Re: changes on windows registry doesn’t take effect immediately
On Thu, 14 Mar 2013 22:26:50 -0700, iMath wrote: changes on windows registry doesn’t take effect immediately I am trying to change IE’s proxy settings by the following 2 code snippets [...] but the changes on windows registry doesn’t take effect immediately,so is there some way to change the windows registry and let the changes take effect immediately without restarting IE ? That's an IE question, not a Python question. You might be lucky and have somebody here happen to know the answer, but you'll probably have more luck asking on a group dedicated to Windows and IE. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: changes on windows registry doesn�t take effect immediately
iMath redstone-c...@163.com wrote: changes on windows registry doesnt take effect immediately Well, that's not exactly the issue. The registry is being changed immediately. The issue is that IE doesn't check for proxy settings continuously. but the changes on windows registry doesnt take effect immediately, so is there some way to change the windows registry and let the changes take effect immediately without restarting IE ? No. This is an IE issue, not a registry issue. Other browsers might behave differently. -- Tim Roberts, t...@probo.com Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
On Fri, Mar 15, 2013 at 12:07 PM, alex23 wuwe...@gmail.com wrote: On Mar 15, 8:24 am, Rick Johnson rantingrickjohn...@gmail.com wrote: Hmm, well before i can even start solving your problem, i'll need to spend some time figuring out what the hell you're problem is. o_O. Maybe you meant to say this: how to [copy] all the [canvas items] in [one] canvas [into another] canvas? Ahhh, the sweet nectar of articulate communication! Mocking people for whom English is obviously not their first language just makes you look petty and racist. Yes, but there is legitimate criticism for a post that clearly hasn't had much work put into it. I'm not 100% convinced that English isn't the OP's first language (it seems plausible, even likely, but far from certain), but I'm confident that the OP did not spend a few minutes polishing the post before hitting Send (or Expedier, or Versenden, or whatever the button says). Now, that doesn't mean it's polite or useful to *mock* the person for it, but it is at least a legit complaint. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Python SUDS issue
Able to fix issue by including 'location' as parameter in client
constructor arguments.
client = Client(url=wsdlurl,doctor=schemadoctor, location='
https://46.51.221.138/PBExternalServices/v1/soap?wsdl')
Thanks for helping me out.
Regards,
VGNU
On Thu, Mar 7, 2013 at 10:07 AM, VGNU Linux vgnuli...@gmail.com wrote:
Hi Guys,
Not aware what import here is and what it will do.
But going through some google search result page found that there is
something called doctor in suds.
so tried changing code and it did fix the issue.
suds.TypeNotFound: Type not found: '(GetAccountBalanceFaultResponse,
http://www.payback.net/lmsglobal/xsd/v1/types, )'
Here is what i changed.
from suds.client import Client
from suds.xsd.doctor import Import, ImportDoctor
from suds.sax.element import Element
wsdlurl = 'https://46.51.221.138/PBExternalServices/v1/soap?wsdl'
schemaurl = 'http://www.payback.net/lmsglobal/xsd/v1/types'
schemaimport = Import(schemaurl)
schemadoctor = ImportDoctor(schemaimport)
client = Client(url=wsdlurl,doctor=schemadoctor)
print client
Printing client now lists all the methods and types associated with the
service.
But again stuck as on executing a method
response = client.service.GetAccountBalance(authtype)
replies with the error.
ValueError: unknown url type: {endpoint address}
Totally confused as what is wrong going on here.
Appreciate your help.
Regards,
VGNU
On Tue, Mar 5, 2013 at 12:46 PM, dieter die...@handshake.de wrote:
VGNU Linux vgnuli...@gmail.com writes:
...
Here is my code:
from suds.client import Client
wsdlurl = 'https://46.51.221.138/PBExternalServices/v1/soap?wsdl'
client = Client(wsdlurl)
print client
And following is the error that occurs on trying to print client.
Traceback (most recent call last):
...
dereference
midx, deps = x.dependencies()
File C:\Python25\Lib\site-packages\suds\xsd\sxbasic.py, line 469, in
dependencies
raise TypeNotFound(self.ref)
suds.TypeNotFound: Type not found: '(GetAccountBalanceFaultResponse,
http://www.payback.net/lmsglobal/xsd/v1/types, )'
Looks like a bug in the WSDL description of the web service.
It seems to reference a type GetAccountBalanceFaultResponse
associated with the namespace
http://www.payback.net/lmsglobal/xsd/v1/types;,
but suds cannot find the type.
Maybe an import is missing in the WSDL description.
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Unicode
I thought I understand unicode (somewhat, at least), but this seems not to be the case. I expected the following code to print 'µm' two times to the console: code # -*- coding: cp850 -*- a = uµm b = u\u03bcm print(a) print(b) /code But what I get is this: output µm Traceback (most recent call last): File x.py, line 7, in module print(b) File C:\Python33-64\lib\encodings\cp850.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u03bc' in position 0: character maps to undefined /output Using (german) windows, command prompt, codepage 850. The same happens with Python 2.7. What am I doing wrong? Thanks, Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode
On Fri, 15 Mar 2013 11:46:36 +0100, Thomas Heller wrote: I thought I understand unicode (somewhat, at least), but this seems not to be the case. I expected the following code to print 'µm' two times to the console: code # -*- coding: cp850 -*- a = uµm b = u\u03bcm print(a) print(b) /code But what I get is this: output µm Traceback (most recent call last): File x.py, line 7, in module print(b) File C:\Python33-64\lib\encodings\cp850.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u03bc' in position 0: character maps to undefined /output Using (german) windows, command prompt, codepage 850. The same happens with Python 2.7. What am I doing wrong? That's because the two strings are not the same. You can isolate the error by noting that the second one only raises an exception when you try to print it. That suggests that the problem is that it contains a character which is not defined in your terminal's codepage. So let's inspect the strings more carefully: py a = uµm py b = u\u03bcm py a == b False py ord(a[0]), ord(b[0]) (181, 956) py import unicodedata py unicodedata.name(a[0]) 'MICRO SIGN' py unicodedata.name(b[0]) 'GREEK SMALL LETTER MU' Does codepage 850 include Greek Small Letter Mu? The evidence suggests it does not. If you can, you should set the terminal's encoding to UTF-8. That will avoid this sort of problem. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode
Thomas Heller thel...@ctypes.org wrote: output æm Traceback (most recent call last): File x.py, line 7, in module print(b) File C:\Python33-64\lib\encodings\cp850.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u03bc' in position 0: character maps to undefined /output Using (german) windows, command prompt, codepage 850. The same happens with Python 2.7. What am I doing wrong? They are different characters: repr(a) u'\\xb5m' repr(b) u'\\u03bcm' a contains unicode MICRO SIGN, b contains GREEK SMALL LETTER MU -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Im fetching data from excel using python code.. i could see some junk value also with it.
Hi im fetching data from excel using python code.. i could see some junk value
also with it. like [text:u
How to remove it.. below is the code
code
from xlrd import open_workbook
from win32com.client import Dispatch
book = open_workbook('C:/Users/742123/Desktop/test.xls')
sheet0 = book.sheet_by_index(0)
#sheet1 = book.sheet_by_index(1)
print sheet0.col(0)
print sheet0.col(2)
print sheet0.col(3)
print sheet0.col(4)
print sheet0.col(5)
print sheet0.col(6)
print sheet0.col(7)
print sheet0.col(8)
print sheet0.col(9)
print sheet0.col(10)
print sheet0.col(12)
print sheet0.col(13)
print sheet0.col(14)
print sheet0.col(15)
print sheet0.col(16)
print sheet0.col(17)
print sheet0.col(18)
print sheet0.col(19)
print sheet0.col(20)
print sheet0.col(21)
print sheet0.col(22)
print sheet0.col(23)
print sheet0.col(24)
print sheet0.col(25)
print sheet0.col(26)
print sheet0.col(27)
/code
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Re: Unicode
Am 15.03.2013 11:58, schrieb Steven D'Aprano: On Fri, 15 Mar 2013 11:46:36 +0100, Thomas Heller wrote: [Windows: Problems with unicode output to console] You can isolate the error by noting that the second one only raises an exception when you try to print it. That suggests that the problem is that it contains a character which is not defined in your terminal's codepage. So let's inspect the strings more carefully: py a = uµm py b = u\u03bcm py a == b False py ord(a[0]), ord(b[0]) (181, 956) py import unicodedata py unicodedata.name(a[0]) 'MICRO SIGN' py unicodedata.name(b[0]) 'GREEK SMALL LETTER MU' Does codepage 850 include Greek Small Letter Mu? The evidence suggests it does not. If you can, you should set the terminal's encoding to UTF-8. That will avoid this sort of problem. Thanks for the clarification. For the archives: Setting the console codepage to 65001 and the font to lucida console helps. Thomas -- http://mail.python.org/mailman/listinfo/python-list
wxgrid - is there an easy way to set alignment of a column?
I'm using wxGrid and finding it fairly straightforward but I can't see an easy way to set the alignment (left, centre, right) for a whole column. There's SetDefaultCellAlignment() which sets the default for the whole grid and there's SetCellAlignment() which sets it for a specific cell but there seems to be no way to set the default alignment for a column. Am I missing something or do I need to do it for individual cells as I load the data? -- Chris Green -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
i maybe don't talk english very well but at least i am not a Rude,and you are not obligated to answering me much less Mocking me ,i assure you that i will not post anything anymore jackass thank you alex23 -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
olsr.ka...@gmail.com, 15.03.2013 13:00: i maybe don't talk english very well but at least i am not a Rude,and you are not obligated to answering me much less Mocking me ,i assure you that i will not post anything anymore jackass thank you alex23 As Chris pointed out, the real problem was that you were not clear at all in your post about what your problem was. If you had taken a bit more time explaining it, maybe even showing a bit of code that makes it clear what you tried and what did not work about it, you would have made it much clearer that you are a person worth responding to. Basically, the question is, if you do not care enough yourself to pose an understandable question (and I mean the actual content, regardless of any language comprehension deficiencies etc.), why do you think we should care enough about it to try to understand it and even answer it? This might help you in asking better questions next time: http://catb.org/~esr/faqs/smart-questions.html Note that there is also a list of translations, a couple of which might be easier to read for you: http://catb.org/~esr/faqs/smart-questions.html#translations Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the easiest Python datagrid GUI (preferably with easy database hooks as well)?
Am 14.03.2013 14:24, schrieb Wolfgang Keller: This is becoming an FAQ. The currently available (non-web) database application development frameworks for Python are: using wxPython: Dabohttp://www.dabodev.com Defis http://sourceforge.net/projects/defis/ (Russian only) GNUehttp://www.gnuenterprise.org/ using PyQt: Pypapi https://pypi.python.org/pypi/PyPaPi Camelot http://www.python-camelot.com/ Qtalchemy http://www.qtalchemy.org/ Thyme http://clocksoft.co.uk/downloads/ Kexihttp://www.kexi-project.org/ using PyGTK: SQLkit http://sqlkit.argolinux.org/ Kiwihttp://www.async.com.br/projects/kiwi/ Glomhttp://www.glom.org Openoffice Base http://www.openoffice.org/product/base.html Libreoffice Base http://www.libreoffice.org/features/base/ OpenERP http://www.openerp.org Tryton http://www.tryton.org Dabo (they're about to release 1.0 for Pycon), Pypapi, Camelot, SQLkit seem to be the most actively developed and best documented ones. Very helpful collection, only one open question: which of them work with Python 3? Not Dabo, sadly, because wxPython doesn't. And not Camelot when I last looked (some weeks ago, though). Will look at Pypapi and SQLkit. Sibylle -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
On 03/15/2013 08:00 AM, olsr.ka...@gmail.com wrote: i maybe don't talk english very well but at least i am not a Rude,and you are not obligated to answering me much less Mocking me ,i assure you that i will not post anything anymore jackass thank you alex23 Note also that you were insulted by a noted troll generator here (notice his pseudo-name, Ranting Rick), one that many of us have kill-filed to avoid reading his posts. Most newcomers to mailing lists will omit some details in their queries, and we try to help fill in the details. Sometimes what might help if you think you might be misunderstood is to pose the query in more than one way, or give some example code, or something so we can fill in the missing or misunderstood pieces. Start by specifying the environment you're using (python version, operating system, any 3rd party libraries). Then include enough code that we know exactly what you mean by canvas. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
OpenOpt Suite release 0.45
Hi all, I'm glad to inform you about new OpenOpt Suite release 0.45 (2013-March-15): * Essential improvements for FuncDesigner interval analysis (thus affect solver interalg) * Temporary walkaround for a serious bug in FuncDesigner automatic differentiation kernel due to a bug in some versions of Python or NumPy, may affect optimization problems, including (MI)LP, (MI)NLP, TSP etc * Some other minor bugfixes and improvements --- Regards, D. http://openopt.org/Dmitrey -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
I dont usually bother about spelling/grammar etc. And I think it silly to do so on a python list. However with this question: On Mar 14, 5:16 pm, olsr.ka...@gmail.com wrote: how to couper all the obejcts in a canvas in an auther canvas? obejcts is clearly objects and auther is probably other But what the *^* is couper? I first thought it was couple It could be copy as Rick understood By some stretch it could even be cope So yes grammar/spellings etc dont matter... as long as we are within the bounds of comprehension! -- http://mail.python.org/mailman/listinfo/python-list
Re: OpenOpt Suite release 0.45
dmitre...@gmail.com, 15.03.2013 14:36: I'm glad to inform you about new OpenOpt Suite release 0.45 (2013-March-15): * Essential improvements for FuncDesigner interval analysis (thus affect solver interalg) * Temporary walkaround for a serious bug in FuncDesigner automatic differentiation kernel due to a bug in some versions of Python or NumPy, may affect optimization problems, including (MI)LP, (MI)NLP, TSP etc * Some other minor bugfixes and improvements Hi, two comments: 1) You might want to send announcements to the dedicated python-announce mailing list instead of the general Python mailing list. 2) When you send a software release announcement to a mailing list with an audience as broad as python-list or python-announce, don't expect others to already know what you are talking about. It's a good idea (and a nice touch) to add a short and generally understandable (i.e. using no special purpose terminology) paragraph to your announcement that tells readers what the software does and why it would be interesting for them. Usually, that substantially increases the impact of your announcement, because most people will just ignore release announcements that they do not immediately understand, assuming (correctly or incorrectly) that the software is not meant to be used by them. Stefan -- http://mail.python.org/mailman/listinfo/python-list
About Starting PYTHON
Hi, I am new to this and wanted to know how to start python? Which book,website, blog, etc. -- http://mail.python.org/mailman/listinfo/python-list
Re: About Starting PYTHON
On Mar 15, 7:10 pm, SHIVDHWAJ PANDEY shivdh...@gmail.com wrote: Hi, I am new to this and wanted to know how to start python? Which book,website, blog, etc. http://docs.python.org/2/tutorial/ -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
- Original Message - I dont usually bother about spelling/grammar etc. And I think it silly to do so on a python list. However with this question: On Mar 14, 5:16 pm, olsr.ka...@gmail.com wrote: how to couper all the obejcts in a canvas in an auther canvas? obejcts is clearly objects and auther is probably other But what the *^* is couper? I first thought it was couple It could be copy as Rick understood By some stretch it could even be cope So yes grammar/spellings etc dont matter... as long as we are within the bounds of comprehension! couper is probably a french word, I've seen some of the OP's threads written in french. It means cut. He probably wants to cut some objects in a canvas and paste them in another. JM -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
On Sat, Mar 16, 2013 at 1:52 AM, Jean-Michel Pichavant jeanmic...@sequans.com wrote: - Original Message - I dont usually bother about spelling/grammar etc. And I think it silly to do so on a python list. However with this question: On Mar 14, 5:16 pm, olsr.ka...@gmail.com wrote: how to couper all the obejcts in a canvas in an auther canvas? obejcts is clearly objects and auther is probably other But what the *^* is couper? I first thought it was couple It could be copy as Rick understood By some stretch it could even be cope So yes grammar/spellings etc dont matter... as long as we are within the bounds of comprehension! couper is probably a french word, I've seen some of the OP's threads written in french. It means cut. He probably wants to cut some objects in a canvas and paste them in another. Ah. Not having any real comprehension of French, I was thinking along the lines of copy, which thus wouldn't be very far wrong. However, it still stands that the message would have been a lot more comprehensible with a bit more detail. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
- Original Message - On Sat, Mar 16, 2013 at 1:52 AM, Jean-Michel Pichavant couper is probably a french word, I've seen some of the OP's threads written in french. It means cut. He probably wants to cut some objects in a canvas and paste them in another. Ah. Not having any real comprehension of French, I was thinking along the lines of copy, which thus wouldn't be very far wrong. However, it still stands that the message would have been a lot more comprehensible with a bit more detail. ChrisA -- http://mail.python.org/mailman/listinfo/python-list See http://mail.python.org/pipermail/python-list/2013-March/642708.html I can tell that even in a correct French, the OP gives very few details anyway. He must have lost a bet, and now can only ask questions with 1 subject, 1 verb, no greeting. JM -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- http://mail.python.org/mailman/listinfo/python-list
Re: wxgrid - is there an easy way to set alignment of a column?
On Fri, Mar 15, 2013 at 5:50 AM, tinn...@isbd.co.uk wrote: I'm using wxGrid and finding it fairly straightforward but I can't see an easy way to set the alignment (left, centre, right) for a whole column. There's SetDefaultCellAlignment() which sets the default for the whole grid and there's SetCellAlignment() which sets it for a specific cell but there seems to be no way to set the default alignment for a column. Am I missing something or do I need to do it for individual cells as I load the data? You can use SetColAttr() to set attributes over a whole column. -- http://mail.python.org/mailman/listinfo/python-list
PyDev 2.7.2 Released / Help to keep PyDev alive
Hi All, PyDev 2.7.2 has been released and needs help to be kept being developed. Release Highlights * Updated icons in PyDev to match better a dark theme. * Improved minimap. * Fixed issue copying qualified name when editor is not in the PYTHONPATH. * Removed call home ping from PyDev. * Fixed issue on Ctrl+1 assist to ignore some warning. * Improved comment/uncomment to deal properly with pep8 formatting. Helping PyDev --- Currently, PyDev is raising funds so that it's development can be continued and a lightweight toolchain for editors inside Eclipse can complement it. Please help keeping PyDev alive! More details can be seen at: http://igg.me/at/liclipse What is PyDev? --- PyDev is a plugin that enables users to use Eclipse for Python, Jython and IronPython development -- making Eclipse a first class Python IDE -- It comes with many goodies such as code completion, syntax highlighting, syntax analysis, refactor, debug and many others. Cheers, -- Fabio Zadrozny -- Software Developer PyDev - Python Development Environment for Eclipse http://pydev.org http://pydev.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
REG PYTHON developer
urgently looking for python developer for contract opportunity for one our financial client. Location: NYC, NY Contract: 12 Months 4 to 8 years of Developer experience. Excellent coding and design skills. Software that works is reliable, testable and maintainable should be what you do by default. You enjoy writing software and take pride in what you build. SOL proficiency, particularly with PostgreSQL is a plus. Strong communications skills, both written and verbal. Thanks Regards, Ram i3 Software 100 Wood Avenue South, Suite 105 Iselin, NJ, 08830 (O) 703 953 2828 Think Green: Please consider the environment before printing this e-mail. -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
3.2 and 2.7 results on my desktop using Chris examples (Hope I cut-pasted them correctly) - Welcome to the Emacs shell ~ $ python3 Python 3.2.3 (default, Feb 20 2013, 17:02:41) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. from timeit import timeit timeit(s=s[:-1]+'\u0034',s='asdf'*1,number=1) 0.2893378734588623 timeit(s=s[:-1]+'\u1234',s='asdf'*1,number=1) 0.2842249870300293 timeit(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) 0.28406381607055664 timeit(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) 0.28420209884643555 timeit(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) 0.2853250503540039 timeit(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) 0.283905029296875 ~ $ python Python 2.7.3 (default, Jan 2 2013, 16:53:07) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. from timeit import timeit timeit(s=s[:-1]+'\u0034',s='asdf'*1,number=1) 0.20418286323547363 timeit(s=s[:-1]+'\u1234',s='asdf'*1,number=1) 0.20579099655151367 timeit(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) 0.5055279731750488 timeit(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) 0.28449511528015137 timeit(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) 0.6001529693603516 timeit(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) 0.8430721759796143 -- http://mail.python.org/mailman/listinfo/python-list
Re: What's the easiest Python datagrid GUI (preferably with easy database hooks as well)?
On 15/03/2013 12:36, Sibylle Koczian wrote: Very helpful collection, only one open question: which of them work with Python 3? Not Dabo, sadly, because wxPython doesn't. And not Camelot when I last looked (some weeks ago, though). Will look at Pypapi and SQLkit. Sibylle Note that wxPython is getting there with its so called Phoenix see http://wxpython.org/Phoenix/snapshot-builds/ -- Cheers. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
PSF Python Brochure available as PDF preview. Last chance to order your ad!
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RE: String performance regression from python 3.2 to 3.3
$ python3.2 Python 3.2.3 (default, Jun 25 2012, 22:55:05) [GCC 4.6.3] on linux2 Type help, copyright, credits or license for more information. from timeit import repeat repeat(s=s[:-1]+'\u0034',s='asdf'*1,number=1) [0.2566258907318115, 0.14485502243041992, 0.14464998245239258] repeat(s=s[:-1]+'\u1234',s='asdf'*1,number=1) [0.25584888458251953, 0.1340939998626709, 0.1338820457458496] repeat(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) [0.2571289539337158, 0.13403892517089844, 0.13388800621032715] repeat(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) [0.5022759437561035, 0.3970041275024414, 0.3764481544494629] repeat(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) [0.5213770866394043, 0.38585615158081055, 0.40251588821411133] repeat(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) [0.768744945526123, 0.5852570533752441, 0.6029140949249268] $ python3.3 Python 3.3.0 (default, Sep 29 2012, 15:35:49) [GCC 4.7.1] on linux Type help, copyright, credits or license for more information. from timeit import repeat repeat(s=s[:-1]+'\u0034',s='asdf'*1,number=1) [0.0985728640225716, 0.0984080360212829, 0.07457763599813916] repeat(s=s[:-1]+'\u1234',s='asdf'*1,number=1) [0.901988381985575, 0.7517840950167738, 0.7540924890199676] repeat(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) [0.3069786810083315, 0.17701858800137416, 0.1769046070112381] repeat(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) [1.081760977016529, 0.9099628589756321, 0.9926943230093457] repeat(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) [1.2101859120011795, 1.1039280130062252, 0.9306247030035593] repeat(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) [0.4759294819959905, 0.35435649199644104, 0.3540659479913302] Date: Fri, 15 Mar 2013 10:07:48 -0700 Subject: Re: String performance regression from python 3.2 to 3.3 From: rustompm...@gmail.com To: python-list@python.org 3.2 and 2.7 results on my desktop using Chris examples (Hope I cut-pasted them correctly) - Welcome to the Emacs shell ~ $ python3 Python 3.2.3 (default, Feb 20 2013, 17:02:41) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. from timeit import timeit timeit(s=s[:-1]+'\u0034',s='asdf'*1,number=1) 0.2893378734588623 timeit(s=s[:-1]+'\u1234',s='asdf'*1,number=1) 0.2842249870300293 timeit(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) 0.28406381607055664 timeit(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) 0.28420209884643555 timeit(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) 0.2853250503540039 timeit(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) 0.283905029296875 ~ $ python Python 2.7.3 (default, Jan 2 2013, 16:53:07) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. from timeit import timeit timeit(s=s[:-1]+'\u0034',s='asdf'*1,number=1) 0.20418286323547363 timeit(s=s[:-1]+'\u1234',s='asdf'*1,number=1) 0.20579099655151367 timeit(s=s[:-1]+'\u1234',s='\u1234sdf'*1,number=1) 0.5055279731750488 timeit(s=s[:-1]+'\U00012345',s='asdf'*1,number=1) 0.28449511528015137 timeit(s=s[:-1]+'\U00012345',s='\u1234sdf'*1,number=1) 0.6001529693603516 timeit(s=s[:-1]+'\U00012345',s='\U00012345sdf'*1,number=1) 0.8430721759796143 -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: wxgrid - is there an easy way to set alignment of a column?
Ian Kelly ian.g.ke...@gmail.com wrote: On Fri, Mar 15, 2013 at 5:50 AM, tinn...@isbd.co.uk wrote: I'm using wxGrid and finding it fairly straightforward but I can't see an easy way to set the alignment (left, centre, right) for a whole column. There's SetDefaultCellAlignment() which sets the default for the whole grid and there's SetCellAlignment() which sets it for a specific cell but there seems to be no way to set the default alignment for a column. Am I missing something or do I need to do it for individual cells as I load the data? You can use SetColAttr() to set attributes over a whole column. Ah, yes, thank you. It's a bit of a long way round though and, in my case I think it's simpler just to use SetCellAlignment(). -- Chris Green -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
On Friday, March 15, 2013 7:00:15 AM UTC-5, olsr@gmail.com wrote: i maybe don't talk english very well but at least i am not a Rude,and you are not obligated to answering me much less Mocking me ,i assure you that i will not post anything anymore jackass thank you alex23 Well *WELL*. What happened? Your English is so articulate now. Hmm, maybe you can only write clearly when you are angry, OR, maybe you ordered Rosetta Stone (you know, the cheesy language learning product from those late night TV infomercials, the one where users (oops i meant actors) of the product offer intelligent testimonials like this: Man: ...it was purdy guud! Woman: If you can click a mouse, then, your pretty set! *FACEPALM*: Evolution has forsaken us all! However, i will place all my money on the fact that you are nothing more than an agent provocateur ...(psst: you should understand that word because it is French!)... hell bent on an insidious mission of reverse trolling; which is evident by your inability to distinguish emotional troll posts from logical and informative replies (whether acerbic or not). I'll allow the intelligent folks among us to come to their own conclusions as to your *real* intentions. However, if you are in-fact real (and i use that term quite loosely), then you sir are a fine example of what is wrong with people today. In any event, i wish you good luck with your learning adventures. PS: If you don't like my replies then you need to exercise your freedom by ignoring them. You have a right to be offended, and i have a right not to give a DAMN! Cheers -- http://mail.python.org/mailman/listinfo/python-list
Re: how to couper contenier of a canvas in an outer canvas???
how to couper all the obejcts in a canvas in an auther canvas? On Friday, March 15, 2013 9:09:41 AM UTC-5, rusi wrote: I dont usually bother about spelling/grammar etc. And I think it silly to do so on a python list. However with this question: On Mar 14, 5:16 pm, olsr.ka...@gmail.com wrote: how to couper all the obejcts in a canvas in an auther canvas? obejcts is clearly objects and auther is probably other But what the *^* is couper? I first thought it was couple Indeed. He could have meant to say: Quote = \ How to couple all object in one canvas with corresponding objects in another canvas so that edits in one canvas are reflected in the objects of another canvas. It would be a strange request, but i have witnessed much stranger. But even *IF* we could interpret such cryptic words as coupler and auther, we would still have no idea what the word canvas is referring to. I mean, we could postulate that it is probably a 2D or 3D graphics window, but even then, which GUI library (or gfx library) is he referring to? Maybe he's asking questions about WebGL? WHO KNOWS? A real person would think: oops, i was far too ambiguous with my first question, better re-phrase my question now!. An agent provocateur would think: Got him! Now pretend to be a helpless little student who's just been brow beaten by an overbearing intellectual heavy weight and cry loudly in the corner so everyone will feel sorry for me. *wah* *wah-wah* [peeks over shoulder with quivering lips to see if people are watching] passive voice: ITS WORKING!!! [quickly turns back to corner and ratchets up the emotion] *sobbing* *choking* *sniffling* What a PATHETIC display! -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
Chris Angelico wrote:
Thomas 'PointedEars' Lahn […] wrote:
Chris Angelico wrote:
jmf, I'd like to see evidence that there has been a performance
regression compared against a wide build of Python 3.2. You still have
never answered this fundamental, that the narrow builds of Python are
*BUGGY* in the same way that JavaScript/ECMAScript is.
Interesting. From my work I was under the impression that I knew
ECMAScript and its implementations fairly well, yet I have never heard of
this before.
What do you mean by “narrow build” and “wide build” and what exactly is
the bug “narrow builds” of Python 3.2 have in common with
JavaScript/ECMAScript? To which implementation of ECMAScript are you
referring – or are you referring to the Specification as such?
The ECMAScript spec says that strings are stored and represented in
UTF-16.
No, it does not (which Edition?). It says in Edition 5.1:
| 8.4 The String Type
|
| The String type is the set of all finite ordered sequences of zero or more
| 16-bit unsigned integer values (“elements”). […] Each element is regarded
| as occupying a position within the sequence. These positions are indexed
| with nonnegative integers. The first element (if any) is at position 0,
| the next element (if any) at position 1, and so on. The length of a
| String is the number of elements (i.e., 16-bit values) within it.
|
| […]
| When a String contains actual textual data, each element is considered to
| be a single UTF-16 code unit. Whether or not this is the actual storage
| format of a String, the characters within a String are numbered by
| their initial code unit element position as though they were represented
| using UTF-16. All operations on Strings (except as otherwise stated) treat
| them as sequences of undifferentiated 16-bit unsigned integers; they do
| not ensure the resulting String is in normalised form, nor do they ensure
| language-sensitive results.
|
| NOTE
| The rationale behind this design was to keep the implementation of Strings
| as simple and high-performing as possible. The intent is that textual data
| coming into the execution environment from outside (e.g., user input, text
| read from a file or received over the network, etc.) be converted to
| Unicode Normalised Form C before the running program sees it. Usually this
| would occur at the same time incoming text is converted from its original
| character encoding to Unicode (and would impose no additional overhead).
| Since it is recommended that ECMAScript source code be in Normalised Form
| C, string literals are guaranteed to be normalised (if source text is
| guaranteed to be normalised), as long as they do not contain any Unicode
| escape sequences.
You can see the same thing in Javascript too. Here's a little demo I
just knocked together:
script
function foo()
{
var txt=document.getElementById(in).value;
var msg=;
for (var i=0;itxt.length;++i) msg+=[+i+]: +txt.charCodeAt(i)+
+txt.charCodeAt(i).toString(16)+\n;
document.getElementById(out).value=msg;
}
/script
input id=ininput type=button onclick=foo()
value=Showbrtextarea id=out rows=25 cols=80/textarea
What an awful piece of code.
Give it an ASCII string
You mean a string of Unicode characters that can also be represented with
the US-ASCII encoding. There are no ASCII strings in conforming
ECMAScript implementations. And a string of Unicode characters with code
points within the BMP will suffice already.
and you'll see, as expected, one index (based on string indexing or
charCodeAt, same thing) for each character. Same if it's all BMP. But put
an astral character in and you'll see 00.00.d8.00/24 (oh wait, CIDR
notation doesn't work in Unicode) come up. I raised this issue on the
Google V8 list and on the ECMAScript list es-disc...@mozilla.org, and was
basically told that since JavaScript has been buggy for so long, there's
no chance of ever making it bug-free:
https://mail.mozilla.org/pipermail/es-discuss/2012-December/027384.html
You misunderstand, and I am not buying Rick's answer. The problem is not
that String values are defined as units of 16 bits. The problem is that the
length of a primitive String value in ECMAScript, and the position of a
character, is defined in terms of 16-bit units instead of characters. There
is no bug, because ECMAScript specifies that Unicode characters beyond the
Basic Multilingual Plane (BMP) need not be supported:
| 2 Conformance
|
| A conforming implementation of this Standard shall interpret characters in
| conformance with the Unicode Standard, Version 3.0 or later and ISO/IEC
| 10646-1 with either UCS-2 or UTF-16 as the adopted encoding form,
| implementation level 3. If the adopted ISO/IEC 10646-1 subset is not
| otherwise specified, it is presumed to be the BMP subset, collection 300.
| If the adopted encoding form is not otherwise specified, it presumed to
| be the UTF-16 encoding form.
But they can:
| A conforming implementation of
Re: String performance regression from python 3.2 to 3.3
On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. -- Cheers. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Sat, Mar 16, 2013 at 1:44 PM, Thomas 'PointedEars' Lahn
pointede...@web.de wrote:
Chris Angelico wrote:
The ECMAScript spec says that strings are stored and represented in
UTF-16.
No, it does not (which Edition?). It says in Edition 5.1:
Okay, I was sloppy in my terminology. A language will seldom, if ever,
specify the actual storage. But it does specify a representation (to
the script) of UTF-16, and I seriously cannot imagine any reason for
an implementation to store a string in any other way, given that
string indexing is specifically based on UTF-16:
| The length of a
| String is the number of elements (i.e., 16-bit values) within it.
|
| […]
| When a String contains actual textual data, each element is considered to
| be a single UTF-16 code unit. Whether or not this is the actual storage
| format of a String, the characters within a String are numbered by
| their initial code unit element position as though they were represented
| using UTF-16.
So, yes, it could be stored in some other way, but in terms of what I
was saying (comparing against Python 3.2 and 3.3), it's still a
specification that doesn't allow for the change that Python did. If
narrow builds are all you compare against (as jmf does), then Python
3.2 is exactly like ECMAScript, and Python 3.3 isn't.
You can see the same thing in Javascript too. Here's a little demo I
just knocked together:
script
function foo()
{
var txt=document.getElementById(in).value;
var msg=;
for (var i=0;itxt.length;++i) msg+=[+i+]: +txt.charCodeAt(i)+
+txt.charCodeAt(i).toString(16)+\n;
document.getElementById(out).value=msg;
}
/script
input id=ininput type=button onclick=foo()
value=Showbrtextarea id=out rows=25 cols=80/textarea
What an awful piece of code.
Ehh, it's designed to be short, not beautiful. Got any serious
criticisms of it? It demonstrates what I'm talking about without being
a page of code.
Give it an ASCII string
You mean a string of Unicode characters that can also be represented with
the US-ASCII encoding. There are no ASCII strings in conforming
ECMAScript implementations. And a string of Unicode characters with code
points within the BMP will suffice already.
You can get a string of ASCII characters and paste them into the entry
field. They'll be turned into Unicode characters before the script
sees them. But yes, okay, my terminology was a bit sloppy.
and you'll see, as expected, one index (based on string indexing or
charCodeAt, same thing) for each character. Same if it's all BMP. But put
an astral character in and you'll see 00.00.d8.00/24 (oh wait, CIDR
notation doesn't work in Unicode) come up. I raised this issue on the
Google V8 list and on the ECMAScript list es-disc...@mozilla.org, and was
basically told that since JavaScript has been buggy for so long, there's
no chance of ever making it bug-free:
https://mail.mozilla.org/pipermail/es-discuss/2012-December/027384.html
You misunderstand, and I am not buying Rick's answer. The problem is not
that String values are defined as units of 16 bits. The problem is that the
length of a primitive String value in ECMAScript, and the position of a
character, is defined in terms of 16-bit units instead of characters. There
is no bug, because ECMAScript specifies that Unicode characters beyond the
Basic Multilingual Plane (BMP) need not be supported:
So what you're saying is that an ES implementation is allowed to be
even buggier than I described, and that's somehow a justification?
People have found ways to make this work in ECMAScript implementations. For
example, it is possible to scan a normalized string for lead surrogates:
And it's possible to write a fully conforming Unicode handler in C,
using char[] and relying on (say) UTF-8 encoding. That has nothing to
do with the language actually providing facilities.
But yes, there should be native support for Unicode characters with code
points beyond the BMP, and evidently that does _not_ require a second
language; just a few tweaks to the algorithms.
No, it requires either a complete change of the language, or the
acceptance that O(1) operations can now become O(n) on the length of
the string (if the string is left in UTF-16 but indexed in Unicode),
or the creation of a new user-space data type (which then has to be
converted any time it's given to any standard library function).
Fortunately for Python, there are version numbers, and policies that
permit bugs to actually get fixed. (Which is why, for instance, Debian
Squeeze still ships Python 2.6 rather than upgrading to 2.7 - in case
some script is broken by that change.
Debian already ships Python 3.1 in Stable, disproving your argument.
Separate branch. Debian stable ships one from each branch; Debian
unstable does, too (2.7.3 and 3.2.3). Same argument applies to each,
though - even Debian unstable hasn't yet introduced Python 3.3, in
case it breaks stuff. Argument not disproved.
Can't do that with
Re: String performance regression from python 3.2 to 3.3
On Sat, Mar 16, 2013 at 2:56 PM, Mark Lawrence breamore...@yahoo.co.uk wrote: On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. Sure. Here's the brief version: It's all about how a string is exposed to a script. * Python 3.2 Narrow gives you UTF-16. Non-BMP characters count twice. * Python 3.2 Wide gives you UTF-32. Each character counts once. * Python 3.3 gives you UTF-32, but will store it as compactly as possible. * ECMAScript specifies the semantics of Python 3.2 Narrow. Python 3.2 was either buggy or inefficient. (Generally, Windows builds were buggy and Linux builds were inefficient, but you could pick at compilation time.) String indexing followed obvious rules, as long as everything fitted inside UCS-2, or you paid the four-bytes-per-character price of a wide build. Otherwise, stuff went off-kilter. PEP 393 fixed the matter, and the arguments were about implementation, efficiency, and so on - but (far as I know) nobody ever argued that the semantics of UTF-16 strings should be kept. That's the difference with ES - that behaviour, peculiar though it be, is actually mandated by the spec. I have banged my head against it at work (amazingly, PHP's complete lack of native Unicode support is actually easier to work with there - though mainly I just throw the stuff at PostgreSQL, which will throw an error back if anything's wrong); it's an insane mandate. But it's part of the spec, and it can't be changed now. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
Chris Angelico wrote:
On Sat, Mar 16, 2013 at 1:44 PM, Thomas 'PointedEars' Lahn
pointede...@web.de wrote:
Chris Angelico wrote:
The ECMAScript spec says that strings are stored and represented in
UTF-16.
No, it does not (which Edition?). It says in Edition 5.1:
Okay, I was sloppy in my terminology. A language will seldom, if ever,
specify the actual storage. But it does specify a representation (to
the script) of UTF-16,
No, it does not.
and I seriously cannot imagine any reason for an implementation to store a
string in any other way, given that string indexing is specifically based
on UTF-16:
Non sequitur.
| The length of a String is the number of elements (i.e., 16-bit values)
| within it.
|
| […]
| When a String contains actual textual data, each element is considered
| to
| be a single UTF-16 code unit. Whether or not this is the actual
| storage format of a String, the characters within a String are numbered
| by their initial code unit element position as though they were
| represented using UTF-16.
So, yes, it could be stored in some other way, but in terms of what I
was saying (comparing against Python 3.2 and 3.3), it's still a
specification that doesn't allow for the change that Python did.
Yes, it does. You must have not been reading or understanding what I
quoted.
You can see the same thing in Javascript too. Here's a little demo I
just knocked together:
script
function foo()
{
var txt=document.getElementById(in).value;
var msg=;
for (var i=0;itxt.length;++i) msg+=[+i+]: +txt.charCodeAt(i)+
+txt.charCodeAt(i).toString(16)+\n;
document.getElementById(out).value=msg;
}
/script
input id=ininput type=button onclick=foo()
value=Showbrtextarea id=out rows=25 cols=80/textarea
What an awful piece of code.
Ehh, it's designed to be short, not beautiful. Got any serious
criticisms of it?
Better not here, lest another “moron” would complain.
It demonstrates what I'm talking about without being a page of code.
It could have been written readable and efficient without that.
Give it an ASCII string
You mean a string of Unicode characters that can also be represented with
the US-ASCII encoding. There are no ASCII strings in conforming
ECMAScript implementations. And a string of Unicode characters with code
points within the BMP will suffice already.
You can get a string of ASCII characters and paste them into the entry
field.
Not likely these days, no.
They'll be turned into Unicode characters before the script
sees them.
They will have become Windows-1252 or even Unicode characters long before.
But yes, okay, my terminology was a bit sloppy.
It still is.
and you'll see, as expected, one index (based on string indexing or
charCodeAt, same thing) for each character. Same if it's all BMP. But
put an astral character in and you'll see 00.00.d8.00/24 (oh wait, CIDR
notation doesn't work in Unicode) come up. I raised this issue on the
Google V8 list and on the ECMAScript list es-disc...@mozilla.org, and
was basically told that since JavaScript has been buggy for so long,
there's no chance of ever making it bug-free:
https://mail.mozilla.org/pipermail/es-discuss/2012-December/027384.html
You misunderstand, and I am not buying Rick's answer. The problem is not
that String values are defined as units of 16 bits. The problem is that
the length of a primitive String value in ECMAScript, and the position of
a character, is defined in terms of 16-bit units instead of characters.
There is no bug, because ECMAScript specifies that Unicode characters
beyond the Basic Multilingual Plane (BMP) need not be supported:
So what you're saying is that an ES implementation is allowed to be
even buggier than I described, and that's somehow a justification?
No, I am saying that you have no clue what you are talking about.
But yes, there should be native support for Unicode characters with code
points beyond the BMP, and evidently that does _not_ require a second
language; just a few tweaks to the algorithms.
No, it requires either a complete change of the language, […]
No, it does not. Get yourself informed.
Can't do that with web browsers.)
Yes, you could. It has been done before.
Not easily.
You have still no clue what you are talking about. Get yourself informed at
least about the (deprecated/obsolete) “language” and the (standards-
compliant) “type” attribute of SCRIPT/“script” elements before you post on
this again.
--
PointedEars
--
http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Sat, Mar 16, 2013 at 3:12 PM, Thomas 'PointedEars' Lahn pointede...@web.de wrote: You have still no clue what you are talking about. Fine. I'll shut up on the topic. Go ahead, the floor is yours, go and make whatever point you want to make. Clearly I have absolutely no idea about characters, strings, Unicode, or in fact anything to do with programming, as I obviously have no real-world experience with string manipulation in REXX, Perl, PHP, Python, Pike, JavaScript/ECMAScript/etc, or the language of bash+GNU utilities, and clearly I should just let the experts discuss this stuff. Have fun. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Mar 16, 8:56 am, Mark Lawrence breamore...@yahoo.co.uk wrote: On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. -- Cheers. Mark Lawrence The unicode standard is language-agnostic. Unicode implementations exist withing a language x implementation x C- compiler implementation x … -- Notice the gccs in Andriy's comparison. Do they signify? On Mar 15, 11:04 pm, Andriy Kornatskyy andriy.kornats...@live.com wrote: $ python3.2 Python 3.2.3 (default, Jun 25 2012, 22:55:05) [GCC 4.6.3] on linux2 $ python3.3 Python 3.3.0 (default, Sep 29 2012, 15:35:49) [GCC 4.7.1] on linux The number of actual python implementations is small -- 2.7, 3.1, 3.2, 3.3 -- at most enlarged with wides and narrows; The number of possible implementations is large (in principle infinite) -- a small example of a point in design-space that is not explored: eg There are 17 planes x 2^16 chars in a plane 32 x 2^16 = 2^5 x 2^16 = 2^21 ie wide unicode (including the astral planes) can fit into 21 bits ie 3 wide-chars can fit into 64 bit slot rather than 2. Is this option worth considering? Ive no idea and I would wager that no one does until some trials are done So… Coming back to your question… Checking what other languages are doing speeds up the dream-design-implement-performance-check cycle -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Mar 16, 9:09 am, Chris Angelico ros...@gmail.com wrote: On Sat, Mar 16, 2013 at 2:56 PM, Mark Lawrence breamore...@yahoo.co.uk wrote: On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. Sure. Here's the brief version: It's all about how a string is exposed to a script. * Python 3.2 Narrow gives you UTF-16. Non-BMP characters count twice. * Python 3.2 Wide gives you UTF-32. Each character counts once. * Python 3.3 gives you UTF-32, but will store it as compactly as possible. Framing issue here (made famous by en.wikipedia.org/wiki/ George_Lakoff) When one uses words like 'compact' 'flexible' etc it loads the dice in favour of 3.3 choices. And ignores that 3.3 trades time for space. -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On 16/03/2013 04:35, rusi wrote: On Mar 16, 9:09 am, Chris Angelico ros...@gmail.com wrote: On Sat, Mar 16, 2013 at 2:56 PM, Mark Lawrence breamore...@yahoo.co.uk wrote: On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. Sure. Here's the brief version: It's all about how a string is exposed to a script. * Python 3.2 Narrow gives you UTF-16. Non-BMP characters count twice. * Python 3.2 Wide gives you UTF-32. Each character counts once. * Python 3.3 gives you UTF-32, but will store it as compactly as possible. Framing issue here (made famous by en.wikipedia.org/wiki/ George_Lakoff) When one uses words like 'compact' 'flexible' etc it loads the dice in favour of 3.3 choices. And ignores that 3.3 trades time for space. As stated in PEP 393 so what's all the fuss about? -- Cheers. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On 3/16/2013 12:35 AM, rusi wrote: And ignores that 3.3 trades time for space. This is at least a partial falsehood. It is really sad to see you parroting this. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Mar 16, 9:12 am, Thomas 'PointedEars' Lahn pointede...@web.de wrote: You have still no clue what you are talking about. Get yourself informed at least about the (deprecated/obsolete) “language” and the (standards- compliant) “type” attribute of SCRIPT/“script” elements before you post on this again. -- PointedEars An emotional 'PointedEars?' Now have I dropped into an alternate universe? -- http://mail.python.org/mailman/listinfo/python-list
Re: String performance regression from python 3.2 to 3.3
On Sat, 16 Mar 2013 15:09:56 +1100, Chris Angelico wrote: On Sat, Mar 16, 2013 at 2:56 PM, Mark Lawrence breamore...@yahoo.co.uk wrote: On 16/03/2013 02:44, Thomas 'PointedEars' Lahn wrote: Chris Angelico wrote: Thomas and Chris, would the two of you be kind enough to explain to morons such as myself how all the ECMAScript stuff relates to Python's unicode as implemented via PEP 393 as you've lost me, easily done I know. Sure. Here's the brief version: It's all about how a string is exposed to a script. * Python 3.2 Narrow gives you UTF-16. Non-BMP characters count twice. * Python 3.2 Wide gives you UTF-32. Each character counts once. * Python 3.3 gives you UTF-32, but will store it as compactly as possible. * ECMAScript specifies the semantics of Python 3.2 Narrow. And just for the record: Unicode actually doesn't define what a character is. Instead, it talks about code points, but for our purposes we can gloss over the differences and pretend that they are almost the same thing, except where noted. Some code points represent characters, some represent non- characters, and some are currently unused. UTF-16 is a *variable length* storage mechanism that says each code point takes either two or four bytes. Since Unicode includes more code points than will fit in two bytes, UTF-16 includes a mechanism for dealing with the additional code points: * The first 65,536 code points are defined as the Basic Multilingual Plane, or BMP. Each code point in the BMP is represented in UTF-16 by a 16-bit value. * The remaining 16 sets of 65,536 code points are defined as Supplementary Multilingual Planes, or SMPs. Each code point in a SMP is represented by two 16 bit values, called a surrogate pair. The lead surrogate will be in the range 0xD800...0xDBFF and the trail surrogate will be in the range 0xDC00...0xDFFF. The disadvantage here is that you can't tell how far into a string you need to go to get to (say) the 1000th character (code point). If all of the first 1000 code points are in the BMP, then you can jump directly to byte offset 2000. If all of them are in a SMP, then you can jump directly to byte offset 4000. But since you don't usually know how many SMP code points are in the string, you have to walk through the string: # Pseudo-code to return the code-point in string at index. offset = 0 # Offset in pairs of bytes. counter = 0 while offset length of string counted in pairs of bytes: if string[offset] in 0xD800...0xDBFF: # Lead surrogate of a surrogate pair. if counter == index: return string[offset:offset+1] else: counter += 1 index += 2 # Skip the next pair. elif string[offset] in 0xDC00...0xDFFF: # Trail surrogate found outside of a surrogate pair. raise Error else: # BMP code point. if counter == index: return string[offset] else: counter += 1 index += 1 What a mess! Slow and annoying to get right. Not surprisingly, most implementations of UTF-16 don't do this, and Python is one of them. Instead, they assume that all code points take up the same space, and consequently they let you create *invalid Unicode strings* by splitting a surrogate pair: This is in Python 3.2 narrow build: py s = chr(7) py len(s) 2 py a = s[0] py a == s False py print(a) Traceback (most recent call last): File stdin, line 1, in module UnicodeEncodeError: 'utf-8' codec can't encode character '\ud804' in position 0: surrogates not allowed Oops! We have created an invalid Unicode string. A wide build will fix this, because it uses UTF-32 instead. UTF-32 is a *fixed width* storage mechanism where every code point takes exactly four bytes. Since the entire Unicode range will fit in four bytes, that ensures that every code point is covered, and there is no need to walk the string every time you perform an indexing operation. But it means that if you're one of the 99.9% of users who mostly use characters in the BMP, your strings take twice as much space as necessary. If you only use Latin1 or ASCII, your strings take four times as much space as necessary. So a Python wide build uses more memory, but gets string processing right. Python 3.3 has the best of both worlds, fixing the invalid string processing and avoiding memory waste. One of the complications here is that often people conflate UTF-16 and UCS-2. It isn't entirely clear to me, but it seems that ECMAScript may be doing that. UCS-2 specifies that *all characters* are represented by *exactly* 16 bits (two bytes), and hence it is completely unable to deal with the Supplementary Multilingual Planes at all. If I have read the ECMAScript spec correctly, it *completely ignores* the issue of surrogate pairs, and so is underspecified. Instead it talks about normalised form, which is entirely unrelated. Normalisation relates to the idea that many characters
Re: String performance regression from python 3.2 to 3.3
On Fri, 15 Mar 2013 21:35:42 -0700, rusi wrote: And ignores that 3.3 trades time for space. So what? Lists, dicts and sets trade time for space: they are generally over-allocated to ensure a certainly level of performance. The language designers are perfectly permitted to make that choice. If somebody wants to make another choice they can design their own language, or write their own data structures, or put in a bug report and hope to influence the language designers to change their minds. Why should strings be treated any differently? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
[issue17427] re
New submission from august smith: lol -- messages: 184215 nosy: JUNO priority: normal severity: normal status: open title: re ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17427 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17427] spam
Changes by Ezio Melotti ezio.melo...@gmail.com: -- nosy: -JUNO resolution: - invalid stage: - committed/rejected status: open - closed title: re - spam ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17427 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17427] spam
Changes by Ezio Melotti ezio.melo...@gmail.com: -- Removed message: http://bugs.python.org/msg184215 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17427 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17415] Clarify docs of os.path.normpath()
Ezio Melotti added the comment: I will correct that if you make me aware about it! Try to use meaningful titles, e.g. Clarify docs of os.path.normpath(). See http://docs.python.org/devguide/triaging.html for more informations. Also if you could provide patches that would be even better. The devguide explains how to make patches. For this issue it might be enough to simply swap the two sentences. -- keywords: +easy nosy: +ezio.melotti, terry.reedy stage: - needs patch title: Documentation Ambiguity 1 - Clarify docs of os.path.normpath() versions: +Python 2.7, Python 3.2, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17415 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: You're right - groups are defined here: http://docs.python.org/2/library/re.html#re.MatchObject.group The need to fix this is to gain internal language consistency, external consistency with other major implementations, reduce docs and amount of exception to remember, and thus make this part intuitive. The external inconsistency is that other languages use \0 and don't make distinction between match group and substition group. I wonder if there are any other differences justify the presence of this distinction? Internal inconsistency is in substitution groups notation: \0 is \x0 but is not \g0 \1 is not \x1 but is \g1 Let me also put accent that re is a module - not a feature of Python language - that provides ability to work with regular expressions. Evolution led to the best practices that became unwritten standard in different implementations - like using \x for backreferences in replacements. If some library invents its own standards that add nothing to the user rather than another thing to remember [1] then the user is automatically granted the right to wear the sign this library suxx on her t-shirt. I'd classify a 'language wart' as an inconsistency in expected behavior, independent of the language, where a technical fix is possible, but can not be fixed due to backward compatibility concerns. Language independent, because single language is by definition works as documented and has different features in implementation details. 1. http://php.net/manual/en/types.comparisons.php -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: Am I right that \0 is not supported just because nobody thought about supporting it? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17414] timeit.timeit not in __all__ even though documented
Roundup Robot added the comment: New changeset dda8a6b8a351 by Terry Jan Reedy in branch 'default': Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__. http://hg.python.org/cpython/rev/dda8a6b8a351 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17414 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17414] timeit.timeit not in __all__ even though documented
Terry J. Reedy added the comment: Fred Drake, Eli Bendersky, and in particular, Guido (I do see that it shouldn't be backported, but I don't see any worries about doing it in 3.4.) said that this is a 3.4-only enhancement. Anuj, ACKS are alphabetical. Åstrand is at the end because that is where Å sorts. Thanks for the patch. We hope to see more. -- versions: -Python 2.6, Python 2.7, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17414 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17414] timeit.timeit not in __all__ even though documented
Changes by Terry J. Reedy tjre...@udel.edu: -- resolution: - fixed stage: needs patch - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17414 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17415] Clarify docs of os.path.normpath()
Terry J. Reedy added the comment: The question is what is the 'this' that may change the patch meaning. It does not seem to me that changing '/' to '\' would do that. So I suspect 'this' refers to 'collapsing'. If so, I suggest the entry be: Normalize a pathname (but not the case -- use normcase for that). This collapses redundant separators and up-level references so that A//B, A/B/, A/./B and A/foo/../B all become A/B. This collapsing may change the meaning of the path if it contains symbolic links! On Windows, normpath also converts forward slashes to backward slashes. -- nosy: +loewis, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17415 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17047] Fix double double words words
Roundup Robot added the comment: New changeset 4b28a6a3eda6 by Terry Jan Reedy in branch '3.2': Issue #17047: Add news entry http://hg.python.org/cpython/rev/4b28a6a3eda6 New changeset 937989570b42 by Terry Jan Reedy in branch '3.3': Merge with 3.2: issue #17047 news entry http://hg.python.org/cpython/rev/937989570b42 New changeset f0a3c2006adb by Terry Jan Reedy in branch 'default': Merge with 3.2: closes issue #17047 http://hg.python.org/cpython/rev/f0a3c2006adb -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17047 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Ezio Melotti added the comment: PERL uses $ for the whole match rather than $0. That would explain why \0 is not supported. For .group() it probably made sense to access the whole match using 0 rather than passing something else, and that was likely reflected in the \g... form, but not in the \X form. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17047] Fix double double words words
Changes by Terry J. Reedy tjre...@udel.edu: -- resolution: - fixed stage: patch review - committed/rejected status: open - closed type: enhancement - behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17047 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17047] Fix double double words words
Changes by Terry J. Reedy tjre...@udel.edu: -- assignee: docs@python - terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17047 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17428] replace readdir to readdir_r in function posix_listdir
New submission from Rock Li: When I'm how glob module is implemented. I found in file posixmodule.c, the function posix_listdir is using readdir to get all the entries under one directory and the context is setted to allow multi threads. But the function readdir is not thread-safe, so I changed this call to use readdir_r instead. I'm using the lastest codes in the repo. -- components: Extension Modules files: mywork.patch keywords: patch messages: 184224 nosy: Rock priority: normal severity: normal status: open title: replace readdir to readdir_r in function posix_listdir type: enhancement versions: Python 3.4 Added file: http://bugs.python.org/file29413/mywork.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17428 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: The perl syntax supported $0 according to this doc http://turtle.ee.ncku.edu.tw/docs/perl/manual/pod/perlre.html but was removed for unknown reason. Using the fact that support is removed without knowing the true reason is cargo cult argument, which I hope is not acceptable for Python development. Among the possible reason can be binding of $0 to the __file__ analogue according to this doc - http://www.cs.cmu.edu/afs/cs/usr/rgs/mosaic/pl-predef.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13918] locale.atof documentation is missing func argument
Cédric Krier added the comment: Here is a patch for the documentation. -- keywords: +patch resolution: wont fix - Added file: http://bugs.python.org/file29414/doc_atof.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13918 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17053] pydoc should use inspect.signature instead of inspect.getfullargspec
Ronald Oussoren added the comment: The attached patch appears to work correctly and includes a test for pydoc (text output). There could be more testing (HTML output, annotations, positional-only arguments). With this patch I can get usable documentation for Cocoa classes with a patched version of PyObjC that includes an __signature__ property on ObjC method objects. As mentioned before I'm not sure about the 'render' method added to inspect.Signature and inspect.Parameter. These methods were needed to generate output that's compatible with the current pydoc output, in particular to emit better HTML output. -- keywords: +patch stage: test needed - patch review Added file: http://bugs.python.org/file29415/issue17053.txt ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17053 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Matthew Barnett added the comment: The regex behaves the same as re. The reason it isn't supported is that \0 starts an octal escape sequence. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Guido van Rossum added the comment: Anatoly, your argument for consistency with other languages is ridiculous. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1291] test_resource fails on recent linux systems
Roundup Robot added the comment: New changeset 59292f366b53 by Senthil Kumaran in branch 'default': #1291 http.server's send_error takes an optional explain argument http://hg.python.org/cpython/rev/59292f366b53 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1291 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12921] http.server.BaseHTTPRequestHandler.send_error , ability send a detailed response
Senthil Kumaran added the comment: I have added explain argument in 3.4, committed changeset 82669:59292f366b53 I think the short message no trailing line assertion should be taken by next. Either a new issue it if already open or create one just for the purpose. Thanks Karl for the patch. -- resolution: - fixed stage: - committed/rejected status: open - closed title: http.server.BaseHTTPRequestHandler.send_error and trailing newline - http.server.BaseHTTPRequestHandler.send_error , ability send a detailed response ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12921 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12921] http.server.BaseHTTPRequestHandler.send_error , ability send a detailed response
karl added the comment: Thanks! Yes we should open a separate issue. I will look at the current patch and see what I can propose for the next step. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12921 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12921] http.server.BaseHTTPRequestHandler.send_error , ability send a detailed response
karl added the comment: just a minor issue you made a mistake in the commit message. The issue number is 12921 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12921 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17429] platform.platform() can throw Unicode error
New submission from Toshio Kuratomi:
Tested on python-3.2 and python-3.3. platform.platform() looks for a file in
/etc/ that looks like it will contain the name of the Linux distribution that
python3 is running on. Once found, it reads the contents of the file to have a
name for the Linux distribution. Most Linux distributions do create files
inside of /etc/ with a single line which is the distribution name so this is a
good heuristic. However, these files are created by the operating system
vendor and so they can have a different encoding than the encoding of the
locale the user uses. This means that if there are non-ascii characters inside
the file, user code that invokes platform.platform() may throw a traceback.
Test:
$ LC_ALL=en_US.utf8 sudo echo ' Café' /etc/fedora-release
$ LC_ALL=C python3
import platform
platform.platform()
Traceback (most recent call last):
File stdin, line 1, in module
File /usr/lib64/python3.2/platform.py, line 1538, in platform
distname,distversion,distid = dist('')
File /usr/lib64/python3.2/platform.py, line 358, in dist
full_distribution_name=0)
File /usr/lib64/python3.2/platform.py, line 329, in linux_distribution
firstline = f.readline()
File /usr/lib64/python3.2/encodings/ascii.py, line 26, in decode
return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 22:
ordinal not in range(128)
It seems that the standard method of fixing these that we're promoting in
python3 is to use surrogateescape. I'll provide a patch that does that.
--
messages: 184234
nosy: a.badger
priority: normal
severity: normal
status: open
title: platform.platform() can throw Unicode error
versions: Python 3.2, Python 3.3
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[issue17429] platform.platform() can throw Unicode error
Changes by Toshio Kuratomi a.bad...@gmail.com: -- keywords: +patch Added file: http://bugs.python.org/file29416/00175-platform-unicode.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: Matthew, finally the right answer. Thanks! Looking further, there is a bug in processing backslashes in raw literal replacement strings. re.sub ignores raw strings as replacements. This can be even more confusing for people who look for more advanced equivalent for string replace(). patt = aaa repl = rzed \0 org print( aaa .replace(patt, repl)) import re print(re.sub(patt, repl, aaa )) This gives: zed \0 org zed org With `repl = zed \0 org`, the output matches: zed org zed org -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Guido van Rossum added the comment: Anatoly, your question belongs on python-list or stack overflow, not in the tracker. --Guido van Rossum (sent from Android phone) On Mar 15, 2013 9:28 AM, anatoly techtonik rep...@bugs.python.org wrote: anatoly techtonik added the comment: Matthew, finally the right answer. Thanks! Looking further, there is a bug in processing backslashes in raw literal replacement strings. re.sub ignores raw strings as replacements. This can be even more confusing for people who look for more advanced equivalent for string replace(). patt = aaa repl = rzed \0 org print( aaa .replace(patt, repl)) import re print(re.sub(patt, repl, aaa )) This gives: zed \0 org zed org With `repl = zed \0 org`, the output matches: zed org zed org -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17386] Bring Doc/make.bat as close to Doc/Makefile as possible
Zachary Ware added the comment: Applying the minipatch makes the big patch fail to apply, so here's an update. Also changed in this version of the patch: - README.txt is updated. Not all the changes directly relate to this patch, but there were some needed updates in there anyway. If desired, I can split those into a separate issue, but all the changes are fairly minor. - Added *VERSION variables for each of the tools for easy overriding and easier-to-find, single place to update. Terry, you're right about make.bat being very similar between versions. About the only other difference I saw was the removal of the line that prints the Python version in use, and the version of Pygments used. I'd be happy to make patches for backporting this as far as desired (assuming, of course, that it is accepted and is desirable to backport :-). -- Added file: http://bugs.python.org/file29417/win_doc_make.v2.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17386 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17386] Bring Doc/make.bat as close to Doc/Makefile as possible
Changes by Zachary Ware zachary.w...@gmail.com: Removed file: http://bugs.python.org/file29417/win_doc_make.v2.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17386 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17386] Bring Doc/make.bat as close to Doc/Makefile as possible
Changes by Zachary Ware zachary.w...@gmail.com: Added file: http://bugs.python.org/file29418/win_doc_make.v2.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17386 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: I thought that trackers are used to track the sources of the bugs. Aren't they? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: Users list the effect. Then a research is made to find the source. Then a decision is made to find the right cause for the source of the bug, and then a decision about if the fix is possible. The bug is closed, but that doesn't mean we can not dedicate some time trying to research the cause. This research can be used to develop other language and explain the mechanism why this feature works like it does. If people are not interested, they can opt-out. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Amaury Forgeot d'Arc added the comment: Anatoly, your last question about re.sub is covered by the documentation: re.sub will process the replacement string, and interpret the sequence \ 0 as the NUL character. So you get the NUL character in the returned string. This is unrelated to raw literal strings. And yes, sometimes you need 4 backslashes to get one in the output: print(re.sub(b, , abc)) a\c -- nosy: +amaury.forgeotdarc ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17429] platform.platform() can throw Unicode error
Martin v. Löwis added the comment: What's the most likely encoding? UTF-8? I suggest we assume UTF-8, and use the surrogate-escape error handler to deal with the cases when it isn't. -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: Amaury, the documentation could make it more clear that it is a double replacement. Of course I payed attention to the repeated instructions about string substitution, but I thought that it is just a reminder, not an extra processing layer on top of standard string processing logic. Currently it reads like: ...if it is a string, any backslash escapes in it are processed. That is, \n is... The correct text would be like: ...if it is a string, any backslash escapes in it are processed in addition to standard string escapes. That is, \n is... ... Note that re.sub backslash processing for replacement string occurs even if the raw strings. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
anatoly techtonik added the comment: FWIW, I reimplemented substitution logic in my wikify [1] engine some time ago. I was kind of disappointed that I have to reinvent the bicycle, but now I see that this was for good. Thanks to people in this report I now understand the whole stuff much better and this will definitely make wikify more useful and easier to use. 1. https://bitbucket.org/techtonik/wikify -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17426] \0 in re.sub substitutes to space
Amaury Forgeot d'Arc added the comment: It's not a double replacement: chr(92)+chr(0) is processed only once. And the second paragraph of the re documentation already contains such a warning. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17423] libffi on 32bit is broken on linux
Changes by Simon Cross hodges...@gmail.com: -- nosy: +hodgestar ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17423 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17430] missed peephole optimization
New submission from Neal Norwitz: def fo(): ... if a: ... if b: ... if c: ...print ... dis.dis(fo) 2 0 LOAD_GLOBAL 0 (a) 3 POP_JUMP_IF_FALSE 28 3 6 LOAD_GLOBAL 1 (b) 9 POP_JUMP_IF_FALSE 28 4 12 LOAD_GLOBAL 2 (c) 15 POP_JUMP_IF_FALSE 25 5 18 PRINT_NEWLINE 19 JUMP_ABSOLUTE 25 22 JUMP_ABSOLUTE 28 25 JUMP_FORWARD 0 (to 28) 28 LOAD_CONST 0 (None) 31 RETURN_VALUE The 2 JUMP_ABSOLUTEs should be optimized away since the code is equivalent to: if a and b and c: as in: dis.dis(fo) 2 0 LOAD_GLOBAL 0 (a) 3 POP_JUMP_IF_FALSE 22 6 LOAD_GLOBAL 1 (b) 9 POP_JUMP_IF_FALSE 22 12 LOAD_GLOBAL 2 (c) 15 POP_JUMP_IF_FALSE 22 3 18 PRINT_NEWLINE 19 JUMP_FORWARD 0 (to 22) 22 LOAD_CONST 0 (None) 25 RETURN_VALUE -- messages: 184245 nosy: Neal.Norwitz priority: normal severity: normal status: open title: missed peephole optimization type: performance versions: Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17430 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17337] input() and raw_input() do not work correctly with colored prompts
Michael Enßlin added the comment: Terry, i guess you are right; it is indeed not the job of python to know how its terminal will print characters; there is a whole lot of issues to consider, such as terminal unicode support, control characters, ansi escape sequences, terminal-specific escape sequences such as terminal title, etc. I guess that on UNIX, a lot of that information could be taken from terminfo, to provide a method that guesses the length of a text on the terminal that is referenced in the $TERM environment variable. In fact, I think this is a design problem of readline; readline should print the prompt, and then try to determine its length via the dedicated escape sequence (if it really needs to know the prompt length). In that case, there would be no way to fix this in python - apart from re-implementing. In conclusion, no, I don't believe the python readline code should be modified, maybe an additional, os- and $TERM-dependent method for adding prompt escapes should be added. However, the issue should definitely be documented in the readline documentation: importing readline _will_ break input() if the prompt contains non-printable characters that are not escaped by '\x01' and '\x02' characters. Hence I have changed the bug components to 'Documentation'. -- assignee: - docs@python components: +Documentation -Library (Lib) nosy: +docs@python ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17337 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17431] email.parser module has no attribute BytesFeedParser
New submission from Forest Wilkinson: The docs claim that email.parser.BytesFeedParser exists, but it doesn't. Looks like email.feedparser.FeedParser is imported into the email.parser module, but someone forgot to do the same for BytesFeedParser. -- components: email messages: 184247 nosy: barry, forest, r.david.murray priority: normal severity: normal status: open title: email.parser module has no attribute BytesFeedParser versions: Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17431] email.parser module has no attribute BytesFeedParser
R. David Murray added the comment: Thanks for the report. -- keywords: +easy stage: - needs patch versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17400] ipaddress.is_private needs to take into account of rfc6598
pmoody added the comment: Is the request that is_private should return true for all reserved/non-routable addresses? The docstrings refer to specific rfcs which don't cover most of the addresses listed in the wikipedia page. I haven't done a lot of network programming in the last couple of years, so what do folks think the least surprising result here would be? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17400 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17428] replace readdir to readdir_r in function posix_listdir
Ross Lagerwall added the comment: Hi, There shouldn't be a problem with the existing implementation since, according to posix: The pointer returned by readdir() points to data which may be overwritten by another call to readdir() on the same directory stream. This data is not overwritten by another call to readdir() on a different directory stream. Since each call to listdir() opens a different directory stream, this shouldn't be a problem. Also, when using readdir_r(), struct dirent should not be allocated on the stack since the last field may be an unspecified size. See the following for further reading about this: http://elliotth.blogspot.co.uk/2012/10/how-not-to-use-readdirr3.html http://womble.decadent.org.uk/readdir_r-advisory.html Regards -- nosy: +rosslagerwall ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17428 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13918] locale.atof documentation is missing func argument
Terry J. Reedy added the comment:
I find the idea of intentionally not documenting a public parameter and the
full signature of a function somewhat strange, especially when it is already
automatically partially-documented.
import locale
help(locale.atof)
Help on function atof in module locale:
atof(string, func=class 'float')
Parses a string as a float according to the locale settings.
# 2.7, 3.2, 3.3
Not documenting the full signature of a function seems to me contrary to proper
policy. That aside, the func parameter is, to me, a useful feature, not just an
implementation detail
The way to have factored out the common normalization without a func parameter
is obvious: define a private normalization function.
def _anormalize(string):
remove thousands separators, make decimal dot
ts = localeconv()['thousands_sep']
if ts:
string = string.replace(ts, '')
#next, replace the decimal point with a dot
dd = localeconv()['decimal_point']
if dd:
string = string.replace(dd, '.')
return string
def atof(string):
Parses a string as a float according to the locale settings.
return float(_anormalize(string))
def atoi(string): # changed from str
Converts a string to an integer according to the locale settings.
return int(_anormalize(string))
But Martin von Loewis, the original author did not do this. I would not assume
that he thought that copying 3 lines from atof into atoi was a bad idea.
without asking him. Whatever his conscious intention, the func parameter
*does* have the advantage of allowing alternate float string to number
converters. We now have another one in the stdlib besides decimal.Decimal:
fractions.Fractions.
locale.atof('99,999.99', F)
Fraction(999, 100)
# versus
F(locale.atof('99,999.99'))
Fraction(6871946986405233, 68719476736)
There are also 3rd party float implementations, such as indefinite precision
binary floats. Does anyone still object to properly documenting this useful
feature? I am willing to do the commits.
As to the patch and atof docstring, I thinks 'converts' (used in atoi
docstring) is better than 'parses'. So I would change both.
--
nosy: +terry.reedy
versions: +Python 2.7, Python 3.2, Python 3.3, Python 3.4
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[issue14468] Update cloning guidelines in devguide
Roundup Robot added the comment: New changeset 7a707540391e by Ezio Melotti in branch 'default': #14468: add FAQs about merge conflicts, null merges, and heads merges. http://hg.python.org/devguide/rev/7a707540391e -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14468 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10652] test___all_ + test_tcl fails (Windows installed binary)
Zachary Ware added the comment: I was recently bitten by this issue. I've reviewed Terry's patch on Rietveld, and have tested it myself some. It seems to get the job done without getting in the way. -- nosy: +zach.ware ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10652 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17398] document url argument of RobotFileParser
Changes by Terry J. Reedy tjre...@udel.edu: -- assignee: docs@python - terry.reedy nosy: +terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17398 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17398] document url argument of RobotFileParser
Roundup Robot added the comment: New changeset 274e68e2a5a6 by Terry Jan Reedy in branch '2.7': Issue #17398: document url argument of RobotFileParser http://hg.python.org/cpython/rev/274e68e2a5a6 New changeset 4be7f8da7adf by Terry Jan Reedy in branch '3.2': Issue #17398: document url argument of RobotFileParser http://hg.python.org/cpython/rev/4be7f8da7adf -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17398 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10652] test___all_ + test_tcl fails (Windows installed binary)
Ezio Melotti added the comment: Would using import_fresh_module() in test_tcl (and others) work? -- versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10652 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17398] document url argument of RobotFileParser
Terry J. Reedy added the comment: Agreed. -- resolution: - fixed stage: - committed/rejected status: open - closed type: - behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17398 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17337] input() and raw_input() do not work correctly with colored prompts
Terry J. Reedy added the comment: Please suggest the specific change in a specific place that you would like to see. Message is ok, patch even better. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17337 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17400] ipaddress.is_private needs to take into account of rfc6598
Terry J. Reedy added the comment: Peter, 'Assigned To' is a developer who intends to push (or has pushed) a patch. Anyone can write and attach one. And it is nice to give notice that you intend to. -- nosy: +ncoghlan, terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17400 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1159051] Handle corrupted gzip files with unexpected EOF
Matthias Klose added the comment: this change breaks a test case in the bzr testsuite; will try to get to it next week. See https://launchpad.net/bugs/1116079 -- nosy: +doko, larry priority: normal - release blocker ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1159051 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
