Issue 1 of PET: English Translation a Python magazine is out!
This magazine is a community effort. It's done by Python guys in Argentina. We are quite proud of it, and we hope you like it too. You can read Issue 1 in our webpage: http://revista.python.org.ar/1/html-en/ It's available in several different formats, including PDF, ePub, Mobipocket, HTML and FB2, and is released under a CC-by-nc-sa license. It has been translated to english by us, and we are not native speakers. Hopefully Shakespeare will not raise from his grave to slap us for grievous offense against his language! But, to save us from the Wrath of Wil, feel free to point out any mistakes and unhappy turns of phrase in the comments. Now that we have the english version out, we have *much bigger* plans for our second issue. We'll keep you posted. -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
cx_OracleTools 8.0
What is cx_OracleTools? cx_OracleTools is a set of Python scripts that handle Oracle database development tasks in a cross platform manner and improve (in my opinion) on the tools that are available by default in an Oracle client installation. Those who use cx_Oracle may also be interested in this project, if only as sample code. Binaries for Windows and Linux are provided for those who do not have a Python installation. Where do I get it? http://cx-oracletools.sourceforge.net What's new? 1) In DescribeObject, added option --show-synonyms which enables display of synonyms that reference the object. The default value for this option is false. 2) In DescribeObject, DescribeSchema, ExportObjects and RebuildTable, added support for Oracle context objects. 3) In DescribeSchema, ExportObjects and RecompileSource, added option --name-file which acts in the same fashion as the --name option except that the value of the option refers to a file containing a list of names, one name per line. 4) In DescribeObject, DescribeSchema and ExportObjects, added option --include-view-columns which enables specification of the column names when creating a view. 5) In DescribeObject and DescribeSchema added support for eliminating the quotas on tablespaces when generating create user statements. 6) In DescribeObject, DescribeSchema and ExportObjects, added options --as-of-timestamp and --as-of-scn which enable flashback queries when performing describes. This can be very useful for recovering those accidentally issued DDL commands! 7) In DumpCSV, make use of the builtin module csv and the standard option --schema; in addition, allow the file name to be specified as - or not at all in which case the output goes to stdout. 8) In DumpData, added support for dumping CLOB, BLOB and binary data values correctly. A commit statement is also appended to the output now as a convenience. 9) In ExportXML, added option --sort-by which allows the result set to be sorted before exporting. In addition, the source can be a query instead of simply a table name. 10) In GeneratePatch, switch to the new more intelligent parser. 11) In ImportXML, now use cElementTree rather than home-grown XML processing library. 12) In RebuildTable, removed SQL*Plus specific statements since by default connect statements are issued which only works properly with PatchDB. 13) In RecompileSource, added option --connect-as-owner and removed option --password. The new option specifies that when invalid objects are recompiled that a connection to the owner of the invalid object is established using the password of the current connection. The default value is false since this is an uncommon situation and is retained at all for support of product development at Computronix. 14) Replaced CompileSource with PatchDB which uses a much more advanced parser and is setup to handle additional commands besides executing SQL scripts. 15) Added setup.py for building with cx_Freeze which means that MSI packages for Windows and RPM packages for Linux are now available. 16) Other changes required to keep up with changes in Python, dependent libraries and Oracle (including up to Oracle 11.2) Anthony Tuininga -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: How Python works: What do you know about support for negativeindices?
Mark Tolonen: It came across fine for me (on much maligned Outlook Express, no less). Yes, looks fine to me both in Thunderbird (news, not mailing list) and at Google Groups. There is a single text part with all lines except an URL easily within 80 columns. Perhaps there is a problem in Ben's reader or in the mailing list gateway. Neil -- http://mail.python.org/mailman/listinfo/python-list
Re: 32 bit bdist_wininst vs x64 platform
Hi Robin, On 9/09/2010 9:28 PM, Robin Becker wrote: A reportlab user is using 32 bit python on x64 win 2003. he has a problem installing our bdist_wininst exe because the installer cannot find python. That should work fine - lots of pywin32 users do exactly that. Apparently the installer is looking at HKLM\Software to locate python, but on x64 32 bit program requests get redirected to HKLM\Software\Wow6432Node (Extended explanation in KB article 896459). Is this fixable by me making a local patch to my distutils to check for the real platform and modifying the RegOpenKeyEx call? Or is there some distutils magic that I'm missing? As you mention, 32bit apps querying the registry get redirected in some cases - but so long as the 32bit bdist_wininst stub is used, that too will get redirected, so it should all work out fine. Is it possible they are attempting to install an x64 version of reportlab on a 32bit python? Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Printing the name of a variable
Stephen Boulet stephen.bou...@gmail.com writes: Does an arbitrary variable carry an attribute describing the text in its name? I'm looking for something along the lines of: x = 10 print x.name 'x' Perhaps the x.__getattribute__ method? Thanks. The first thing is... what is your use case for this? I'd guess that you probably don't want to do this even if you think you do :) The thing referred to by x is the number 10. When you write x.name (or property) then you're dealing with the number 10, not with some representation of the variable x. There may be many variables (or none) that refer to that number at any given time during the execution of your code... and the object itself knows nothing about any of these. A good way to think about variable lookup is as a dictionary . It's something like variables['x'].name. Once the varables['x'] bit has been evaluated the link with 'x' is gone... we just have the result of the lookup. If you want to know how it actually works, then read up on python namespaces and scopes, e.g. here: http://www.network-theory.co.uk/docs/pytut/PythonScopesandNameSpaces.html. -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
Raymond Hettinger wrote:
collections.deque('abcde').__getitem__[-2] # extension class, magic
method
Small nit: You don't mean [square] brackets here, right?
Otherwise, good posting, thank you!
Uli
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Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932
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inspect the call stack
i v'e got this : i've got toto.py : import titi def niwhom(): pass and titi.py : def nipang(): pass how can i know in titi.py that's it's toto.py that is calling titi.py and the path of toto ? how can i inspect the call stack or an other way ? Regards Bussiere Google Fan boy -- http://mail.python.org/mailman/listinfo/python-list
Re: 32 bit bdist_wininst vs x64 platform
.. As you mention, 32bit apps querying the registry get redirected in some cases - but so long as the 32bit bdist_wininst stub is used, that too will get redirected, so it should all work out fine. Is it possible they are attempting to install an x64 version of reportlab on a 32bit python? .. I'm a bit puzzled about this as well, they mentioned something about the python being embedded so perhaps that's the problem. I am trying to ascertain the exact context. -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
Re: SendKeys and Python 2.7
In message mailman.600.1284026879.29448.python-l...@python.org, Jakson A. Aquino wrote: I would like to send code from Vim [1] to R [2] on Microsoft Windows. Why such a roundabout way? Why not just run R in a subprocess and feed it a script to run? [1] http://www.vim.org/ [2] http://www.r-project.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Arguments from the command line
In message 8662yfklzu@aiuole.stru.polimi.it, Giacomo Boffi wrote: Dennis Lee Bieber wlfr...@ix.netcom.com writes: FORTRAN just differentiates by having the main file start with PROGRAM random_name whereas subfiles are all either (or both) SUBROUTINE another_name(args) FUNCTION that_other_name(args) no BLOCKDATA? I think you mean COMMON. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Arguments from the command line
In message i6aqk5$ro...@speranza.aioe.org, Mel wrote: But historical COBOL didn't pass parameters anyway. You read your optional arguments from a file, or accepted a few from an input device. I think it could also read from switches. As in front-panel on/off switches. -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
Ben Finney ben+pyt...@benfinney.id.au writes: Raymond Hettinger pyt...@rcn.com writes: It doesn't seem to be common knowledge when and how a[x] gets translated to a[x+len(x)]. So, here's a short info post on how Python supports negative indices for sequences. Thanks for this. Could you post your messages using a channel that doesn't arbitrarily split your paragraphs into long-short-long-short lines? hi Ben, i see that you uses gnus... well, it's gnus that does the unwanted formatting try C-u g, as dettailed below, ciao g runs `gnus-summary-show-article' `gnus-summary-show-article' is an interactive compiled Lisp function -- loaded from gnus-sum (gnus-summary-show-article optional ARG) Documentation: Force redisplaying of the current article. If ARG (the prefix) is a number, show the article with the charset defined in `gnus-summary-show-article-charset-alist', or the charset input. If ARG (the prefix) is non-nil and not a number, show the raw article without any article massaging functions being run. Normally, the key strokes are `C-u g'. -- la lenza penzola -- PMF, in IHC -- http://mail.python.org/mailman/listinfo/python-list
Re: Printing the name of a variable
On Sep 9, 9:11 pm, Albert Hopkins mar...@letterboxes.org wrote: On Thu, 2010-09-09 at 12:43 -0700, Stephen Boulet wrote: Does an arbitrary variable carry an attribute describing the text in its name? I'm looking for something along the lines of: x = 10 print x.name 'x' Perhaps the x.__getattribute__ method? Thanks. Variables are not objects and so they have no attributes. You can't really de-reference the object being referenced as it can potentially contain multiple references, but an innacurate way of doing this would be, e.g. x = [1, 2, 3] y = x g = globals() varnames = [i for i in g if g[i] is x] ['x', 'y'] But this cries the question: why do you want to do this? And usually that question is asked when someone thinks that a: you shouldn't need to do this and b: whatever the desired effect there is probably a better way of accomplishing it. I have in the past wondered about creating a kind of graphical debugger, that rendered representations of all the objects in globals and/or locals, to give you a visual representation of your variables and their states. Would this be a valid use case to try and look up the variable names which reference various in-memory objects? -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
On Thu, 09 Sep 2010 18:37:49 -0700, Raymond Hettinger wrote: Hello Folks. It doesn't seem to be common knowledge when and how a[x] gets translated to a[x+len(x)]. So, here's a short info post on how Python supports negative indices for sequences. [...] Hope you all found this to be informative, Thanks Raymond! -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Printing the name of a variable
On 9 September 2010 20:43, Stephen Boulet stephen.bou...@gmail.com wrote: Does an arbitrary variable carry an attribute describing the text in its name? I'm looking for something along the lines of: x = 10 print x.name 'x' http://effbot.org/pyfaq/how-can-my-code-discover-the-name-of-an-object.htm -- Cheers, Simon B. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Arguments from the command line
Lawrence D'Oliveiro l...@geek-central.gen.new_zealand writes: In message 8662yfklzu@aiuole.stru.polimi.it, Giacomo Boffi wrote: Dennis Lee Bieber wlfr...@ix.netcom.com writes: FORTRAN just differentiates by having the main file start with PROGRAM random_name whereas subfiles are all either (or both) SUBROUTINE another_name(args) FUNCTION that_other_name(args) no BLOCKDATA? I think you mean COMMON. i meant BLOCKDATA -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
Raymond Hettinger pyt...@rcn.com writes: It doesn't seem to be common knowledge when and how a[x] gets translated to a[x+len(x)]. So, here's a short info post on how Python supports negative indices for sequences. Thanks for this. Could you post your messages using a channel that doesn't arbitrarily split your paragraphs into long-short-long-short lines? It came across fine for me as well (gmail with basic html interface). It makes paragraphs burdensome to read, and I skipped most of the message because of that. You might want to switch to a client where you do not have this problem. I encourage anyone whose messages are munged like that to seek correction from their mail service provider, and switch to a different one until it's fixed. I encourage anyone who has problems with reading various emails, newsgroup postings, forums and what not, to start using modern tools that work with the vast majority of other tools. Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: 32 bit bdist_wininst vs x64 platform
On 10/09/2010 09:52, Robin Becker wrote: .. As you mention, 32bit apps querying the registry get redirected in some cases - but so long as the 32bit bdist_wininst stub is used, that too will get redirected, so it should all work out fine. Is it possible they are attempting to install an x64 version of reportlab on a 32bit python? .. I'm a bit puzzled about this as well, they mentioned something about the python being embedded so perhaps that's the problem. I am trying to ascertain the exact context. I found out that although the end users had installed the amd64 python they were using reportlab-2.4.win32-py2.6.exe which is 32 bit. That complained until they fixed everything up by brute force registry copying. Fortunately, I don't think the pyds are importable and reportlab is robust enough to fall back to a working state even without those. -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
Re: include a file in a python program
Steven D'Aprano a écrit : On Mon, 06 Sep 2010 00:57:30 +0200, bussiere bussiere wrote: i've got a python.txt that contain python and it must stay as it (python.txt) Why? Is it against the law to change it? *wink* how can i include it in my program ? import python.txt doesn't work You could write a custom importer to handle it, but I can't help you with that. Try Google. is there a way : a) to make an include(python.txt) b) tell him to treat .txt as .py file that i can make an import python ? fp = open(python.txt) text = fp.read() fp.close() exec(text) or just: execfile(python.txt) But keep in mind that the contents of python.txt will be executed as if you had typed it yourself. If you don't trust the source with your life (or at least with the contents of your computer), don't execute it. +10 -- http://mail.python.org/mailman/listinfo/python-list
Re: inspect the call stack
bussiere bussiere a écrit : i v'e got this : i've got toto.py : import titi def niwhom(): pass and titi.py : def nipang(): pass how can i know in titi.py that's it's toto.py that is calling titi.py and the path of toto ? how can i inspect the call stack or an other way ? http://www.google.fr/search?q=python+inspect+the+call+stack First answer should point you to the relevant part of the FineManual(tm): http://docs.python.org/library/inspect.html ot And while we're at it, what about not opening a new thread for a question already partially answered ? /ot -- http://mail.python.org/mailman/listinfo/python-list
Trap Authentication Errors in HTTP Request
Hello, I have a script that authenticates to a web service provider to retrieve data. This script provides an authentication header built in a very basic way like this: code # Creates an authentication object with the credentials for a given URL def createPasswordManager(headers) : passwordManager = urllib2.HTTPPasswordMgrWithDefaultRealm() passwordManager.add_password(None,overview_url,headers[0],headers[1]) return passwordManager # Creates an authentication handler for the authentication object created above def createAuthenticationHandler(passwordManager) : authenticationHandler = urllib2.HTTPBasicAuthHandler(passwordManager) return authenticationHandler # Creates an opener that sets the credentials in the Request def createOpener(authHandler) : return urllib2.build_opener(authHandler) /code This script makes multiple calls for data. I would like to trap an exception for authentication failure so that it doesn't go through its entire list of calls when there's a problem with the login. The assumption is that if there is a login failure, the script is using incorrect authentication information. I have the call for data retrieval wrapped in try/except, to catch HTTPError, but apparently no '401' is explicitly thrown when authentication fails. And I don't see an explicit Exception that is thrown in urllib2 for handling these failures. How can I achieve my goal of trapping these exceptions and exiting cleanly? Thanks. mp -- http://mail.python.org/mailman/listinfo/python-list
How to Convert IO Stream to XML Document
I am trying to build a Python script that reads a Sitemap file and
push the URLs to a Google Search Appliance. I am able to fetch the
XML document and parse it with regular expressions but I want to move
to using native XML tools to do this. The problem I am getting is if
I use urllib.urlopen(url) I can convert the IO Stream to a XML
document but if I use urllib2.urlopen and then read the response, I
get the content but when I use minidom.parse() I get a IOError:
[Errno 2] No such file or directory: error
THIS WORKS but will have issues if the IO Stream is a compressed file
def GetPageGuts(net, url):
pageguts = urllib.urlopen(url)
xmldoc = minidom.parse(pageguts)
return xmldoc
# THIS DOESN'T WORK, but I don't understand why
def GetPageGuts(net, url):
request=getRequest_obj(net, url)
response = urllib2.urlopen(request)
response.headers.items()
pageguts = response.read()
# Test to see if the response is a gzip/compressed data stream
if isCompressedFile(response, url):
compressedstream = StringIO.StringIO(pageguts)
gzipper = gzip.GzipFile(fileobj = compressedstream)
pageguts = gzipper.read()
xmldoc = minidom.parse(pageguts)
response.close()
return xmldoc
# I am getting the following error
Starting SiteMap Manager ...
Traceback (most recent call last):
File ./tester.py, line 267, in ?
main()
File ./tester.py, line 49, in main
fetchSiteMap(ResourceDict, line)
File ./tester.py, line 65, in fetchSiteMap
pageguts = GetPageGuts(ResourceDict['NET'], url)
File ./tester.py, line 89, in GetPageGuts
xmldoc = minidom.parse(pageguts)
File /usr/lib/python2.4/xml/dom/minidom.py, line 1915, in parse
return expatbuilder.parse(file)
File /usr/lib/python2.4/xml/dom/expatbuilder.py, line 922, in
parse
fp = open(file, 'rb')
IOError: [Errno 2] No such file or directory: '?xml version=1.0
encoding=UTF-8?\nsitemapindex xmlns=http://www.sitemaps.org/
schemas/sitemap/0.9\nsitemap\nlochttp://www.myorg.org/janes/
sitemaps/binder_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/
sitemap\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
dir_sitemap.xml/loc\nlastmod2010-05-05/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
mags_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
news_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
sent_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
srep_sitemap.xml/loc\nlastmod2001-05-04/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/yb_sitemap.xml/
loc\nlastmod2010-09-09/lastmod\n/sitemap\n/sitemapindex\n'
# A couple of supporting things
def getRequest_obj(net, url):
request = urllib2.Request(url)
request.add_header('User-Agent', 'ICES Sitemap Bot dni-ices-
searchad...@ugov.gov')
request.add_header('Accept-encoding', 'gzip')
return request
def isCompressedFile(r, u):
answer=False
if r.headers.has_key('Content-encoding'):
answer=True
else:
# Check to see if the URL ends in .gz
if u.endswith(.gz):
answer=True
return answer
--
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Re: How to Convert IO Stream to XML Document
try using parse from string ... and try
minidom.parse(StringIO.StingIO(string)).documentElement
On Fri, Sep 10, 2010 at 9:50 PM, jakecjacobson jakecjacob...@gmail.comwrote:
I am trying to build a Python script that reads a Sitemap file and
push the URLs to a Google Search Appliance. I am able to fetch the
XML document and parse it with regular expressions but I want to move
to using native XML tools to do this. The problem I am getting is if
I use urllib.urlopen(url) I can convert the IO Stream to a XML
document but if I use urllib2.urlopen and then read the response, I
get the content but when I use minidom.parse() I get a IOError:
[Errno 2] No such file or directory: error
THIS WORKS but will have issues if the IO Stream is a compressed file
def GetPageGuts(net, url):
pageguts = urllib.urlopen(url)
xmldoc = minidom.parse(pageguts)
return xmldoc
# THIS DOESN'T WORK, but I don't understand why
def GetPageGuts(net, url):
request=getRequest_obj(net, url)
response = urllib2.urlopen(request)
response.headers.items()
pageguts = response.read()
# Test to see if the response is a gzip/compressed data stream
if isCompressedFile(response, url):
compressedstream = StringIO.StringIO(pageguts)
gzipper = gzip.GzipFile(fileobj = compressedstream)
pageguts = gzipper.read()
xmldoc = minidom.parse(pageguts)
response.close()
return xmldoc
# I am getting the following error
Starting SiteMap Manager ...
Traceback (most recent call last):
File ./tester.py, line 267, in ?
main()
File ./tester.py, line 49, in main
fetchSiteMap(ResourceDict, line)
File ./tester.py, line 65, in fetchSiteMap
pageguts = GetPageGuts(ResourceDict['NET'], url)
File ./tester.py, line 89, in GetPageGuts
xmldoc = minidom.parse(pageguts)
File /usr/lib/python2.4/xml/dom/minidom.py, line 1915, in parse
return expatbuilder.parse(file)
File /usr/lib/python2.4/xml/dom/expatbuilder.py, line 922, in
parse
fp = open(file, 'rb')
IOError: [Errno 2] No such file or directory: '?xml version=1.0
encoding=UTF-8?\nsitemapindex xmlns=http://www.sitemaps.org/
schemas/sitemap/0.9\nsitemap\nlochttp://www.myorg.org/janes/
sitemaps/binder_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/
sitemap\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
dir_sitemap.xml/loc\nlastmod2010-05-05/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
mags_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
news_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
sent_sitemap.xml/loc\nlastmod2010-09-09/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/
srep_sitemap.xml/loc\nlastmod2001-05-04/lastmod\n/sitemap
\nsitemap\nlochttp://www.myorg.org/janes/sitemaps/yb_sitemap.xml/
loc\nlastmod2010-09-09/lastmod\n/sitemap\n/sitemapindex\n'
# A couple of supporting things
def getRequest_obj(net, url):
request = urllib2.Request(url)
request.add_header('User-Agent', 'ICES Sitemap Bot dni-ices-
searchad...@ugov.gov')
request.add_header('Accept-encoding', 'gzip')
return request
def isCompressedFile(r, u):
answer=False
if r.headers.has_key('Content-encoding'):
answer=True
else:
# Check to see if the URL ends in .gz
if u.endswith(.gz):
answer=True
return answer
--
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--
Nitin Pawar
--
http://mail.python.org/mailman/listinfo/python-list
Ugh! Python 3.1.x and MySQL
Most of the python books coming out now are Py3K. I just started programming and have a need to access a MySQL database. I would like to use Python to do this. Unfortunately, I cannot find anyone that has created anything that allows my to do this. I've tried installing an ODBC driver and using sqlalchemy, oursql, and a few other things with no luck. So...just wondering if anyone is aware of any libraries/modules that I can use to connect to a MySQL DB using Python 3.1.x? Ideally, I'd like to be able to this from both x86 and x64 systems (if that makes any difference). Thanks for any input you may have!!! -- http://mail.python.org/mailman/listinfo/python-list
Re: SendKeys and Python 2.7
On Fri, Sep 10, 2010 at 6:26 AM, Lawrence D'Oliveiro l...@geek-central.gen.new_zealand wrote: In message mailman.600.1284026879.29448.python-l...@python.org, Jakson A. Aquino wrote: I would like to send code from Vim [1] to R [2] on Microsoft Windows. Why such a roundabout way? Why not just run R in a subprocess and feed it a script to run? Emacs with ESS runs R in a subprocess (at least I think it does). Vim can't do that. The plugin doesn't simply send code to R. It has many other features that make it easier to edit R scripts. Best, Jakson -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-ideas] Why not f(*my_list, *my_other_list) ?
On 10/09/2010 17:37, cool-RR wrote: I noticed that it's impossible to call a Python function with two starred argument lists, like this: `f(*my_list, *my_other_list)`. I mean, if someone wants to feed two lists of arguments into a function, why not? I understand why you can't have two stars in a function definition; But why can't you have two (or more) stars in a function call? Would there be any advantage over `f(*(my_list + my_other_list))`? -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-ideas] Why not f(*my_list, *my_other_list) ?
On Fri, Sep 10, 2010 at 10:52 AM, MRAB pyt...@mrabarnett.plus.com wrote: On 10/09/2010 17:37, cool-RR wrote: I noticed that it's impossible to call a Python function with two starred argument lists, like this: `f(*my_list, *my_other_list)`. I mean, if someone wants to feed two lists of arguments into a function, why not? I understand why you can't have two stars in a function definition; But why can't you have two (or more) stars in a function call? Would there be any advantage over `f(*(my_list + my_other_list))`? That fails if my_list and my_other_list are different types, whereas the *args syntax happily accepts any iterable object. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-ideas] Why not f(*my_list, *my_other_list) ?
Ian Kelly, 10.09.2010 19:03: On Fri, Sep 10, 2010 at 10:52 AM, MRABpyt...@mrabarnett.plus.com wrote: On 10/09/2010 17:37, cool-RR wrote: I noticed that it's impossible to call a Python function with two starred argument lists, like this: `f(*my_list, *my_other_list)`. I mean, if someone wants to feed two lists of arguments into a function, why not? I understand why you can't have two stars in a function definition; But why can't you have two (or more) stars in a function call? Would there be any advantage over `f(*(my_list + my_other_list))`? That fails if my_list and my_other_list are different types, whereas the *args syntax happily accepts any iterable object. But I think it's still a rare enough use case to require f(*(tuple(my_list) + tuple(my_other_list))) when you need it, although the concatenation would likely get split up and moved into an explicit variable anyway. Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: Function Point Analysis (FPA) - Equivalent lines of code of Python
On Sep 9, 2:30 am, Nicholas yue.nicho...@gmail.com wrote: Hi, In FPA, there are tables which shows equivalent lines of code for each Function Point (FP) for a number of programming languages. e.g.http://www.qsm.com/?q=resources/function-point-languages-table/index However, I have yet to find the figures for Python. Is someone able to advise the closest language equivalent. Regards Function points do not translate to lines of code except when they're standardized across a specific organization's portfolio of software. I agree with Paul, any global table trying to do that is going to be pretty bogus. John Roth -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-ideas] Why not f(*my_list, *my_other_list) ?
Ian Kelly ian.g.ke...@gmail.com writes: Would there be any advantage over `f(*(my_list + my_other_list))`? That fails if my_list and my_other_list are different types, whereas the *args syntax happily accepts any iterable object. f(*itertools.chain(my_list, my_other_list)) -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a subprocess
On Sep 9, 4:18 pm, MRAB pyt...@mrabarnett.plus.com wrote: On 09/09/2010 23:52, cerr wrote: On Sep 9, 3:29 pm, Alain Ketterlinal...@dpt-info.u-strasbg.fr wrote: cerrron.egg...@gmail.com writes: I'm calling a python script from a php script which again calls a perl script with subprocess.popen(). This seems to work fine so far only that once the python script completed it is becoming a zombie because the perl script in the background is still running... so before i exit the python script, i would need to kill my perl subprocess. How can i do so? x.terminate() (and then x.wait()) where x is the value returned by subprocess.Popen(). Well, this is what I have: writelog(starting GPS simulator) commandlist=[GPSsim,proto,GPSfile] writelog(commandlist[0]+ +commandlist[1]+ +commandlist[2]) process=subprocess.Popen(commandlist) writelog(GPS simulator started) ... ... os.kill(process.pid,9) os.wait() but this is not working for me... :( any clues? P/S: I'm not sure why the python process survives, and I think your use of zombie is not correct (afaik a zombie is an exited process whose parent hasn't called wait() yet) This is what I have: localhost cgi-bin # ps ax | grep py 11853 ? Z 0:00 [python2.6]defunct 12029 pts/1 S+ 0:00 grep --colour=auto py The 'Z' you see there stands for Zombie How about: process.kill() # New in Python 2.6 or: os.kill(process.pid, 9) then: process.wait() or: os.waitpid(process.pid, 0) HI MRAB, Thanks for your suggestion, changed my code now to: process=subprocess.Popen(commandlist) ... ... process.kill() os.waitpid(process.pid, 0) but it's not killing the process running. it still runs in the background and i don't see any errors, we're running python 2.6.4 any more clues? Thanks, Ron -- http://mail.python.org/mailman/listinfo/python-list
Re: Ugh! Python 3.1.x and MySQL
On Fri, Sep 10, 2010 at 22:27, fuglyducky fuglydu...@gmail.com wrote: Most of the python books coming out now are Py3K. I just started programming and have a need to access a MySQL database. I would like to use Python to do this. Unfortunately, I cannot find anyone that has created anything that allows my to do this. I've tried installing an ODBC driver and using sqlalchemy, oursql, and a few other things with no luck. So...just wondering if anyone is aware of any libraries/modules that I can use to connect to a MySQL DB using Python 3.1.x? Have you tried OurSQL (http://packages.python.org/oursql/)? Ideally, I'd like to be able to this from both x86 and x64 systems (if that makes any difference). Thanks for any input you may have!!! -- http://mail.python.org/mailman/listinfo/python-list -- Rami Chowdhury Never assume malice when stupidity will suffice. -- Hanlon's Razor 408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD) -- http://mail.python.org/mailman/listinfo/python-list
bool constructor is inconsistent?
IN [3]: bool('False')
Out[3]: True
In [4]: int('32')
Out[4]: 32
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Re: bool constructor is inconsistent?
Neal Becker, 10.09.2010 20:23:
IN [3]: bool('False')
Out[3]: True
Not inconsistent at all:
bool('false')
True
bool('true')
True
bool('')
False
bool(32)
True
bool(0)
False
It simply follows Python's boolean coercion rules.
If you consider it inconsisten w.r.t. int('32'), then what about
list('[]')
['[', ']']
Stefan
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Re: bool constructor is inconsistent?
On 9/10/2010 11:23 AM Neal Becker said...
IN [3]: bool('False')
Out[3]: True
In [4]: int('32')
Out[4]: 32
eval('False')
False
eval('32')
32
Otherwise, 'False' is just a string?
Emile
--
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Re: bool constructor is inconsistent?
Hi Neal,
On 2010-09-10 20:23, Neal Becker wrote:
IN [3]: bool('False')
Out[3]: True
If you consider strings, only an empty string has a false
value. So the string 'False' which is non-empty, results in
a true boolean value.
For example, you can use
if my_string:
...
to execute some code if the string is not empty.
Stefan
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Re: how to kill a subprocess
Am 10.09.2010 19:51, schrieb cerr: Thanks for your suggestion, changed my code now to: process=subprocess.Popen(commandlist) ... ... process.kill() os.waitpid(process.pid, 0) but it's not killing the process running. it still runs in the background and i don't see any errors, we're running python 2.6.4 any more clues? It's not an issue with your Python process but with its parent process. The parent process has to call the OS's waitpid() function with the PID of the Python process in order to reap it. Please show us how you are starting and controlling the Python process in your PHP code. Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a subprocess
On Sep 10, 11:45 am, Christian Heimes li...@cheimes.de wrote: Am 10.09.2010 19:51, schrieb cerr: Thanks for your suggestion, changed my code now to: process=subprocess.Popen(commandlist) ... ... process.kill() os.waitpid(process.pid, 0) but it's not killing the process running. it still runs in the background and i don't see any errors, we're running python 2.6.4 any more clues? It's not an issue with your Python process but with its parent process. The parent process has to call the OS's waitpid() function with the PID of the Python process in order to reap it. Please show us how you are starting and controlling the Python process in your PHP code. But I wanna kill the child process I start from my python code. It's like PHP - Python - Perl and when the connection PHP - Python seems to work well! -- http://mail.python.org/mailman/listinfo/python-list
3D cube navigation
hi, i need to make a 3d cube as a navigation menu.. each face having separate button .. or effect. any idea, how can i make one such 3D figures with functionality of mouse events? -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a subprocess
Am 10.09.2010 20:56, schrieb cerr: But I wanna kill the child process I start from my python code. It's like PHP - Python - Perl and when the connection PHP - Python seems to work well! You have said that the Python process becomes a zombie process. This clearly tells me that the issue is in your PHP script. See http://en.wikipedia.org/wiki/Fork-exec Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: bool constructor is inconsistent?
On Fri, Sep 10, 2010 at 2:35 PM, Stefan Schwarzer
sschwar...@sschwarzer.net wrote:
Hi Neal,
On 2010-09-10 20:23, Neal Becker wrote:
IN [3]: bool('False')
Out[3]: True
If you consider strings, only an empty string has a false
value. So the string 'False' which is non-empty, results in
a true boolean value.
...
I've always felt that if a humorous post needs a smiley, that it's not funny.
However, there is the risk of being misunderstood.
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Re: Ugh! Python 3.1.x and MySQL
On Sep 10, 12:27 pm, fuglyducky fuglydu...@gmail.com wrote: Most of the python books coming out now are Py3K. I just started programming and have a need to access a MySQL database. I would like to use Python to do this. Unfortunately, I cannot find anyone that has created anything that allows my to do this. I've tried installing an ODBC driver and using sqlalchemy, oursql, and a few other things with no luck. So...just wondering if anyone is aware of any libraries/modules that I can use to connect to a MySQL DB using Python 3.1.x? Ideally, I'd like to be able to this from both x86 and x64 systems (if that makes any difference). Thanks for any input you may have!!! Google found this: http://sourceforge.net/projects/mysql-python/forums/forum/70460/topic/3831691 -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a subprocess
On Sep 10, 12:18 pm, Christian Heimes li...@cheimes.de wrote: Am 10.09.2010 20:56, schrieb cerr: But I wanna kill the child process I start from my python code. It's like PHP - Python - Perl and when the connection PHP - Python seems to work well! You have said that the Python process becomes a zombie process. This clearly tells me that the issue is in your PHP script. Seehttp://en.wikipedia.org/wiki/Fork-exec No, the Perl becomes the zombie. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to kill a subprocess
Am 10.09.2010 22:14, schrieb cerr: No, the Perl becomes the zombie. How are you killing the Python process? Are you sending SIGINT, SIGTERM or SIGKILL? SIGKILL can prevent Python from running its cleanup code. Christian -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
On 9/9/2010 9:37 PM, Raymond Hettinger wrote: The docs guarantee that Python's builtin sequences implement support for negative indices ( http://docs.python.org/dev/reference/expressions.html#subscriptions The relevant paragraphs are For built-in objects, there are two types of objects that support subscription: If the primary is a mapping, the expression list must evaluate to an object whose value is one of the keys of the mapping, and the subscription selects the value in the mapping that corresponds to that key. (The expression list is a tuple except if it has exactly one item.) If the primary is a sequence, the expression (list) must evaluate to an integer. If this value is negative, the length of the sequence is added to it (so that, e.g., x[-1] selects the last item of x.) The resulting value must be a nonnegative integer less than the number of items in the sequence, and the subscription selects the item whose index is that value (counting from zero). Reading the third paragraph out of context, one can miss the restriction to built-in objects. I had assumed that the conversion using len(), when available, happened prior to the __getitem__ call. I believe I need to add the restriction in my discussion of negative indexing in my book. I would like the above rewritten something like the following: Two types of built-in objects support subscription as primaries: mappings and sequences. For built-in mappings, the For built-in sequences, the ... The second paragraph was written before defaultdict and does not apply to them. I presume that it is an extension rather than built-in class for the purpose of the Reference. Hope you all found this to be informative, Definitely. I save a copy for future reference. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
In article mailman.634.1284115580.29448.python-l...@python.org, Daniel Fetchinson fetchin...@googlemail.com wrote: Attribution missing: I encourage anyone whose messages are munged like that to seek correction from their mail service provider, and switch to a different one until it's fixed. I encourage anyone who has problems with reading various emails, newsgroup postings, forums and what not, to start using modern tools that work with the vast majority of other tools. Why? Raymond's post worked fine for me with trn3.6 -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ [on old computer technologies and programmers] Fancy tail fins on a brand new '59 Cadillac didn't mean throwing out a whole generation of mechanics who started with model As. --Andrew Dalke -- http://mail.python.org/mailman/listinfo/python-list
Re: The Samurai Principle
In message mailman.567.1283927599.29448.python-l...@python.org, Ian Kelly wrote: And returning None on failure is dangerous, because if the programmer does not take care to handle that case, the program may attempt to regard it as actual data. But None *is* actual data. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Tutor] Arguments from the command line
In message 86wrqtsxo2@aiuole.stru.polimi.it, Giacomo Boffi wrote: Lawrence D'Oliveiro l...@geek-central.gen.new_zealand writes: In message 8662yfklzu@aiuole.stru.polimi.it, Giacomo Boffi wrote: no BLOCKDATA? I think you mean COMMON. i meant BLOCKDATA BLOCKDATA is an initializer. The actual storage is allocated by COMMON. -- http://mail.python.org/mailman/listinfo/python-list
Re: SendKeys and Python 2.7
In message mailman.638.1284137343.29448.python-l...@python.org, Jakson A. Aquino wrote: On Fri, Sep 10, 2010 at 6:26 AM, Lawrence D'Oliveiro l...@geek-central.gen.new_zealand wrote: In message mailman.600.1284026879.29448.python-l...@python.org, Jakson A. Aquino wrote: I would like to send code from Vim [1] to R [2] on Microsoft Windows. Why such a roundabout way? Why not just run R in a subprocess and feed it a script to run? Emacs with ESS runs R in a subprocess (at least I think it does). Vim can't do that. Why not? The plugin doesn't simply send code to R. It has many other features that make it easier to edit R scripts. But those are editing functions, nothing to do with R. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-ideas] with statement syntax forces ugly line breaks?
In message mailman.580.1283974241.29448.python-l...@python.org, MRAB wrote: On 08/09/2010 19:07, Georg Brandl wrote: Thus spake the Lord: Thou shalt indent with four spaces. No more, no less. Four shall be the number of spaces thou shalt indent, and the number of thy indenting shall be four. Eight shalt thou not indent, nor either indent thou two, excepting that thou then proceed to four. Tabs are right out. FYI, that should be thine indenting. My/thy before a consonant, mine/thine before a vowel. Compare with a/an, which we still do. The funny thing is, that’s technically “Modern English”... -- http://mail.python.org/mailman/listinfo/python-list
Re: SendKeys and Python 2.7
On Fri, Sep 10, 2010 at 7:19 PM, Lawrence D'Oliveiro l...@geek-central.gen.new_zealand wrote: In message mailman.638.1284137343.29448.python-l...@python.org, Jakson A. Aquino wrote: On Fri, Sep 10, 2010 at 6:26 AM, Lawrence D'Oliveiro l...@geek-central.gen.new_zealand wrote: In message mailman.600.1284026879.29448.python-l...@python.org, Jakson A. Aquino wrote: I would like to send code from Vim [1] to R [2] on Microsoft Windows. Why such a roundabout way? Why not just run R in a subprocess and feed it a script to run? Emacs with ESS runs R in a subprocess (at least I think it does). Vim can't do that. Why not? I don't know how to embed R into Vim, but I would be grateful if you could explain how to do it since this could be an opportunity to improve my plugin. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Q] Function Point Analysis (FPA) - Equivalent lines of code of Python
In message 7x4odz5mr3@ruckus.brouhaha.com, Paul Rubin wrote: Nicholas yue.nicho...@gmail.com writes: http://www.qsm.com/?q=resources/function-point-languages- table/index.html That table looks pretty bogus ... Dead giveaways are the disparity between the Ada, C++ and PL/I figures, and the fact that FORTRAN scores lower than C. Plus the inclusion of HTML and Dotnet on a par with the others. And what are “Web Scripts, if not JavaScript? -- http://mail.python.org/mailman/listinfo/python-list
Re: The Samurai Principle
On 9/10/10 5:17 PM, Lawrence D'Oliveiro wrote: In messagemailman.567.1283927599.29448.python-l...@python.org, Ian Kelly wrote: And returning None on failure is dangerous, because if the programmer does not take care to handle that case, the program may attempt to regard it as actual data. But None *is* actual data. And that is exactly the reason why the Samurai Principle says to not return None when the function fails to do what it intended to do. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: 3D cube navigation
On Fri, Sep 10, 2010 at 9:10 PM, sahilsk sonukr...@gmail.com wrote: hi, i need to make a 3d cube as a navigation menu.. each face having separate button .. or effect. any idea, how can i make one such 3D figures with functionality of mouse events? In what environment, what toolkit, for what purpose? -- http://mail.python.org/mailman/listinfo/python-list
Re: Ugh! Python 3.1.x and MySQL
On 9/10/2010 12:57 PM, nn wrote: On Sep 10, 12:27 pm, fuglyduckyfuglydu...@gmail.com wrote: Most of the python books coming out now are Py3K. I just started programming and have a need to access a MySQL database. I would like to use Python to do this. Unfortunately, I cannot find anyone that has created anything that allows my to do this. I've tried installing an ODBC driver and using sqlalchemy, oursql, and a few other things with no luck. So...just wondering if anyone is aware of any libraries/modules that I can use to connect to a MySQL DB using Python 3.1.x? Ideally, I'd like to be able to this from both x86 and x64 systems (if that makes any difference). Thanks for any input you may have!!! Google found this: http://sourceforge.net/projects/mysql-python/forums/forum/70460/topic/3831691 That's progress, but it's a fork of MySQLdb. Can it be checked into the MySQLdb project on SourceForge? John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: 3D cube navigation
On Sep 10, 12:10 pm, sahilsk sonukr...@gmail.com wrote: hi, i need to make a 3d cube as a navigation menu.. each face having separate button .. or effect. any idea, how can i make one such 3D figures with functionality of mouse events? omg If you have to ask, you probably are not ready for the answer! Is this a personal project, or are you satisfying a customer? If the latter, is it a desktop project, or a web project? If a web project, can you use a PNG of a rendered cube? Render it with PovRay (which is honestly a ton of fun to author in), then use map tags to define clicks on various faces. From here, the question arises WHY your client wants this. Must the cube rotate? Is it designed to be user hostile? Must the user rotate the cube to find the correct menu item? If you want to spend a couple weeks coding a nice learning project, you could do a rotating cube in HTML5 using the canvas control. Someone probably has an example out there, but efficient trigonometric matrix transformations in JavaScript are not for the faint of heart. If this is for the desktop, get a Python library that wraps something that wraps OpenGL or DirectX. Or just google for python 3d cube. Have fun! -- Phlip -- http://mail.python.org/mailman/listinfo/python-list
Re: Ugh! Python 3.1.x and MySQL
On Fri, 10 Sep 2010 09:27:28 -0700, fuglyducky wrote: Most of the python books coming out now are Py3K. I just started programming and have a need to access a MySQL database. I would like to use Python to do this. Unfortunately, I cannot find anyone that has created anything that allows my to do this. I've tried installing an ODBC driver and using sqlalchemy, oursql, and a few other things with no luck. So...just wondering if anyone is aware of any libraries/modules that I can use to connect to a MySQL DB using Python 3.1.x? Ideally, I'd like to be able to this from both x86 and x64 systems (if that makes any difference). You don't say what OS you're using, but if you're on a *NIX, take a look at pyodbc: http://code.google.com/p/pyodbc/ This Python module is a wrapper for unixODBC and consequently works with standard MySQL ODBC drivers. iODBC: http://www.iodbc.org/ is similar If you want something that's Windows compatible I can't help: I don't use either Windows or MySQL. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | -- http://mail.python.org/mailman/listinfo/python-list
Re: The Samurai Principle
On Sat, 11 Sep 2010 10:17:21 +1200, Lawrence D'Oliveiro wrote: In message mailman.567.1283927599.29448.python-l...@python.org, Ian Kelly wrote: And returning None on failure is dangerous, because if the programmer does not take care to handle that case, the program may attempt to regard it as actual data. But None *is* actual data. Of course it is. Which makes it hard to distinguish None used as data from None used as a signal for an exceptional case. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: 3D cube navigation
On Sat, 11 Sep 2010 01:09:00 +0200, Krister Svanlund wrote: On Fri, Sep 10, 2010 at 9:10 PM, sahilsk sonukr...@gmail.com wrote: hi, i need to make a 3d cube as a navigation menu.. each face having separate button .. or effect. any idea, how can i make one such 3D figures with functionality of mouse events? In what environment, what toolkit, for what purpose? What do you mean, what environment? Surely there's only one? The Original Poster obviously wants a 3D navigation cube for ksh under FreeBSD. *wink* -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: bool constructor is inconsistent?
On Fri, 10 Sep 2010 14:23:34 -0400, Neal Becker wrote:
IN [3]: bool('False')
Out[3]: True
In [4]: int('32')
Out[4]: 32
Where is the inconsistency? bool('False') returns the same result as for
any other non-empty string:
bool(not true)
True
bool(no)
True
bool(incorrect)
True
bool(wrong)
True
bool(Faux)
True
bool(Falsch)
True
bool(Falso)
True
bool(偽)
True
bool(Ложно)
True
Treating the string False as identical to the named global False would
be inconsistent.
--
Steven
--
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Re: SendKeys and Python 2.7
On Thu, Sep 9, 2010 at 8:24 PM, Jakson A. Aquino jaksonaqu...@gmail.com wrote:
On Thu, Sep 9, 2010 at 5:40 PM, Michel Claveau - MVP
enleverlesx_xx...@xmclavxeaux.com.invalid wrote:
Hi!
Example for send ^V (with PyWin32):
import time,win32api,win32con
win32api.keybd_event(win32con.VK_CONTROL, 0, 0, 0)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY | 0, 0)
time.sleep(0.05)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY |
win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(win32con.VK_CONTROL, 0, win32con.KEYEVENTF_KEYUP, 0)
Thank you very much! Your code solved my problem. I added some lines
to set the focus into R before the ^V and then back to Vim:
Unfortunately, I was wrong. Your code do send the ^v as expected, but
I have problem with the selection of the Windows which will receive
the ^v. The code above was OK in a Windows XP running inside
VirtualBox, but when tested in a real machine, it proved to be highly
inconsistent. Sometimes the ^v gets pasted into R, but more frequently
it is pasted into Vim itself or nowhere. Below is the complete code
that I'm using. It's a vim script. The python code is delimited by
python EOL and EOL:
function! SendToRPy(aString)
python EOL
import time
import win32api
import win32con
import win32com.client
import win32clipboard
import vim
aString = vim.eval(a:aString)
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
win32clipboard.SetClipboardText(aString)
win32clipboard.CloseClipboard()
shell = win32com.client.Dispatch(WScript.Shell)
ok = shell.AppActivate(R Console)
if ok:
win32api.keybd_event(win32con.VK_CONTROL, 0, 0, 0)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY | 0, 0)
time.sleep(0.05)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY |
win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(win32con.VK_CONTROL, 0, win32con.KEYEVENTF_KEYUP, 0)
shell.AppActivate(Vim)
else:
vim.command(call RWarningMsg('Is R running?'))
time.sleep(1)
EOL
endfunction
When R isn't running, the script correctly shows the warning message
Is R running?. Does anyone know what should I do to correctly use
the AppActivate function or is there a better approach to this
problem?
Thanks!
Jakson Aquino
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Re: 3D cube navigation
On 09/10/10 19:20, Steven D'Aprano wrote: On Sat, 11 Sep 2010 01:09:00 +0200, Krister Svanlund wrote: On Fri, Sep 10, 2010 at 9:10 PM, sahilsksonukr...@gmail.com wrote: hi, i need to make a 3d cube as a navigation menu.. each face having separate button .. or effect. In what environment, what toolkit, for what purpose? What do you mean, what environment? Surely there's only one? The Original Poster obviously wants a 3D navigation cube for ksh under FreeBSD. Drat...all my work on a 3d navigation-cube working under ProDos on the Apple ][e for naught...what am I gonna do with all these 360k 5.25 floppies now?! -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: How Python works: What do you know about support for negative indices?
Ben Finney ben+pyt...@benfinney.id.au writes: Raymond Hettinger pyt...@rcn.com writes: It doesn't seem to be common knowledge when and how a[x] gets translated to a[x+len(x)]. So, here's a short info post on how Python supports negative indices for sequences. Thanks for this. Could you post your messages using a channel that doesn't arbitrarily split your paragraphs into long-short-long-short lines? It makes paragraphs burdensome to read, and I skipped most of the message because of that. For those who think the problem may be with the recipient's software, I see the same annoying line-wrapping problems in the archived message URL:http://mail.python.org/pipermail/python-list/2010-September/1255167.html. There's been enough sidetracking of Raymond's thread, though, so that factual contribution will hopefully be my last in this thread on this issue. -- \“Choose mnemonic identifiers. If you can't remember what | `\mnemonic means, you've got a problem.” —Larry Wall | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: SendKeys and Python 2.7
On 11/09/2010 01:45, Jakson A. Aquino wrote:
On Thu, Sep 9, 2010 at 8:24 PM, Jakson A. Aquinojaksonaqu...@gmail.com wrote:
On Thu, Sep 9, 2010 at 5:40 PM, Michel Claveau - MVP
enleverlesx_xx...@xmclavxeaux.com.invalid wrote:
Hi!
Example for send ^V (with PyWin32):
import time,win32api,win32con
win32api.keybd_event(win32con.VK_CONTROL, 0, 0, 0)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY | 0, 0)
time.sleep(0.05)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY |
win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(win32con.VK_CONTROL, 0, win32con.KEYEVENTF_KEYUP, 0)
Thank you very much! Your code solved my problem. I added some lines
to set the focus into R before the ^V and then back to Vim:
Unfortunately, I was wrong. Your code do send the ^v as expected, but
I have problem with the selection of the Windows which will receive
the ^v. The code above was OK in a Windows XP running inside
VirtualBox, but when tested in a real machine, it proved to be highly
inconsistent. Sometimes the ^v gets pasted into R, but more frequently
it is pasted into Vim itself or nowhere. Below is the complete code
that I'm using. It's a vim script. The python code is delimited by
python EOL and EOL:
function! SendToRPy(aString)
python EOL
import time
import win32api
import win32con
import win32com.client
import win32clipboard
import vim
aString = vim.eval(a:aString)
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
win32clipboard.SetClipboardText(aString)
win32clipboard.CloseClipboard()
shell = win32com.client.Dispatch(WScript.Shell)
ok = shell.AppActivate(R Console)
if ok:
win32api.keybd_event(win32con.VK_CONTROL, 0, 0, 0)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY | 0, 0)
time.sleep(0.05)
win32api.keybd_event(ord('V'), 0, win32con.KEYEVENTF_EXTENDEDKEY |
win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(win32con.VK_CONTROL, 0, win32con.KEYEVENTF_KEYUP, 0)
shell.AppActivate(Vim)
else:
vim.command(call RWarningMsg('Is R running?'))
time.sleep(1)
EOL
endfunction
When R isn't running, the script correctly shows the warning message
Is R running?. Does anyone know what should I do to correctly use
the AppActivate function or is there a better approach to this
problem?
I'd add some more small sleeps to give Windows/R time to act, IYSWIM. I
learned that from experience. :-)
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Refactoring similar subclasses
I have some code that currently takes four different classes, A, B, C and D, and subclasses each of them in the same way: class MyA(A): def method(self, x): result = super(MyA, self).method(x) if result == spam: return spam spam spam return result # many more methods overloaded class MyB(B): def method(self, x): result = super(MyB, self).method(x) if result == spam: return spam spam spam return result # many more methods overloaded and so on, for MyC and MyD. There's a lot of duplicated code in there. What techniques do you suggest for reducing the code duplication? I thought about some variation of: names = MyA MyB MyC MyD.split() bases = [A, B, C, D] d = dict-of-overloaded-methods for name, base in zip(names, bases): globals()[name] = type(name, [base], d) but I'm not sure that this is a good approach, or how to inject the right arguments to super in the dict. Any suggestions or guidelines? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Hide DOS console for .pyc file
Hi Folks, For a quick testing purpose, I deliver .pyc files to my customer. I don't want the black DOS console appearing behind my GUI, but I have no idea how to do it. Somebody can help? Thanks! Cosmo -- http://mail.python.org/mailman/listinfo/python-list
default value for __init__ doesn't work
Please look at below code snippet:
class test():
def __init__(self, a, dic={}):
self.a = a
self.dic = dic
print('__init__ params:',a, dic)
def get(self):
self.dic[1] = 2
self.dic[4] = 5
def foo():
print('in foo function')
bar = test(1)
bar.get()
if __name__ == '__main__':
foo()
foo()
---
Result:
in foo function
__init__ params: 1 {}
in foo function
__init__ params: 1 {1: 2, 4: 5}
But my expect result is :
in foo function
__init__ params: 1 {}
in foo function
__init__ params: 1 {}
it seems that the default value for dic doesn't work on the second
call for the class test.
It's wired. Who can give a explaination for this scenario?
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Re: How to Convert IO Stream to XML Document
jakecjacobson, 10.09.2010 18:20: response = urllib2.urlopen(request) pageguts = response.read() xmldoc = minidom.parse(pageguts) Check the minidom docs, there's a parseString() function that does what it says. Also, don't forget to take a look at xml.etree.ElementTree. Depending on what you want to do with the XML result, it'll likely be easier to use and faster than minidom. The function there is called fromstring(), just in case ;) Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: default value for __init__ doesn't work
On Sat, Sep 11, 2010 at 12:38 AM, 人言落日是天涯，望极天涯不见家 kelvin@gmail.com wrote:
Please look at below code snippet:
class test():
def __init__(self, a, dic={}):
self.a = a
self.dic = dic
print('__init__ params:',a, dic)
This is a pretty popular mistake to make. Default arguments aren't
evaluated when you call the method. They're created when the method is
created (meaning when you first run the file and the class itself is
defined), and that's it. Because you do self.dic = dic, this means
that every instance of the object will receive the same dict object.
Change it for one object, and the change will show up in all of them.
The solution to this is to use a sentinel value, like None
def __init__(self, a, dic=None) :
if dic is None :
self.dic = {}
else :
self.dic = dic
If None is a valid value for the parameter, make a sentinel object and use that
sentinel = object()
def __init__(self, a, dic=sentinel) :
if dic is sentinel : #you want to use is here, not ==
...
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[issue9503] print statement hangs Windows service
Amaury Forgeot d'Arc amaur...@gmail.com added the comment: Closing as a duplicate of issue706263. Instead of changing all print statements, you could set sys.stdout to another file, for example: sys.stdout=StringIO() or another object that simply discards written data. -- nosy: +amaury.forgeotdarc resolution: - duplicate status: open - closed superseder: - print raises exception when no console available ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9503 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9318] Py3k compilation on old MSVC
Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp added the comment: Patch for import.c was checked in (#9752), so last piece is just patch for Include/pythread.h. I'll commit this near future. I believe this is not problematic. -- assignee: - ocean-city ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9318 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9815] test_tarfile sometimes ends with error Cannot remoe dir
New submission from Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp: I noticed regrtest claimed it cannot delete folder after test_tarfile ran. It was like this. Traceback (most recent call last): File e:\python-dev\py3k\lib\runpy.py, line 160, in _run_module_as_main __main__, fname, loader, pkg_name) File e:\python-dev\py3k\lib\runpy.py, line 73, in _run_code exec(code, run_globals) File e:\python-dev\py3k\lib\test\test_tarfile.py, line 1566, in module test_main() File e:\python-dev\py3k\lib\test\test_tarfile.py, line 1563, in test_main shutil.rmtree(TEMPDIR) File e:\python-dev\py3k\lib\shutil.py, line 283, in rmtree onerror(os.remove, fullname, sys.exc_info()) File e:\python-dev\py3k\lib\shutil.py, line 281, in rmtree os.remove(fullname) WindowsError: [Error 32] プロセスはファイルにアクセスできません。別のプロセスが 使用中です。: 'E:\\python~1\\py3...@test_5276_tmp\\tmp.tar' # It says Process cannot access the file. Another process is using it. I tried to reproduce this by running test_tarfile alone, but failed. But I succeeded to do it with following command. py3k -m test.regrtest test_capi test_tarfile (Probably there is timing problem like GC... The reason why I think so is below) I think _Stream object left opened after exception occured in (even after returned from function Tarfile#open) because it lives in stack frame. Because t._extfileobj is True by default, TarFile object won't close it explicitly. -- components: Extension Modules files: py3k_fix_tarfile.patch keywords: patch messages: 115984 nosy: ocean-city priority: normal severity: normal status: open title: test_tarfile sometimes ends with error Cannot remoe dir versions: Python 3.1, Python 3.2 Added file: http://bugs.python.org/file18815/py3k_fix_tarfile.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9815 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9815] test_tarfile sometimes ends with error Cannot remoe dir
Changes by Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp: -- stage: - commit review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9815 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9816] random.jumpahead and PRNG sequence independence
New submission from Joseph Schaeffer thir...@gmail.com: Reading the Python 2.6 docs, it appeared that using random.jumpahead would allow the initialization of several generators with the same seed but having much different internal states. While the resulting PRNG appear to have different internal states, the produced random numbers [via .random()] are exactly the same after a small initial segment. Attached is some example code which shows the first point at which they all agree - in my testing (Mac OS X, Python versions 2.5, 2.6, 2.7) the generated numbers all agreed on the 12th number generated. For smaller differences in jumpahead it was noticeable a lot earlier - n=1,2 differ only in the first sample from each. The internal state of the PRNGs is indeed different even after the successive sampling, so it may be that this is intended - however if so the docs may cause confusion: my particular case was where I need random numbers for a stochastic markov process and in addition needed many such generators [one for each trajectory] and was hoping to use random.jumpahead to have indepedent PRNG's without having to generate [and prove] my own independent set of seeds. Thus having a long sequence of non-independent random numbers near the initial start condition causes random.jumpahead to be unusable for my situation. It appears that Python 3.1 removed random.jumpahead - if so, it may be useful to note in the 2.6 docs why this was / the issues with random.jumpahead: reading how it changed after 2.3 made it sound like it was exactly what I wanted. Possible cause: I suspect the issue may be related to how a Mersenne Twister algorithm can take a while to recover from poor seeding (excessive 0's), but do not know enough to explore that idea. -- components: Library (Lib) files: random_test.py messages: 115985 nosy: Joseph.Schaeffer priority: normal severity: normal status: open title: random.jumpahead and PRNG sequence independence type: behavior versions: Python 2.5, Python 2.6, Python 2.7 Added file: http://bugs.python.org/file18816/random_test.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9816 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9808] Implement os.getlogin on Windows
Changes by Giampaolo Rodola' g.rod...@gmail.com: -- nosy: +giampaolo.rodola ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9808 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9816] random.jumpahead and PRNG sequence independence
Changes by Ned Deily n...@acm.org: -- nosy: +rhettinger versions: -Python 2.5, Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9816 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9816] random.jumpahead and PRNG sequence independence
Changes by Raymond Hettinger rhettin...@users.sourceforge.net: -- assignee: - rhettinger priority: normal - low ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9816 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9817] expat copyright/license file is missing
New submission from Matthias Klose d...@debian.org: files in Modules/expat reference a file COPYING for the copyright/license, but this is file is not included in the Python sources. Proposing to add the attached file, taken from the expat sources. -- assignee: doko components: None files: COPYING messages: 115986 nosy: doko priority: normal severity: normal status: open title: expat copyright/license file is missing versions: Python 2.7, Python 3.1, Python 3.2 Added file: http://bugs.python.org/file18817/COPYING ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9817 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue941346] AIX shared library fix
Sébastien Sablé sa...@users.sourceforge.net added the comment: Antoine, I tested this patch on py3k with both gcc and xlc in static and shared mode and I did not notice any issue. I attach the build and test logs. I think you can safely commit it. -- Added file: http://bugs.python.org/file18818/py3k_aix61_static_xlc_nopatch.txt.gz ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue941346 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue941346] AIX shared library fix
Changes by Sébastien Sablé sa...@users.sourceforge.net: Added file: http://bugs.python.org/file18819/py3k_aix61_static_xlc_patchshared.txt.gz ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue941346 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue941346] AIX shared library fix
Changes by Sébastien Sablé sa...@users.sourceforge.net: Added file: http://bugs.python.org/file18820/py3k_aix61_shared_xlc_pathshared.txt.gz ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue941346 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue941346] AIX shared library fix
Changes by Sébastien Sablé sa...@users.sourceforge.net: Added file: http://bugs.python.org/file18821/py3k_aix61_static_gcc_patchshared.txt.gz ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue941346 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue941346] AIX shared library fix
Changes by Sébastien Sablé sa...@users.sourceforge.net: Added file: http://bugs.python.org/file18822/py3k_aix61_shared_gcc_patchshared.txt.gz ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue941346 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9818] build files to build Lib/distutils/command/wininst-9.0* are missing
New submission from Matthias Klose d...@debian.org: PC/V[CS]* contain the information to build the wininst-[678]* files, but I don't see any information how to build wininst-9.0*. -- components: Build messages: 115988 nosy: doko priority: normal severity: normal status: open title: build files to build Lib/distutils/command/wininst-9.0* are missing versions: Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9818 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9706] ssl errors checking
Changes by Giampaolo Rodola' g.rod...@gmail.com: -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9706 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
New submission from Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp:
Hello. I noticed test suite reports WARNING every time.
///
E:\python-devpy3k -m test.regrtest test_os
WARNING: The filename '@test_464_tmp-共有される' CAN be encoded by the filesyste
m encoding (mbcs). Unicode filename tests may not be effective
(snip)
///
This happens because TESTFN_UNICODE_UNDECODABLE in Lib/test/support.py
*is* decodable on Japanese environment (cp932).
It is easy to make this really undecodable in Japanese.
Using the characters like \u2661 or \u2668 (Former is heart mark,
latter is Onsen - Hot spring mark) I could remove the warning by this.
TESTFN_UNENCODABLE = TESTFN + -\u5171\u6709\u3055\u308c\u308b\u2661\u2668
///
And another issue. This happens only on test_unicode_file,
///
E:\python-devpy3k -m test.test_unicode_file
Traceback (most recent call last):
File e:\python-dev\py3k\lib\test\test_unicode_file.py, line 12, in module
TESTFN_UNICODE.encode(TESTFN_ENCODING)
UnicodeEncodeError: 'mbcs' codec can't encode characters in position 0--1: inval
id character
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File e:\python-dev\py3k\lib\runpy.py, line 160, in _run_module_as_main
__main__, fname, loader, pkg_name)
File e:\python-dev\py3k\lib\runpy.py, line 73, in _run_code
exec(code, run_globals)
File e:\python-dev\py3k\lib\test\test_unicode_file.py, line 16, in module
raise unittest.SkipTest(No Unicode filesystem semantics on this platform.)
unittest.case.SkipTest: No Unicode filesystem semantics on this platform.
///
This happens because TESTFN_UNICODE cannot be encoded in Japanese.
E:\python-devpy3k
Python 3.2a2+ (py3k:84663M, Sep 10 2010, 13:24:41) [MSC v.1400 32 bit (Intel)] o
n win32
Type help, copyright, credits or license for more information.
print(-\xe0\xf2)
Traceback (most recent call last):
File stdin, line 1, in module
UnicodeEncodeError: 'cp932' codec can't encode character '\xe0' in position 1: i
llegal multibyte sequence
But interesting, this bytes sequence \xe0\xf2 can be read as
cp932 multibyte characters.
E:\python-devpython
Python 2.6.6 (r266:84297, Aug 24 2010, 18:46:32) [MSC v.1500 32 bit (Intel)] on
win32
Type help, copyright, credits or license for more information.
print \xe0\xf2
瑣
\xe0\xf2.decode(cp932)
u'\u7463'
E:\python-devpy3k
Python 3.2a2+ (py3k:84663M, Sep 10 2010, 13:24:41) [MSC v.1400 32 bit (Intel)] o
n win32
Type help, copyright, credits or license for more information.
print('\u7463')
瑣
I believe this value \xe0\xf2 came from python2.x, maybe \u7463
should be used here? I'm not sure it can be decoded everywhere using
other encodings, though.
--
components: Tests, Unicode
messages: 115989
nosy: ocean-city
priority: normal
severity: normal
status: open
title: TESTFN_UNICODE and TESTFN_UNDECODABLE
versions: Python 3.1, Python 3.2
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[issue9816] random.jumpahead and PRNG sequence independence
Raymond Hettinger rhettin...@users.sourceforge.net added the comment: Thanks for the report. Something does appear to be broken. When the states are different, the random numbers should be different. Am looking in to it. In the mean time, I recommend against using jumpahead() with MT. It is better to separately seed three different generators and rely on the huge period of MT to keep the sequences from overlapping. If you do use jumpahead(), it is intended to be supplied with large values of n (not 1, 11, or 21). The function/method was removed in 3.x because it was an API defect. The jumpahead concept as originally intended (move ahead n-steps) was something that could really only work with a generator like Wichmann-Hill. Newer and more advanced generators aren't usually amenable to direct computation of a state that is n-steps forward. -- priority: low - high ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9816 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp added the comment: And one little thing. I noticed variable name varies in python2.x and python3.x. TESTFN_UNICODE_UNDECODEABLE (2.x) TESTFN_UNICODE_UNDECODABLE (3.x) I think 2.x should be unified into 3.x name. Thanks. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
Changes by Amaury Forgeot d'Arc amaur...@gmail.com: -- assignee: - haypo nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9806] no need to try loading posix extensions without SOABI
Georg Brandl ge...@python.org added the comment: I'm not in favor of this change. PEP 3179 was accepted because it presented an optional additional feature that doesn't break compatibility. For example, build tools of third-party external modules that do not use distutils would break. -- nosy: +benjamin.peterson, georg.brandl, loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9806 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9806] no need to try loading posix extensions without SOABI
Georg Brandl ge...@python.org added the comment: Martin might be able to provide some insight from when (IIRC) Windows dynamic DLLs were restricted to .pyd extension only. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9806 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
STINNER Victor victor.stin...@haypocalc.com added the comment: WARNING: The filename '@test_464_tmp-共有される' CAN be encoded by (...) cp932 We should find character not encodable in any Windows code page, but accepted as filenames. characters like \u2661 or \u2668 (...) mbcs uses ANSI code pages: cp1250..cp1258 and cp874 (and maybe others because you wrote that your setup uses cp932): http://en.wikipedia.org/wiki/Code_page#Windows_.28ANSI.29_code_pages I wrote a short script to find a unencodable filename (attached to this issue). Output: u'\u0301' is encodable to cp1258 u'\u0363' is not encodable to any code page u'\u2661' is encodable to cp949 u'\u5171' is encodable to cp932, cp936, cp949, cp950 (CODE_PAGES constant of the script might be incomplete) u'\u2661' is not a good candidate. u'\u0363' looks better. Be we can mix different characters to limit the probability that the whole string is encodable. Example: u'\u2661\u5171' is encodable to cp949 u'\u0301\u0363\u2661\u5171' is not encodable to any code page TESTFN_UNICODE_UNDECODEABLE (2.x) This is a typo fixed by r83987 in py3k. -- Added file: http://bugs.python.org/file18823/find_unencode_filename.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9820] Windows : os.listdir(b'.') doesn't raise an error for unencodable filenames
New submission from STINNER Victor victor.stin...@haypocalc.com:
In Python 3.2, mbcs encoding (default filesystem encoding on Windows) is now
strict: raise an error on unencodable/undecodable characters/bytes. But
os.listdir(b'.') encodes unencodable bytes as b'?'.
Example:
os.mkdir('listdir')
open('listdir\\xxx-\u0363', 'w').close()
filename = os.listdir(b'listdir')[0]
filename
b'xxx-?'
open(filename, 'r').close()
IOError: [Errno 22] Invalid argument: 'xxx-?'
os.listdir(b'listdir') should raise an error (and not ignore the filename or
replaces unencodable characters by b'?').
I think that we should list the directory using the wide character API
(FindFirstFileW) but encode the filename using PyUnicode_EncodeFSDefault() if
the directory name type is bytes, instead of using the ANSI API
(FindFirstFileA).
--
components: Library (Lib), Unicode, Windows
messages: 115995
nosy: haypo, loewis
priority: normal
severity: normal
status: open
title: Windows : os.listdir(b'.') doesn't raise an error for unencodable
filenames
versions: Python 3.2
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[issue9820] Windows : os.listdir(b'.') doesn't raise an error for unencodable filenames
STINNER Victor victor.stin...@haypocalc.com added the comment: I found this bug while trying to find an unencodable filename for #9819 (TESTFN_UNDECODABLE). Anyway, the bytes API should be avoided on Windows since Windows native filename type is unicode. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9820 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
STINNER Victor victor.stin...@haypocalc.com added the comment: See also #9820. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9816] random.jumpahead and PRNG sequence independence
Raymond Hettinger rhettin...@users.sourceforge.net added the comment: I see the problem now. Random.jumpahead(n) does a very poor job of shuffling MT's state when n is small. The first few numbers of the state are different but some of the later ones are not. When random() crawls across parts of the state that are identical, it produces identical output. Later when has wrapped around, the random() calls diverge again. Fixed by salting the jumpahead value. See r84665. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9816 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp added the comment: Thank you for a reply. u'\u2661' is encodable to cp949 Doh! I can imagine it's difficult to find out such character. ;-) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9819] TESTFN_UNICODE and TESTFN_UNDECODABLE
Hirokazu Yamamoto ocean-c...@m2.ccsnet.ne.jp added the comment: I also confirmed '\u0363' can be used as filename. dir command cannot print filename correctly, though. E:\python-dev\foo のディレクトリ 2010/09/10 19:44 DIR . 2010/09/10 19:44 DIR .. 2010/09/10 19:443 ͣ 1 個のファイル 3 バイト 2 個のディレクトリ 2,788,741,120 バイトの空き領域 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9819 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9821] Support PEP 383 on Windows: mbcs support of surrogateescape error handler
New submission from STINNER Victor victor.stin...@haypocalc.com: It would be nice to support PEP 383 (surrogateescape) on Windows, but the mbcs codec doesn't support it for performance reason. The Windows functions to encode/decode MBCS don't give the index of the unencodable/undecodable character/byte. For encoding, we can try to encode character by character (but be careful of surrogate pairs) and check that the character is a Python lone surrogate character or not (character in range U+DC80..U+DCFF). For decoding, it is more complex because MBCS can be a multibyte encoding, eg. cp65001 (Microsoft variant of utf-8, see #6058). So it's not possible to encode byte per byte and we should write an heuristic to guess the right number of bytes for each call to the decode function. -- A completly different solution is to get the MBCS code page and use the Python code page codec (eg. cp1252) instead of mbcs encoding, because Python cp codecs support all Python error handlers. Example (with Python 2.6): print(uabcŁdef.encode(cp1252, replace)) abc?def print(uabcŁdef.encode(cp1252, ignore)) abcdef print(uabcŁdef.encode(cp1252, backslashreplace)) abc\u0141def See also #8611 for the problem if the Python path cannot be encoded to mbcs (work in progress, see #9425). -- components: Interpreter Core, Library (Lib), Unicode, Windows messages: 116001 nosy: haypo, loewis priority: normal severity: normal status: open title: Support PEP 383 on Windows: mbcs support of surrogateescape error handler versions: Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9821 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9820] Windows : os.listdir(b'.') doesn't raise an error for unencodable filenames
STINNER Victor victor.stin...@haypocalc.com added the comment: os.listdir(b'listdir') should raise an error (and not ignore the filename or replaces unencodable characters by b'?'). To avoid the error, a solution is to support the PEP 383 on Windows (for the mbcs encoding). I opened a separated issue for that: #9821. But support PEP 383 will not fix this issue because the current implementation of listdir(b'.') doesn't use the Python codec, but use raw bytes filenames (use the ANSI API). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9820 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
