn't really work for me. Alas, I can think of several other possible colours for that particular bikeshed (such as argv_os, argv_main, argv_raw, argv_platform, argv_executable) without having any particular good way of choosing between them. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14208 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11379] Remove lightweight from minidom description
Éric Araujo mer...@netwok.org added the comment: FYI, note that http://wiki.python.org/moin/MiniDom says this about minidom: “slow and very memory hungry DOM implementation”. As you have seen, I have applied my ToC order change. Now in order to commit my s/lightweight/minimal/ change and close this report, can you Eli say if minidom-desc-2 is okay (I’m asking you because this patch touches text you just added, contrary to minidom-desc)? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11379 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14202] The docs of xml.dom.pulldom are almost nonexistent
Éric Araujo mer...@netwok.org added the comment: Merged Florian’s version with the original file to create a patch. -- Added file: http://bugs.python.org/file24752/pulldom-documentation.rst ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14202 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14218] include rendered output in addition to markup
Tshepang Lekhonkhobe tshep...@gmail.com added the comment: Sandro Tosi sandro.t...@gmail.com added the comment: 3.1 and 2.6 as in security fix only: please don't add those versions for non-sec issue Sorry, I thought there was an exception for documentation issues. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14218 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11379] Remove lightweight from minidom description
Martin v. Löwis mar...@v.loewis.de added the comment: FYI, note that http://wiki.python.org/moin/MiniDom says this about minidom: “slow and very memory hungry DOM implementation”. Thanks for the notice; I have now fixed that wording. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11379 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11379] Remove lightweight from minidom description
Eli Bendersky eli...@gmail.com added the comment: Éric, I'm ok with replacing lightweight by minimal, unless others have objections. Regarding the specifics of the minidom-desc-2.diff patch: proficient with the DOM I'm not sure the DOM is semantically correct. the W3C-DOM interface is more precise. Also, I still think that a note would be more appropriate, but I don't care enough to argue about it :) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11379 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
