Unicode, stdout, and stderr
Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined It seems that there is a difference between writing to stdout and writing to stderr. My questions are - 1. What is the difference? 2. Is there an easy way to get stdout to behave the same as stderr? Thanks Frank Millman -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
Monte Milanuk memila...@invalid.com writes: On 2014-07-21, Lele Gaifax l...@metapensiero.it wrote: Monte Milanuk memila...@invalid.com writes: How hard was it to migrate from a desktop app to what you have now? Well, basically I rewrote everything, there's nothing in common. The original application was written in Delphi, using Paradox tables, no i18n, no multiuser, no PDF printouts... On the other hand, with Python is far easier to get something working, and databasing with SQLAlchemy is a pleasure. On the frontend, ExtJS is impressive, even if it has its own drawbacks. Any hints/opinions on what those drawbacks might be? I know literally almost nothing about JS. I worked thru a short generic tutorial a couple years ago, but nothing like these libraries I see people talking about now like jquery, angular, ext, and so on. Hence my hesitation at adding another learning curve on top of python and the various libraries needed for this first 'real' project. I completely agree with Roy on the language itself, it has several tricky parts that require some training to learn how to avoid, defects that are inherent to language and to the syntax, that no framework or library can really eliminate. There is a very good book by Douglas Crockford, JS: the good parts that I recommend reading. On the framework, ExtJS is the one I know better and its quite good and powerful: it has a dual license, GPL for free software projects and a commercial version, very good documentation and a lot of users. My main complaint is about their (Sencha's) release policy which frankly sucks, on both sides (free and commercial): they do not have a clear roadmap, you report bugs in a forum and from then on you cannot know if and when the bug gets fixed, or even released. They do not promise any kind of backward compatibility, and several times they irremediably broke the internal implementation of a few widgets I used from one minor version to the next and eventually released a proper fix only for the commercial version. They assert to have an extensive suite of unit and functional tests, but sometime I have the doubt they do not run it as often as one would expect :-) On the other hand, it has good and extensive examples, so the learning curve is not so steep (I'm clearly biased here, but I introduced several young developers to that environment and that's what they said too). Anyway, don't be scared: start on the Python side, laying down the foundations of the application, the database model, the main business logic, unit and functional tests, and so on. Any kind of frontend, be it a traditional desktop application or a web based one will build on that. ciao, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
almost nothing about JS. I worked thru a short generic tutorial a couple Please check Pyjs and Python with flash in http://pyjs.org/examples/Space.html for the front end part of GUI under a browser. -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman fr...@chagford.com writes: Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined No, both statements actually emit noise on the standard output, but the former prints the *repr* of the string, the latter tries to encode it to CP437, which you console seems to be using. One approach could be changing the code page (that is, the encoding) of the terminal (see the chcp command), to select one that actually have that glyph. But I'm really guessing here... ciao, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
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Re: Network/multi-user program
CHIN Dihedral dihedral88...@gmail.com writes: almost nothing about JS. I worked thru a short generic tutorial a couple Please check Pyjs and Python with flash in http://pyjs.org/examples/Space.html for the front end part of GUI under a browser. Yes, that's an option: I used Pyjamas (btw, did it survive the schism?) to build one non trivial application, and while it allows using the language we all know and love, it introduces one more step of indirection between you and the actual code that the browser run, so in the end I didn't repeat the experience. ciao, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
On Tue, 22 Jul 2014 08:18:08 +0200, Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' What makes you think it uses stderr? To the best of my knowledge, it uses stdout. print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined I think your problem is that print tries to encode the string to your terminal's encoding, which appears to be CP-437 (MS DOS code page). Can you convince cmd.exe to use UTF-8? That should fix the problem. (Although apparently Window's handling of UTF-8 is buggy, so it will create many wonderful new problems, yay!) http://stackoverflow.com/questions/388490/unicode-characters-in-windows-command-line-how http://stackoverflow.com/questions/14109024/how-to-make-unicode-charset-in-cmd-exe-by-default http://superuser.com/questions/269818/change-default-code-page-of-windows-console-to-utf-8 It seems that there is a difference between writing to stdout and writing to stderr. I would be surprised if that were the case, but I don't have a Windows box to test it. Try this: import sys print(x, file=sys.stderr) # I expect this will fail print(repr(x), file=sys.stdout) # I expect this will succeed -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Lele Gaifax l...@metapensiero.it wrote in message news:87lhrl28ie.fsf@nautilus.nautilus... Frank Millman fr...@chagford.com writes: Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined No, both statements actually emit noise on the standard output, but the former prints the *repr* of the string, the latter tries to encode it to CP437, which you console seems to be using. Thanks, Lele, but I don't think that is quite right - see my separate response to Steven Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Steven D'Aprano st...@pearwood.info wrote in message news:53ce0b96$0$29897$c3e8da3$54964...@news.astraweb.com... On Tue, 22 Jul 2014 08:18:08 +0200, Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' What makes you think it uses stderr? To the best of my knowledge, it uses stdout. This is from the docs on sys.stdxxx sys.stdin sys.stdout sys.stderr File objects used by the interpreter for standard input, output and errors: - stdin is used for all interactive input (including calls to input()); - stdout is used for the output of print() and expression statements and for the prompts of input(); - The interpreter's own prompts and its error messages go to stderr. It seems that there is a difference between writing to stdout and writing to stderr. I would be surprised if that were the case, but I don't have a Windows box to test it. Try this: import sys print(x, file=sys.stderr) # I expect this will fail It does not fail. print(repr(x), file=sys.stdout) # I expect this will succeed It fails. The clue that led me to stderr is that the logging module displays unicode strings to the console without a problem. I delved into the source code, and found that it writes to stderr. When I changed mine to stderr, it also worked. Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' No, both print to stdout, but just x is passed to the display hook of the interactive interpreter. This applies repr() and then tries to print the result. If this fails it makes another effort, roughly (the actual code is written in C) sys.stdout.buffer.write(repr(x).encode( sys.stdout.encoding, backslashreplace)) print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined It seems that there is a difference between writing to stdout and writing to stderr. My questions are - 1. What is the difference? 2. Is there an easy way to get stdout to behave the same as stderr? You could set the PYTHONIOENCODING environment variable with an error handler: [simulating the behaviour you are seeing on a linux/utf-8 machine] $ PYTHONIOENCODING=cp437 python3.4 Python 3.4.0rc1+ (default:16384988a526+, Mar 11 2014, 16:56:15) [GCC 4.8.1] on linux Type help, copyright, credits or license for more information. \u2112 '\u2112' print(\u2112) Traceback (most recent call last): File stdin, line 1, in module File /usr/local/lib/python3.4/encodings/cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2112' in position 0: character maps to undefined [the proposed fix] $ PYTHONIOENCODING=cp437:backslashreplace python3.4 Python 3.4.0rc1+ (default:16384988a526+, Mar 11 2014, 16:56:15) [GCC 4.8.1] on linux Type help, copyright, credits or license for more information. \u2112 '\u2112' print(\u2112) \u2112 -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman fr...@chagford.com writes: No, both statements actually emit noise on the standard output, but the former prints the *repr* of the string, the latter tries to encode it to CP437, which you console seems to be using. Thanks, Lele, but I don't think that is quite right - see my separate response to Steven Maybe sent as a private message? I do not see it, neither on the newsgroup I'm reading, nor in the mailing list archives... ciao, lele. BTW: checking the mailing list, I somewhat appreciate that the usual unicode spam(mer) doesn't reach the newsgroup anymore... :-) -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman fr...@chagford.com writes:
Steven D'Aprano st...@pearwood.info wrote in message
news:53ce0b96$0$29897$c3e8da3$54964...@news.astraweb.com...
I would be surprised if that were the case, but I don't have a Windows
box to test it. Try this:
import sys
print(x, file=sys.stderr) # I expect this will fail
It does not fail.
Effectively it does not, but for some reason it actually print the
repr() of the string.
print(repr(x), file=sys.stdout) # I expect this will succeed
It fails.
This surprises me as well, why does it fail here?
repr('\u2119')
'\u2119'
print(repr('\u2119'))
Traceback ... UnicodeEncodeError ...
On GNU/Linux, I get:
repr('\u2119')
'ℙ'
print(repr('\u2119'))
'ℙ'
Uhm, it must be related to the fact that on Py3 the repr() of something
is a unicode object too, so the output machinery tries to encode it to
the output encoding Still, I miss the difference between stdout and
stderr (both are cp437, accordingly to sys.xxx.encoding).
ciao, lele.
--
nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri
real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
l...@metapensiero.it | -- Fortunato Depero, 1929.
--
https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Lele Gaifax l...@metapensiero.it wrote in message news:87d2cx271o.fsf@nautilus.nautilus... Frank Millman fr...@chagford.com writes: No, both statements actually emit noise on the standard output, but the former prints the *repr* of the string, the latter tries to encode it to CP437, which you console seems to be using. Thanks, Lele, but I don't think that is quite right - see my separate response to Steven Maybe sent as a private message? I do not see it, neither on the newsgroup I'm reading, nor in the mailing list archives... I can see it on gmane. Maybe just give it some time. Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Peter Otten __pete...@web.de writes: No, both print to stdout, but just x is passed to the display hook of the interactive interpreter. This applies repr() and then tries to print the result. If this fails it makes another effort, roughly (the actual code is written in C) sys.stdout.buffer.write(repr(x).encode( sys.stdout.encoding, backslashreplace)) Ah-moment! Thanks, ciao, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Peter Otten __pete...@web.de wrote in message news:lql3am$2q7$1...@ger.gmane.org... Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' No, both print to stdout, but just x is passed to the display hook of the interactive interpreter. This applies repr() and then tries to print the result. If this fails it makes another effort, roughly (the actual code is written in C) sys.stdout.buffer.write(repr(x).encode( sys.stdout.encoding, backslashreplace)) Thanks, Peter. Very interesting. Out of interest, does the same thing happen when writing to sys.stderr? Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
On 2014-07-22, Lele Gaifax l...@metapensiero.it wrote: On the other hand, it has good and extensive examples, so the learning curve is not so steep (I'm clearly biased here, but I introduced several young developers to that environment and that's what they said too). Any experience with angular js? Browsing the web showed a few mentions of it vs. ext js. Mostly I'm still at the curious stage on this... either one is completely foreign to anything I've done before. Anyway, don't be scared: start on the Python side, laying down the foundations of the application, the database model, the main business logic, unit and functional tests, and so on. Any kind of frontend, be it a traditional desktop application or a web based one will build on that. Well... thats part of where my lack of experience with js or complex projects using anything other than just python is going to show: initially I thought javascript was just for buttons/effects in the client browser as thats all the trivial examples I looked at years ago did. The bits n pieces I'm seeing of these 'modern' javascript MVC frameworks like sencha, angular, etc. is making me think that a lot of the 'work' is moving from the server to the client via the javascript... which just blurs the heck out of things and confuses me as to what should be in the browser and what should be on the 'server'? And where the testing goes? If more of the 'heavy lifting' is being done on the client, is there a need for a full-service python framework like django or would something lightweight like flask be more appropriate? Again, I know almost nothing about pyramid and where it falls into the mix. I can read the propaganda on their respective web sites, but that is necessarily skewed. :/ Monte -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
Monte Milanuk memila...@invalid.com writes: On 2014-07-22, Lele Gaifax l...@metapensiero.it wrote: On the other hand, it has good and extensive examples, so the learning curve is not so steep (I'm clearly biased here, but I introduced several young developers to that environment and that's what they said too). Any experience with angular js? Browsing the web showed a few mentions of it vs. ext js. Mostly I'm still at the curious stage on this... either one is completely foreign to anything I've done before. Very, very little. I evaluated it quickly, but then my boss at the time dictated the Pyjamas route... Anyway, don't be scared: start on the Python side, laying down the foundations of the application, the database model, the main business logic, unit and functional tests, and so on. Any kind of frontend, be it a traditional desktop application or a web based one will build on that. Well... thats part of where my lack of experience with js or complex projects using anything other than just python is going to show: initially I thought javascript was just for buttons/effects in the client browser as thats all the trivial examples I looked at years ago did. The bits n pieces I'm seeing of these 'modern' javascript MVC frameworks like sencha, angular, etc. is making me think that a lot of the 'work' is moving from the server to the client via the javascript... which just blurs the heck out of things and confuses me as to what should be in the browser and what should be on the 'server'? And where the testing goes? Yes, that is effectively the fuzzy dichotomy you'll have to deal with. From my point of view, I tend to see the JS frontend as the GUI library that I use to draw the application, and I try to keep it separate from the logic as much as I can. It does not matter if the GUI is written in JS, GTK+, curses, NeXTstep or Delphi: it has been *always* a nightmare to implement serious automatic tests on that side of all my apps, and that's the main reason I keep complicated things on the backend side. And you know, with Python even complicated things are manageable. If more of the 'heavy lifting' is being done on the client, is there a need for a full-service python framework like django or would something lightweight like flask be more appropriate? Again, I know almost nothing about pyramid and where it falls into the mix. I can read the propaganda on their respective web sites, but that is necessarily skewed. :/ Even if I used some Django apps, I never developed anything with it: it does not seem a good choice for the kind of applications I happen to write. Its main selling point is the somewhat automatic CRUD view generation, something I'm always going to implement in other ways anyway. Its main no thank you point is the hassle with its son of a minor god ORM. I started using Flask for a couple of applications that at first appeared to be very simple, but actually most of the time any application seems simple enough at first but very quickly become complicated enough to warrant a better infrastructure: after a few weeks I retargeted them to Pyramid, which I find robust, well documented and versatile. ciao, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. l...@metapensiero.it | -- Fortunato Depero, 1929. -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman wrote: Peter Otten __pete...@web.de wrote in message news:lql3am$2q7$1...@ger.gmane.org... Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' No, both print to stdout, but just x is passed to the display hook of the interactive interpreter. This applies repr() and then tries to print the result. If this fails it makes another effort, roughly (the actual code is written in C) sys.stdout.buffer.write(repr(x).encode( sys.stdout.encoding, backslashreplace)) Thanks, Peter. Very interesting. Out of interest, does the same thing happen when writing to sys.stderr? If you are asking about the fallback mechanism, that is specific to sys.displayhook in the interactive interpreter. But stdout and stderr do handle errors differently: import sys sys.stdout.errors 'strict' sys.stderr.errors 'backslashreplace' So a codepoint written to stdout that cannot be encoded with stdout.encoding raises an error while a codepoint written to stderr that cannot be encoded with stderr.encoding is escaped. Another way to make stdout more forgiving: import sys print(\u2119) Traceback (most recent call last): File stdin, line 1, in module File /usr/local/lib/python3.4/encodings/cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined sys.stdout = open(1, mode=w, errors=xmlcharrefreplace, encoding=sys.stdout.encoding, closefd=False) print(\u2119) #8473; -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
On Tue, Jul 22, 2014 at 5:54 PM, Monte Milanuk memila...@invalid.com wrote: Well... thats part of where my lack of experience with js or complex projects using anything other than just python is going to show: initially I thought javascript was just for buttons/effects in the client browser as thats all the trivial examples I looked at years ago did. The bits n pieces I'm seeing of these 'modern' javascript MVC frameworks like sencha, angular, etc. is making me think that a lot of the 'work' is moving from the server to the client via the javascript... which just blurs the heck out of things and confuses me as to what should be in the browser and what should be on the 'server'? And where the testing goes? If more of the 'heavy lifting' is being done on the client, is there a need for a full-service python framework like django or would something lightweight like flask be more appropriate? Again, I know almost nothing about pyramid and where it falls into the mix. I can read the propaganda on their respective web sites, but that is necessarily skewed. :/ Lots of things getting messed in together here, so I'm going to start right back at some basics. You probably know some of what I'm going to say already, but I'm not sure exactly how much, so I'll just say it anyway. Hopefully this won't be TOO long. :) Communication between the server and the client is over HTTP. (Usually. I'm ignoring SPDY and other protocols, and I'm also ignoring the distinction with HTTPS, which just adds an encryption layer and doesn't affect any of this.) HTTP is a stateless protocol, where the client sends a request to the server and the server sends back a response. Simple, and works really beautifully for the simple case where you just want a page. If you go to http://rosuav.com/hymns/LetHerGo2.png in your browser, it sends a request GET /hymns/LetHerGo2.png to my server, and my server responds with \x89PNG and about 100KB of PNG-encoded data, which your browser then displays as an image. So far, so good. For something more interactive, though, HTTP isn't really ideal. The server can send back a frames-based page (either with FRAME or with IFRAME), and then with links A HREF=... TARGET=... modify specific parts of that page, but it's still pretty clunky, and it's not going to look perfectly smooth. (I've built systems that do exactly this; if your use-case happens to fit this, it can work. But it's unusual to fit into that.) No, what you really want is two things: First, a way to change what's on the page without throwing it all away and fetching an entire new page; and second, a way for the browser to talk to the server without throwing away its current page and replacing it. The first one fundamentally requires client-side scripting. You have to have the server provide something executable which the client will run. And that, in itself, adds another bunch of problems (security, sandboxing, and stuff), which is why ECMAScript/JavaScript is the only properly-supported language; there've been various attempts to get another language supported across all browsers, but never successfully enough to supplant JS. And due to backward-compatibility requirements (a modern browser needs to be able to run JS code written in the 90s), the language's worst design flaws (like UTF-16 strings) simply cannot be changed. But the power is there for code to do whatever it likes to the displayed page: remove stuff, add stuff, change styles, fiddle with text, anything at all. Fortunately, the second requirement is fairly easily covered. JS code can issue additional HTTP requests to the server, and do whatever it likes with the responses. The server still does whatever it does in response to those requests, maybe some database changes or lookups, or other work that can only be done on the server. And then it can send back either preformatted HTML for the JS to insert into the page, or enough information for the JS to build the content itself. (In some cases, the server might send back nothing more than a flag saying Success or Failure, and the JS does all the rest, possibly including a retry loop.) But there's still a fundamental disconnection between the web browser and the database, which can be handled ONLY by the web server. (Technically you could let the browser talk directly to the DBMS. If you really need that, you know enough to know that I've been simplifying quite a bit of this discussion.) To keep your server-side code clean, especially as it gets bigger and more complex, you often want to make use of a web framework like Django, Flask, etc, etc, etc. You don't have to send back HTML from the server; if you have a dedicated script request endpoint, you can send back a simpler form of the information (maybe JSON, or plain text, or something), and possibly you can have uglier error checking (eg if you get the parameters wrong, it just spits back an HTTP 500 instead of courteously telling you which one you omitted -
Re: Unicode, stdout, and stderr
Peter Otten __pete...@web.de wrote in message news:lql9oi$hlt$1...@ger.gmane.org... Frank Millman wrote: [...] Out of interest, does the same thing happen when writing to sys.stderr? If you are asking about the fallback mechanism, that is specific to sys.displayhook in the interactive interpreter. But stdout and stderr do handle errors differently: import sys sys.stdout.errors 'strict' sys.stderr.errors 'backslashreplace' So a codepoint written to stdout that cannot be encoded with stdout.encoding raises an error while a codepoint written to stderr that cannot be encoded with stderr.encoding is escaped. Another way to make stdout more forgiving: import sys print(\u2119) Traceback (most recent call last): File stdin, line 1, in module File /usr/local/lib/python3.4/encodings/cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined sys.stdout = open(1, mode=w, errors=xmlcharrefreplace, encoding=sys.stdout.encoding, closefd=False) print(\u2119) #8473; That's a lot of very useful information. Thanks very much Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
On 2014-07-21 16:07:22 +, Monte Milanuk said: So I guess I'm asking for advice or simplified examples of how to go about connecting a client desktop app to a parent/master desktop app, so I can get some idea of how big of a task I'm looking at here, and whether that would be more or less difficult than trying to do the equivalent job using a web framework. For a similar need I went with a webapp using Flask and a minimal amount of js (that I don't know very well and therefore don't like very much :-) but the alternative that I considered was Dabo [1], I haven't checked how the client-server connection actually works with dabo tho' but I'm mentioning in case you're inclined to do so. For the client part and different from the usual js framework I had a brief experience with Cappuccino [2], if you happen to know Cocoa it's pretty straightforward to use. [1] http://dabodev.com/ [2] http://www.cappuccino-project.org/ -- Andrea -- https://mail.python.org/mailman/listinfo/python-list
Removing xml element and strip extra space
Hi, I am trying to play around with python and xslt. I have an xml and I want to transform it to another xml by deleting its one element. The xml is pasted below: ?xml version=1.0 encoding=UTF-8? testNode nodeInfo nodePeriod nodeTime=6/ nodeBase base=0 / /nodeInfo /testNode I want to remove the nodeBase tag and this is how my xsl file looks like: ?xml version=1.0 encoding=UTF-8? xsl:stylesheet version=1.0 xmlns:xsl= http://www.w3.org/1999/XSL/Transform; xsl:output method=xml indent=yes/ xsl:template match=@*|node() xsl:copy xsl:apply-templates select=@*|node()/ /xsl:copy /xsl:template xsl:template match=/testNode/nodeInfo/nodeBase /xsl:template /xsl:stylesheet When I execute it my output looks like this: ?xml version=1.0 encoding=UTF-8? testNode nodeInfo * nodePeriod nodeTime=6/* */nodeInfo* /testNode I want to strip the space between *nodePeriod* and */nodeInfo* Can anyone suggest a way out to do that? Thanks, BR, Varun -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml element and strip extra space
On 2014-07-22, varun bhatnagar varun292...@gmail.com wrote: I want to strip the space between *nodePeriod* and */nodeInfo* Can anyone suggest a way out to do that? Look at str.rstrip() - by default it removes trailing whitespace including carriage returns. -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml element and strip extra space
Hi, Thank you so much for the suggestion. I tried using the rstrip() function but that did not work. Still getting a blank space between *nodePeriod* and */nodeInfo *as mentioned in the above output xml file: *nodePeriod nodeTime=6/* * /nodeInfo* Is there any other way through which this can be achieved? Can't this be handled by xslt itself in some way? Thanks, BR, Varun On Tue, Jul 22, 2014 at 2:23 PM, Monte Milanuk memila...@invalid.com wrote: On 2014-07-22, varun bhatnagar varun292...@gmail.com wrote: I want to strip the space between *nodePeriod* and */nodeInfo* Can anyone suggest a way out to do that? Look at str.rstrip() - by default it removes trailing whitespace including carriage returns. -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml element and strip extra space
On Tuesday, July 22, 2014 8:53:35 AM UTC-4, varun bhatnagar wrote: Hi, Thank you so much for the suggestion. I tried using the rstrip() function but that did not work. Still getting a blank space between nodePeriod and /nodeInfo as mentioned in the above output xml file: nodePeriod nodeTime=6/ /nodeInfo Is there any other way through which this can be achieved? Can't this be handled by xslt itself in some way? Thanks, BR, Varun On Tue, Jul 22, 2014 at 2:23 PM, Monte Milanuk memi...@invalid.com wrote: On 2014-07-22, varun bhatnagar varun...@gmail.com wrote: I want to strip the space between *nodePeriod* and */nodeInfo* Can anyone suggest a way out to do that? Look at str.rstrip() - by default it removes trailing whitespace including carriage returns. -- Hi Varun, The whitespace is part of your original xml; the xslt is only preserving that whitespace. Do you have any control over the construction of that original xml? It looks like it has been tidied and whitespace perhaps added. I think you will get what you want if the original has the newlines removed: ?xml version=1.0 encoding=UTF-8? testNode nodeInfo nodePeriod nodeTime=6/nodeBase base=0 //nodeInfo /testNode does that get you what you're looking for? Is the whitespace actually necessary in the original or problematic in the result? --Tim Arnold -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml element and strip extra space
Hi Tim, Thanks for replying. No that is not the output I am looking for. I just want to scrape out nodeBase base=0 / But the way I have written my xsl file it is removing it but it is also leaving a blank space there. I want my output to look like this: *?xml version=1.0 encoding=UTF-8?testNodenodeInfonodePeriod nodeTime=6/* */nodeInfo/testNode* But in actual it is showing like this: ?xml version=1.0 encoding=UTF-8? testNode nodeInfo nodePeriod nodeTime=6/ *I want to remove this space* :) /nodeInfo /testNode On Tue, Jul 22, 2014 at 3:00 PM, Tim jtim.arn...@gmail.com wrote: On Tuesday, July 22, 2014 8:53:35 AM UTC-4, varun bhatnagar wrote: Hi, Thank you so much for the suggestion. I tried using the rstrip() function but that did not work. Still getting a blank space between nodePeriod and /nodeInfo as mentioned in the above output xml file: nodePeriod nodeTime=6/ /nodeInfo Is there any other way through which this can be achieved? Can't this be handled by xslt itself in some way? Thanks, BR, Varun On Tue, Jul 22, 2014 at 2:23 PM, Monte Milanuk memi...@invalid.com wrote: On 2014-07-22, varun bhatnagar varun...@gmail.com wrote: I want to strip the space between *nodePeriod* and */nodeInfo* Can anyone suggest a way out to do that? Look at str.rstrip() - by default it removes trailing whitespace including carriage returns. -- Hi Varun, The whitespace is part of your original xml; the xslt is only preserving that whitespace. Do you have any control over the construction of that original xml? It looks like it has been tidied and whitespace perhaps added. I think you will get what you want if the original has the newlines removed: ?xml version=1.0 encoding=UTF-8? testNode nodeInfo nodePeriod nodeTime=6/nodeBase base=0 //nodeInfo /testNode does that get you what you're looking for? Is the whitespace actually necessary in the original or problematic in the result? --Tim Arnold -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
memilanuk memila...@gmail.com writes: I'm on Ubuntu (14.04 LTS, if it matters) and I've been using Thunderbird for a lng time... I've tinkered with slrn off and on over the years, tried pan occasionally due to recommendations... but I keep ending up back @ Thunderbird. About the only thing it doesn't do that I really want is scoring/kill-files. I always thought Thuderbird was a lost cause especially with News but it has some serious issues as a mail client too. Probably part of the reason why it never caught on and development stopped. Pretty good and nice to have a cross platform thing but they kept it an island, unable to sync contacts to anything else. Well, the Mac version could at least use the Mac addressbook but on Windows and Linux it's just WTF. Slrn has those, and I do use vim on occasion so that worked well enough... but when people *do* post links or html it didn't handle that stuff gracefully like Thunderbird. I don't really know about about html and slrn since I don't see much of it but links in a terminal application is usually something for the terminal to handle. I run Gnus on a remote machine and use a local terminal for display, Konsole in Linux and mintty in Windows. In both of those terminals URLs are opened with a right click on the link and selecting open link from the menu that pops up. -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
Marko Rauhamaa ma...@pacujo.net writes: Martin S shieldf...@gmail.com: Is there a point to still use Usenet? Last time I checked noise overwhelmed signal by a factor of something close to 542. Well, here you are at URL: news:comp.lang.python, in the middle of all that noise. Besides, there's been a slight resurgence in comp.misc at least, apparently some people got angry about something at slashdot and wanted a more free forum, hence a bunch of posts there and some other groups recently. Other than that, I think most of the angry people and spammers have left Usenet alone. All the better for those of us who stick with it but I have to say the average age of people posting to comp.arch at least is probably over 60... The only younger people around seem to be the kids asking for people to do their homework. -- https://mail.python.org/mailman/listinfo/python-list
testfixtures 4.0.0 Released!
Hi All, I'm pleased to announce the release of testfixtures 4.0.0. This is a new feature release with the following major changes: - Moved from buildout to virtualenv for development. - compare() will now work recursively on data structures for which it has registered comparers, giving more detailed feedback on nested data structures. Strict comparison will also be applied recursively. - Official support for Python 3.4. The package is on PyPI and a full list of all the links to docs, issue trackers and the like can be found here: http://www.simplistix.co.uk/software/python/testfixtures Any questions, please do ask on the Testing in Python list or on the Simplistix open source mailing list... cheers, Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- https://mail.python.org/mailman/listinfo/python-list
Re: Network/multi-user program
On 2014-07-21, Roy Smith r...@panix.com wrote: The truly sucky part of this picture is that javascript is a horrible language, I'm pretty sure that the real purpose of PHP is to make javascript look like a good programming language. -- Grant Edwards grant.b.edwardsYow! RELATIVES!! at gmail.com -- https://mail.python.org/mailman/listinfo/python-list
Fastest I/O on Python ?
Is there in any other input/output faster than (raw_input,input / print) As I am trying to solve competitive Programs on codechef.com using python i was wondering if there is any other way to print and scan the inputs fast. I have seen other people codes and there are using sys library(stdin and stdout) for I/O. So I was thinking is there any other way to take input/output besides using 'sys library'. And also I had doubt about what is the difference between (raw_input,input/print) and (stdin/stdout) Thank You. -- https://mail.python.org/mailman/listinfo/python-list
Re: Fastest I/O on Python ?
On Wed, Jul 23, 2014 at 2:06 AM, Orochi kartikjagdal...@gmail.com wrote: Is there in any other input/output faster than (raw_input,input / print) As I am trying to solve competitive Programs on codechef.com using python i was wondering if there is any other way to print and scan the inputs fast. What do you mean by faster? Are you really seeing performance problems with them, or are you actually looking for something like C's printf and scanf, which do more than just output and input? The print function (use either Python 3 or a future import) has some good formatting facilities, and if you need more, you can do something like this: print(The price is $%.2f per kilo. % 1.5) The price is $1.50 per kilo. However, there's no comparable feature for input. It's generally easiest to take a string from (raw_)input and then parse it yourself, maybe with a regular expression, or splitting it on whitespace, or whatever else is appropriate. But you'll really need to explain what you're actually having issues with, before we can advise further. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Fastest I/O on Python ?
On 07/22/2014 09:06 AM, Orochi wrote: Is there in any other input/output faster than (raw_input,input / print) The limitation is with the device -- either the human typing in responses or the output device rendering the output. If you have the option to read/write to disk that'd open up additional options. Otherwise I'm not sure there's much to be gained. Emile As I am trying to solve competitive Programs on codechef.com using python i was wondering if there is any other way to print and scan the inputs fast. I have seen other people codes and there are using sys library(stdin and stdout) for I/O. So I was thinking is there any other way to take input/output besides using 'sys library'. And also I had doubt about what is the difference between (raw_input,input/print) and (stdin/stdout) Thank You. -- https://mail.python.org/mailman/listinfo/python-list
Re: Anything better than asyncio.as_completed() and asyncio.wait() to manage execution of large amount of tasks?
On Thursday, July 17, 2014 7:09:02 AM UTC+8, Maxime Steisel wrote: 2014-07-15 14:20 GMT+02:00 Valery Khamenya khame...@gmail.com: Hi, both asyncio.as_completed() and asyncio.wait() work with lists only. No generators are accepted. Are there anything similar to those functions that pulls Tasks/Futures/coroutines one-by-one and processes them in a limited task pool? Something like this (adapted from as_completed) should do the work: import asyncio from concurrent import futures def parallelize(tasks, *, loop=None, max_workers=5, timeout=None): loop = loop if loop is not None else asyncio.get_event_loop() workers = [] pending = set() done = asyncio.Queue(maxsize=max_workers) exhausted = False @asyncio.coroutine def _worker(): nonlocal exhausted while not exhausted: try: t = next(tasks) pending.add(t) yield from t yield from done.put(t) pending.remove(t) except StopIteration: exhausted = True def _on_timeout(): for f in workers: f.cancel() workers.clear() #Wake up _wait_for_one() done.put_nowait(None) @asyncio.coroutine def _wait_for_one(): f = yield from done.get() if f is None: raise futures.TimeoutError() return f.result() workers = [asyncio.async(_worker()) for i in range(max_workers)] if workers and timeout is not None: timeout_handle = loop.call_later(timeout, _on_timeout) while not exhausted or pending or not done.empty(): yield _wait_for_one() timeout_handle.cancel() Well, I think you are missing the task managers as workers in your flow of logics. I suggest a better version is with a global signal of 8 to 16 times clock of the normal worker pace in order to cope with ASYN events accordingly for the workers which colud be decorated to yield, but not in the worker's funtions. -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
Aye I found a couple of groups that are still active. Most of it seems to be a digital ghost town though. A bit sad, I was once actively involved in setting up the se. * hierarchy. /martin s On 22 Jul 2014, Anssi Saari a...@sci.fi wrote: Marko Rauhamaa ma...@pacujo.net writes: Martin S shieldf...@gmail.com: Is there a point to still use Usenet? Last time I checked noise overwhelmed signal by a factor of something close to 542. Well, here you are at URL: news:comp.lang.python, in the middle of all that noise. Besides, there's been a slight resurgence in comp.misc at least, apparently some people got angry about something at slashdot and wanted a more free forum, hence a bunch of posts there and some other groups recently. Other than that, I think most of the angry people and spammers have left Usenet alone. All the better for those of us who stick with it but I have to say the average age of people posting to comp.arch at least is probably over 60... The only younger people around seem to be the kids asking for people to do their homework. -- Sent with K-@ Mail - the evolution of emailing.-- https://mail.python.org/mailman/listinfo/python-list
Review my asyncio code
Hi, I am trying to learn how to utilize aysncio module. In order to do that, I wrote a class that checks http status codes for all the pages on a given domain (unless there is no internal link pointing to it of course). Since it is too long to paste here, I uploaded it to my github repo, you can find it here; https://github.com/yasar11732/python-scripts/blob/master/asyncio-scripts/validate_links.py I was wondering if someone could review it and give me some pointers if necessary. The parts that I especially ask for guidance is firstly how I run my tasks in lines 40-48 I am adding new tasks as I found unvisited links, in line 132. The main problem I find with my code, but can't quite fix it yet, is that run method is blocking. But if I don't use a method like that, I don't know how I would guarantee that event loop is done. I thought about making the whole RecursiveStatusChecker class a Thread, but I am not sure how would Threads and asyncio work together. My ultimate aim with a class like that was to start it at some time, and check later whether or not new results are available or all the tasks are finished. Any help is appreciated. -- http://ysar.net/ -- https://mail.python.org/mailman/listinfo/python-list
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Herion,,Actavis promethazine codeine 16oz and 32oz available Ketamine Oxycontine Hydrocodone xanax and medicated marijuana US- free shipping and other related products for sell at competitive prices.We do world wide shipping Herion,,Actavis promethazine codeine 16oz and 32oz available Ketamine Oxycontine Hydrocodone xanax and medicated marijuana US- free shipping and other related products for sell at competitive prices.We do world wide shipping to any clear address.Delivery is 100% safe due to our discreetness and experience.Try our quality and experience then have a story to tell another day. Email Address:stuffstorehouse2014 (AT) gmail.com CONTACT NUMBER: (407)-4852249 * Pleas text me only -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
On 7/22/2014 2:18 AM, Frank Millman wrote: Hi all This is not important, but I would appreciate it if someone could explain the following, run from cmd.exe on Windows Server 2003 - C:\python Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In tel)] on win32 Type help, copyright, credits or license for more information. x = '\u2119' x # this uses stderr '\u2119' print(x) # this uses stdout Traceback (most recent call last): File stdin, line 1, in module File C:\Python34\lib\encodings\cp437.py, line 19, in encode return codecs.charmap_encode(input,self.errors,encoding_map)[0] UnicodeEncodeError: 'charmap' codec can't encode character '\u2119' in position 0: character maps to undefined On Windows, at least, the Idle gui generally handles unicode (certainly the BMP) much better than the interpreter command prompt interface. x = '\u2119' x 'ℙ' print(x) ℙ -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml element and strip extra space
On 2014-07-22, varun bhatnagar varun292...@gmail.com wrote: I just want to scrape out nodeBase base=0 / But the way I have written my xsl file it is removing it but it is also leaving a blank space there. I want my output to look like this: This is the part where a certain amount of example code showing what you're doing would probably help people diagnose where the problem is... -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
Herion,,Actavis promethazine codeine 16oz and 32oz available Ketamine Oxycontine Hydrocodone xanax and medicated marijuana US- free shipping and other related products for sell at competitive prices.We do world wide shipping to any clear address.Delivery is 100% safe due to our discreetness and experience.Try our quality and experience then have a story to tell another day. Email Address:stuffstorehouse2014 (AT) gmail.com CONTACT NUMBER: (407)-4852249 * Pleas text me only -- https://mail.python.org/mailman/listinfo/python-list
ANN: Wing IDE 5.0.8 released
Hi, Wingware has released version 5.0.8 of Wing IDE, our cross-platform integrated development environment for the Python programming language. Wing IDE includes a professional quality code editor with vi, emacs, visual studio, and other key bindings, auto-completion, call tips, goto-definition, find uses, refactoring, context-aware auto-editing, a powerful graphical debugger, version control, unit testing, search, and many other features. For details see http://wingware.com/ Changes in this minor release include: Debug stack is accessible from the toolbar's Show Position icon Added Step Over Statement and Step Over Block to step through code more rapidly Added experimental selection-add-next-occurence command for creating multiple selections with next occurrences of text matching the current selection Added step-over-line command to step over current physical line Fix debugging with Stackless 2.7.8 Fix debugging 32-bit Python on OS X About 34 other bug fixes; see the change log for details For details see http://wingware.com/pub/wingide/5.0.8/CHANGELOG.txt A summary of new features in Wing 5: Native GUI on OS X and better overall OS-native look and feel Draggable tools and editors Configurable toolbar and editor project context menus Lockable editor splits and mode to open different files in each split Sharable color palettes and syntax highlighting configurations Auto-editing is on by default (except some operations that have a learning curve) Optional Python Turbo completion (context-appropriate completion on all non-symbol keys) Improved Source Assistant with PEP 287 docstring rendering and return types Move debug program counter Named file sets New Project dialog Sharable launch configurations and named entry points Asynchronous I/O in Debug Probe and Python Shell More control over unit testing environment Initial preferences dialog for new users Support for Python 3.4 and Stackless Python 2.7 and 3.3 Support for Django 1.6 Support for matplotlib on Anaconda and with MacOSX backend Support for Maya 2015, MotionBuilder 2015, Nuke 8, and Source Filmmaker Improved integrated and PDF documentation Expanded and rewritten tutorial Multiple selections Debug stepping by physical line, statement, and block For more information on what's new in Wing 5, see http://wingware.com/wingide/whatsnew Free trial: http://wingware.com/wingide/trial Downloads: http://wingware.com/downloads Feature list: http://wingware.com/wingide/features Sales: http://wingware.com/store/purchase Upgrades: https://wingware.com/store/upgrade Questions? Don't hesitate to email us at supp...@wingware.com. Thanks, -- Stephan Deibel Wingware | Python IDE The Intelligent Development Environment for Python Programmers wingware.com -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On 7/22/2014 11:14 AM, Anssi Saari wrote: I don't really know about about html and slrn since I don't see much of it but links in a terminal application is usually something for the terminal to handle. I run Gnus on a remote machine and use a local terminal for display, Konsole in Linux and mintty in Windows. In both of those terminals URLs are opened with a right click on the link and selecting open link from the menu that pops up. That is correct and the way slrn works. You set browser and/or guibrowser options in .slrnrc. With those set, SHIFT-G will troll an open message for web addresses, and you use up and down arrow to select the link you want from the generated list. Then it launches the browser you configured. Getting the escaping, path, and syntax of the browser setting correct was a pain, but after that it worked great. That said, I got tired of the inability to display most special characters correctly (slrn could only do as well the cmd.exe), and have switched to Thunderbird. -- Neil Cerutti -- https://mail.python.org/mailman/listinfo/python-list
Question about Pass-by-object-reference?
Hi, I learn Python function call on tutorial. There is a link on this subject. http://robertheaton.com/2014/02/09/pythons-pass-by-object-reference-as-explained-by-philip-k-dick/ Although it explains clearly, the figure makes me puzzled. Python is different. As we know, in Python, Object references are passed by value. A function receives a reference to (and will access) the same object in memory as used by the caller. However, it does not receive the box that the caller is storing this object in; as in pass-by-value, the function provides its own box and creates a new variable for itself. Let's try appending again: On the figure, it shows that the result is [0, 1] (Am I right on the figure?) When I enter the command lines on my computer: list=[0] append(list) print(list) [0] How to understand my result and that figure? Thanks, -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On 7/22/14 3:04 PM, fl wrote: Hi, I learn Python function call on tutorial. There is a link on this subject. http://robertheaton.com/2014/02/09/pythons-pass-by-object-reference-as-explained-by-philip-k-dick/ Although it explains clearly, the figure makes me puzzled. Python is different. As we know, in Python, Object references are passed by value. A function receives a reference to (and will access) the same object in memory as used by the caller. However, it does not receive the box that the caller is storing this object in; as in pass-by-value, the function provides its own box and creates a new variable for itself. Let's try appending again: On the figure, it shows that the result is [0, 1] (Am I right on the figure?) This is a topic that often confuses people new to Python. The article you linked to seems very confusing to me. My own take on how to explain it is here: http://nedbatchelder.com/text/names.html When I enter the command lines on my computer: list=[0] append(list) print(list) [0] How to understand my result and that figure? You should have gotten [0, 1], you must have different code than was shown in the article. I recommend putting the code into a .py file, and running it all at once. Then if it doesn't do what you expect, you can show the entire .py file when asking for help. Thanks, -- Ned Batchelder, http://nedbatchelder.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 3:04:09 PM UTC-4, fl wrote: Hi, Excuse me. I find that the OP misses some info. I rewrite it again: I learn Python function call on tutorial. There is a link on this subject. http://robertheaton.com/2014/02/09/pythons-pass-by-object-reference-as-explained-by-philip-k-dick/ Although it explains clearly, the figure makes me puzzled. Python is different. As we know, in Python, Object references are passed by value. A function receives a reference to (and will access) the same object in memory as used by the caller. However, it does not receive the box that the caller is storing this object in; as in pass-by-value, the function provides its own box and creates a new variable for itself. Let's try appending again: On the figure, I understand the figure about append function. Here is the lines: When I enter the command lines on my computer: def append(list): ... list.append(1) ... list=[0] append(list) print(list) [0, 1] But I don't understand the reassign function result: def reassign(list): ... list=[0,1] ... list=[0] reassign(list) print list [0] Questions: 1. From the tutorial explanation, both function append and reassign use pass-by-object-reference. Is it right? 2. The tutorial says: The caller doesn't care if you reassign the function's box. Different boxes, same content. about the reassign function. I don't understand Different boxes, same content. It uses different boxes (I agree). But the results are different for the caller ([0]) and the function reassign ([0, 1]). What is wrong with my understanding? Thanks a lot, -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 3:32:19 PM UTC-4, Ned Batchelder wrote: On 7/22/14 3:04 PM, fl wrote: it is here: http://nedbatchelder.com/text/names.html When I enter the command lines on my computer: I recommend putting the code into a .py file, and running it all at once. Then if it doesn't do what you expect, Ned Batchelder, http://nedbatchelder.com Thanks Ned. You give a great helpful link. And your advice on .ph file is the key problem of my OP (Thus I rewrite my post again). Your link makes complicate things much easier. I read it carefully. -- https://mail.python.org/mailman/listinfo/python-list
Re: Removing xml elemient and strip extra space
On Jul 22, 2014 1:41 PM, Monte Milanuk memila...@invalid.com wrote: On 2014-07-22, varun bhatnagar varun292...@gmail.com wrote: I just want to scrape out nodeBase base=0 / But the way I have written my xsl file it is removing it but it is also leaving a blank space there. I want my output to look like this: This is the part where a certain amount of example code showing what you're doing would probably help people diagnose where the problem is... You might look at beatifulsoup4 -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tue, 22 Jul 2014 12:34:51 -0700 (PDT), fl rxjw...@gmail.com wrote: [snip] But I don't understand the reassign function result: def reassign(list): ... list=[0,1] ... list=[0] reassign(list) print list [0] When you say def reassign(list), that means I'm defining a function to which the caller will pass one object, and within this function I'm going to refer to that object by the name 'list'. Then, when you say list=[0,1], that means Create the object [0,1], and assign to it the name 'list'. At this point, there is no longer any name that refers to the object that the caller passed. You might have thought that list=[0,1] would modify the caller-passed object, but that's not what happens. That's not what = means. -- To email me, substitute nowhere-spamcop, invalid-net. -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On 07/22/2014 01:35 PM, Peter Pearson wrote: On Tue, 22 Jul 2014 12:34:51 -0700 (PDT), fl rxjw...@gmail.com wrote: [snip] But I don't understand the reassign function result: def reassign(list): ... list=[0,1] ... list=[0] reassign(list) print list [0] When you say def reassign(list), that means I'm defining a function to which the caller will pass one object, and within this function I'm going to refer to that object by the name 'list'. Then, when you say list=[0,1], that means Create the object [0,1], and assign to it the name 'list'. At this point, there is no longer any name that refers to the object that the caller passed. You might have thought that list=[0,1] would modify the caller-passed object, but that's not what happens. That's not what = means. However, if that is the behavior you were after, you can get there. def reassign(mylist): # no reason to shadow the list builtin mylist[:] = [0,1] mylist = [1] reassign(mylist) mylist Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On 2014-07-22, ismeal shanshi stuffstorehouse2...@gmail.com wrote: Herion,,Actavis promethazine codeine 16oz and 32oz available Ketamine Oxycontine Hydrocodone xanax and medicated marijuana US- free shipping and other related products for sell at competitive prices.We do world wide shipping to any clear address.Delivery is 100% safe due to our discreetness and experience.Try our quality and experience then have a story to tell another day. Email Address:stuffstorehouse2014 (AT) gmail.com CONTACT NUMBER: (407)-4852249 * Pleas text me only Aaaannnd here we have a good example of why it would be really nice to be able to filter/score based on the message *body*, not just the headers. 8( -- All right, breaks over. Back on your heads! ;) Reach me @ memilanuk at gmail dot com -- https://mail.python.org/mailman/listinfo/python-list
Is it possible to install Python on a network?
We are using Python in a large setup. Individual users are running Debian machines. When I want to install/upgrade Python for all users, I really want to do it centrally rather than every user having to upgrade on their own. Many software packages are installed this way. However, I could not figure out any way to do this with Python. How can I do this? Thank you. Koushik Roy -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On 2014-07-22, Monte Milanuk memila...@gmail.com wrote: On 2014-07-22, ismeal shanshi stuffstorehouse2...@gmail.com wrote: [drugs for sale] Aaaannnd here we have a good example of why it would be really nice to be able to filter/score based on the message *body*, not just the headers. 8( slrn filtered that out just fine based on headers alone, thank you. So, I didn't see it at all until you quoted the whole thing. Here's the relevent slrn scoring rule: Score:: =- Message-ID: .*googlegroups.com -- Grant Edwards grant.b.edwardsYow! Did I say I was at a sardine? Or a bus??? gmail.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to install Python on a network?
On 07/22/2014 01:49 PM, roys2...@gmail.com wrote: We are using Python in a large setup. Individual users are running Debian machines. When I want to install/upgrade Python for all users, I really want to do it centrally rather than every user having to upgrade on their own. Many software packages are installed this way. However, I could not figure out any way to do this with Python. How can I do this? This is more a sysadmin than python issue. And, debian itself has python dependencies, so you need to be careful you don't break it. That said, we use a similar setup and have an aptitude repository with approved software that holds the approved source packages users can install. Combining automated user system updating with a sole repository where only your versions are available should do it. Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On 2014-07-22, Grant Edwards invalid@invalid.invalid wrote: On 2014-07-22, Monte Milanuk memila...@gmail.com wrote: On 2014-07-22, ismeal shanshi stuffstorehouse2...@gmail.com wrote: [drugs for sale] Aaaannnd here we have a good example of why it would be really nice to be able to filter/score based on the message *body*, not just the headers. 8( slrn filtered that out just fine based on headers alone, thank you. So, I didn't see it at all until you quoted the whole thing. Here's the relevent slrn scoring rule: Score:: =- Message-ID: .*googlegroups.com True... but what if I don't want to be quite that elitist and black-ball every one posting via google groups? Some mailing lists I read via gmane *originate* on google groups (web2py list, for one). Other people posting from google groups are not malicious/trolls/jerks/spammers - and honestly until I started using slrn again, I didn't understand what all the fuss was about - gui news readers like Thunderbird handle the messages from there just fine. Maybe slrn needs an upgrade to gracefully handle html formatted messages - good bad or otherwise, they're pretty much here to stay, kind of like google groups. There are programs like lynx, elinks, etc. that can handle simple html via a cli program... so its not entirely beyond the realm of possibility. -- All right, breaks over. Back on your heads! ;) Reach me @ memilanuk at gmail dot com -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On Wed, Jul 23, 2014 at 7:21 AM, Monte Milanuk memila...@gmail.com wrote: Other people posting from google groups are not malicious/trolls/jerks/spammers - and honestly until I started using slrn again, I didn't understand what all the fuss was about - gui news readers like Thunderbird handle the messages from there just fine. Look at what happens when GG people reply to messages without explicitly fixing the quoted text. It comes out all double-spaced. That's not malice on their part, but eventually, some people just get sick of it and blacklist all those posts, because it's just not worth digging through the junk. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Why does not pprint work?
Hi, I read web tutorial at: http://nedbatchelder.com/blog/201308/names_and_values_making_a_game_board.html I enter the example lines of that website: import pprint board = [ [0]*8 ] * 8 pprint(board) It echos error with Python 2.7: Traceback (most recent call last): File C:\Python27\Lib\SITE-P~1\PYTHON~2\pywin\framework\scriptutils.py, line 323, in RunScript debugger.run(codeObject, __main__.__dict__, start_stepping=0) File C:\Python27\Lib\SITE-P~1\PYTHON~2\pywin\debugger\__init__.py, line 60, in run _GetCurrentDebugger().run(cmd, globals,locals, start_stepping) File C:\Python27\Lib\SITE-P~1\PYTHON~2\pywin\debugger\debugger.py, line 655, in run exec cmd in globals, locals File C:\cygwin64\home\Jeff\Python_lesson\ppn.py, line 1, in module import pprint TypeError: 'module' object is not callable It has similar error with Python 3.4.1. Why does pprint not work? Thanks, -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On Wed, Jul 23, 2014 at 7:42 AM, fl rxjw...@gmail.com wrote: I enter the example lines of that website: import pprint board = [ [0]*8 ] * 8 pprint(board) Flaw in the blog post: he didn't actually specify the import line. What you actually want is this: from pprint import pprint Or use pprint.pprint(board), but you probably don't need anything else from the module. Ned, if you're reading this: Adding the import would make the post clearer. :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On 07/22/2014 02:42 PM, fl wrote: Hi, I read web tutorial at: http://nedbatchelder.com/blog/201308/names_and_values_making_a_game_board.html I enter the example lines of that website: import pprint board = [ [0]*8 ] * 8 pprint(board) pprint is a module name -- you need to invoke the pprint function from within the pprint module: pprint.pprint(board) or alternately, from pprint import pprint pprint(board) or, as I sometime do from pprint import pprint as pp pp(board) Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: OT: usenet reader software
On 2014-07-22, Monte Milanuk memila...@gmail.com wrote: On 2014-07-22, Grant Edwards invalid@invalid.invalid wrote: On 2014-07-22, Monte Milanuk memila...@gmail.com wrote: On 2014-07-22, ismeal shanshi stuffstorehouse2...@gmail.com wrote: [drugs for sale] Aaaannnd here we have a good example of why it would be really nice to be able to filter/score based on the message *body*, not just the headers. 8( slrn filtered that out just fine based on headers alone, thank you. So, I didn't see it at all until you quoted the whole thing. Here's the relevent slrn scoring rule: Score:: =- Message-ID: .*googlegroups.com True... but what if I don't want to be quite that elitist and black-ball every one posting via google groups? Some mailing lists I read via gmane *originate* on google groups (web2py list, for one). There are one or two mailing lists that originate on GG, and I don't apply the rule to those lists. Other people posting from google groups are not malicious/trolls/jerks/spammers - True. But if they persist in posting via a well-known span-conduit that's also famous for various other breakages, then I don't see how they can be too surprised that not everybody sees their posts. I occasionally disable that rule, and it's never seemed like I was missing anything valuable. Maybe slrn needs an upgrade to gracefully handle html formatted messages - good bad or otherwise, they're pretty much here to stay, kind of like google groups. There are programs like lynx, elinks, etc. that can handle simple html via a cli program... so its not entirely beyond the realm of possibility. Even if they were nicely formatted, I'd still probably plonk GG posts just to avoid the garbage. -- Grant Edwards grant.b.edwardsYow! An Italian is COMBING at his hair in suburban DES gmail.comMOINES! -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On Tuesday, July 22, 2014 5:51:07 PM UTC-4, emile wrote: On 07/22/2014 02:42 PM, fl wrote: pprint is a module name -- you need to invoke the pprint function from within the pprint module: pprint.pprint(board) Thanks. I am curious about the two pprint. Is it the first pprint the name of the module? The second pprint is the function name? Then, how can I list all the function of pprint? And, is there a way to list the variables I create in Python? -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On 07/22/2014 03:05 PM, fl wrote: On Tuesday, July 22, 2014 5:51:07 PM UTC-4, emile wrote: On 07/22/2014 02:42 PM, fl wrote: pprint is a module name -- you need to invoke the pprint function from within the pprint module: pprint.pprint(board) Thanks. I am curious about the two pprint. Is it the first pprint the name of the module? The second pprint is the function name? Yes. Then, how can I list all the function of pprint? use the dir builtin: dir (pprint) ['PrettyPrinter', '_StringIO', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '_commajoin', '_id', '_len', '_perfcheck', '_recursion', '_safe_repr', '_sys', '_type', 'isreadable', 'isrecursive', 'pformat', 'pprint', 'saferepr'] And, is there a way to list the variables I create in Python? also dir: dir() ['__builtins__', '__doc__', '__name__', 'board', 'mylist', 'pprint', 'reassign'] Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 4:46:25 PM UTC-4, emile wrote: On 07/22/2014 01:35 PM, Peter Pearson wrote: def reassign(mylist): # no reason to shadow the list builtin mylist[:] = [0,1] mylist = [1] reassign(mylist) mylist Emile Thanks for your example. I do not find the explanation of [:] on line. Could you explain it to me, or where can I find it on line? -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On Wed, Jul 23, 2014 at 8:05 AM, fl rxjw...@gmail.com wrote: On Tuesday, July 22, 2014 5:51:07 PM UTC-4, emile wrote: On 07/22/2014 02:42 PM, fl wrote: pprint is a module name -- you need to invoke the pprint function from within the pprint module: pprint.pprint(board) Thanks. I am curious about the two pprint. Is it the first pprint the name of the module? The second pprint is the function name? Correct. There's a module pprint which provides a function pprint.pprint. It's like you can do this: import math math.sin(3.14/2) 0.996829318346 Or this: from math import sin sin(3.14/2) 0.996829318346 It's just that in this case, math and sin are both pprint. Then, how can I list all the function of pprint? import pprint help(pprint) And, is there a way to list the variables I create in Python? Kinda. Try this: dir() There'll be some in there that you didn't make, but that's a start. You could also try vars() or globals(), which will give you their values as well. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On Tue, Jul 22, 2014 at 3:17 PM, emile em...@fenx.com wrote: Then, how can I list all the function of pprint? use the dir builtin: dir (pprint) ['PrettyPrinter', '_StringIO', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '_commajoin', '_id', '_len', '_perfcheck', '_recursion', '_safe_repr', '_sys', '_type', 'isreadable', 'isrecursive', 'pformat', 'pprint', 'saferepr'] Another useful feature is the help function (can be used like help(pprint) or just help() for interactive usage), which will also provide the documentation for each item in addition to just the names. Chris -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
it copies the list On Tue, Jul 22, 2014 at 6:17 PM, fl rxjw...@gmail.com wrote: On Tuesday, July 22, 2014 4:46:25 PM UTC-4, emile wrote: On 07/22/2014 01:35 PM, Peter Pearson wrote: def reassign(mylist): # no reason to shadow the list builtin mylist[:] = [0,1] mylist = [1] reassign(mylist) mylist Emile Thanks for your example. I do not find the explanation of [:] on line. Could you explain it to me, or where can I find it on line? -- https://mail.python.org/mailman/listinfo/python-list -- Joel Goldstick http://joelgoldstick.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On 07/22/2014 03:17 PM, fl wrote: On Tuesday, July 22, 2014 4:46:25 PM UTC-4, emile wrote: On 07/22/2014 01:35 PM, Peter Pearson wrote: def reassign(mylist): # no reason to shadow the list builtin mylist[:] = [0,1] mylist = [1] reassign(mylist) mylist Emile Thanks for your example. I do not find the explanation of [:] on line. It's covered in the tutorial in https://docs.python.org/2/tutorial/introduction.html look for the section on slice notation Could you explain it to me, or where can I find it on line? If you haven't already, you should work your way through the full tutorial if for no other reason that to be familiar with content others find beginners should be introduced to. https://docs.python.org/2/tutorial/index.html Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 4:46:25 PM UTC-4, emile wrote: On 07/22/2014 01:35 PM, Peter Pearson wrote: def reassign(mylist): # no reason to shadow the list builtin mylist[:] = [0,1] mylist = [1] reassign(mylist) mylist Emile I have a new question on the code. When I run it in a file on PythonWin, 'mylist' does not echo anything on the screen. While I enter the command line by line, 'mylist' shows the result: mylist [0, 1] What mechanism is involved? Thanks, -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On 07/22/2014 03:31 PM, fl wrote: I have a new question on the code. When I run it in a file on PythonWin, 'mylist' does not echo anything on the screen. While I enter the command line by line, 'mylist' shows the result: mylist [0, 1] What mechanism is involved? As a convenience, the interactive prompt environment will display the value of a variable when entered on its own. In scripts, you'd usually want to use print. Emile -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 4:35:33 PM UTC-4, Peter Pearson wrote: On Tue, 22 Jul 2014 12:34:51 -0700 (PDT), fl r...@gmail.com wrote: When you say def reassign(list), that means I'm defining a function to which the caller will pass one object, and within this function I'm going to refer to that object by the name 'list'. Then, when you say list=[0,1], that means Create the object [0,1], The above is what rebind? see below I cite. and assign to it the name 'list'. At this point, there is no longer any name that refers to the object that the caller passed. Here is I find on-line about Arguments are passed by assignment. http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference If you pass a mutable object into a method, the method gets a reference to that same object and you can mutate it to your heart's delight, but if you rebind the reference in the method, the outer scope will know nothing about it, and after you're done, the outer reference will still point at the original object. Thanks -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tue, Jul 22, 2014 at 6:17 PM, fl rxjw...@gmail.com wrote: Thanks for your example. I do not find the explanation of [:] on line. Could you explain it to me, or where can I find it on line? It's pretty hard to find if you don't already know what's going on. First, you need to know that mylst[i:j] refers to a slice of the list mylist. Specifically, the items from the list starting with the item at index i, up to but not including the item at index j. If you leave the i off (e.g., mylist[:j]) that's a slice from the start of the list up to (but not including) the j-th item. If you leave the end position off, (e.g., mylist[i:]), that gets you the i-th item to the end (including the last item). If you leave off both indexes from the slice, you get back the entire contents of the list. So that's what mylist[:] means. Then you need to know that you can assign to the slice and it will replace the old elements from the slice with the new ones. You can see that defined here, in the docs (second item in the table under 4.6.3. Mutable Sequence Types): https://docs.python.org/3/library/stdtypes.html#mutable-sequence-types So, when you so mylist[:] = [0,1] you're taking all of the contents of the existing list, and replacing them with the contents of the list [0,1]. That changes the existing list, it doesn't just assign a new list to the name mylist. -- Jerry -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On 07/22/2014 04:00 PM, fl wrote: On Tuesday, July 22, 2014 4:35:33 PM UTC-4, Peter Pearson wrote: On Tue, 22 Jul 2014 12:34:51 -0700 (PDT), fl r...@gmail.com wrote: When you say def reassign(list), that means I'm defining a function to which the caller will pass one object, and within this function I'm going to refer to that object by the name 'list'. Then, when you say list=[0,1], that means Create the object [0,1], The above is what rebind? see below I cite. exactly. assigning to a variable within a function makes that variable local to the function; assigning to the contents (as with [:]) changes the contents, but not the container variable, and as the container element was passed in you'll see the changed item outside the function. Emile and assign to it the name 'list'. At this point, there is no longer any name that refers to the object that the caller passed. Here is I find on-line about Arguments are passed by assignment. http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference If you pass a mutable object into a method, the method gets a reference to that same object and you can mutate it to your heart's delight, but if you rebind the reference in the method, the outer scope will know nothing about it, and after you're done, the outer reference will still point at the original object. Thanks -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
When you call a function, Python binds function parameter names to argument objects in the function's local namespace, the same as in name assignments. Given def f(a, b): pass a call f(1, 'x') starts by executing a, b = 1, 'x' in the local namespace. Nothing is being 'passed'. -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to install Python on a network?
Emile, thanks for the quick response. Does this mean Python cannot be or should not be installed at a central location? If so, what is the root cause for this? - Koushik -- https://mail.python.org/mailman/listinfo/python-list
Re: testfixtures 4.0.0 Released!
In article mailman.12182.1406042260.18130.python-l...@python.org, Chris Withers ch...@simplistix.co.uk wrote: - Moved from buildout to virtualenv for development. I use virtualenv (and love it). I've never used buildout. Would you be willing to give a short synopsis of why you switched? -- https://mail.python.org/mailman/listinfo/python-list
Re: Unicode, stdout, and stderr
Frank Millman fr...@chagford.com writes:
Steven D'Aprano st...@pearwood.info wrote in message
news:53ce0b96$0$29897$c3e8da3$54964...@news.astraweb.com...
On Tue, 22 Jul 2014 08:18:08 +0200, Frank Millman wrote:
This is not important, but I would appreciate it if someone could
explain the following, run from cmd.exe on Windows Server 2003 -
C:\python
Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32
bit (In
tel)] on win32
Type help, copyright, credits or license for more information.
x = '\u2119'
x # this uses stderr
'\u2119'
It seems that there is a difference between writing to stdout and
writing to stderr.
I would be surprised if that were the case, but I don't have a Windows
box to test it. Try this:
import sys
print(x, file=sys.stderr) # I expect this will fail
It does not fail.
print(repr(x), file=sys.stdout) # I expect this will succeed
It fails.
Check sys.stderr.errors attribute. Try
import sys
x = '\u2119'
x.encode(sys.stderr.encoding, sys.stderr.errors) # succeed
x.encode(sys.stdout.encoding, sys.stdout.errors) # fail
sys.stderr uses 'backslashreplace' error handler that is why you see
\u2119 instead of ℙ.
On Linux with utf-8 locale:
print('\u2119')
ℙ
print(repr('\u2119'))
'ℙ'
print(ascii('\u2119'))
'\u2119'
'\u2119'
'ℙ'
repr('\u2119')
'ℙ'
ascii('\u2119')
'\\u2119'
On Windows, try https://pypi.python.org/pypi/win_unicode_console
C:\ pip install win-unicode-console
C:\ py -i -m run
It is alpha but your feedback may improve it
https://github.com/Drekin/win-unicode-console/issues
If you could also use a GUI console e.g.:
C:\ py -3 -m idlelib
Or http://ipython.org/notebook.html
There are many other IDEs for Python e.g.,
http://stackoverflow.com/q/81584/what-ide-to-use-for-python
--
Akira
--
https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tuesday, July 22, 2014 8:27:15 PM UTC-4, Terry Reedy wrote: When you call a function, Python binds function parameter names to argument objects in the function's local namespace, the same as in name assignments. Given def f(a, b): pass a call f(1, 'x') starts by executing a, b = 1, 'x' in the local namespace. Nothing is being 'passed'. -- Terry Jan Reedy Thanks, but I don't understand your point yet. Could you give me another example in which something is passed? BTW, to a previous reply post. I have learned ':' in regular expression. But I am still new to Python, I did not realize that it is the same ':' in the string search/match. -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
fl rxjw...@gmail.com writes: On Tuesday, July 22, 2014 8:27:15 PM UTC-4, Terry Reedy wrote: When you call a function, Python binds function parameter names to argument objects in the function's local namespace, the same as in name assignments. […] Nothing is being 'passed'. Thanks, but I don't understand your point yet. Could you give me another example in which something is passed? The point being made is that no values are is “passed” in a function call. If you have learned that term from elsewhere, it doesn't apply sensibly to Python. When you have a function ‘foo’ defined to expect a parameter, and you specify an object (say, the object you have access to by the reference ‘bar’):: foo(bar) What happens is that *the very same object* you're referring to by the name ‘bar’ is then referenced by a *different* name inside the function ‘foo’. There is no passing; the same object gets a new local name assigned to it, for use only within that function's code. Function parameters aren't passed anywhere, they don't go anywhere, they don't get cast or copied or anything else to the function. The function gets to refer to the identical object by a name local in that function; you can see what that parameter's name is by the definition of the function. -- \ “Pray, v. To ask that the laws of the universe be annulled in | `\ behalf of a single petitioner confessedly unworthy.” —Ambrose | _o__) Bierce, _The Devil's Dictionary_, 1906 | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tue, 22 Jul 2014 12:04:09 -0700, fl wrote: Hi, I learn Python function call on tutorial. There is a link on this subject. http://robertheaton.com/2014/02/09/pythons-pass-by-object-reference-as- explained-by-philip-k-dick/ Although it explains clearly, the figure makes me puzzled. Here is my take on the same question: http://import-that.dreamwidth.org/1130.html Feedback is welcome. Python is different. As we know, in Python, Object references are passed by value. I'm not sure who said that, but they weren't really being clear. The mention of passed by value is pointless, since it refers only to the implementation inside the interpreter, and not anything you can see using Python code. What it means is that under the hood, you have a mysterious thing called an object reference. That's just another way of saying reference to an object, which is usually implemented as a pointer. When the interpreter passes an argument to a function, it does so by making a copy of that pointer (hence passed by value). The copy still points to the same object. I believe that for people thinking at the level of *Python code*, such descriptions aimed at the level of the underlying C code inside the interpreter add heat but no light. They simply cause more confusion than clarity. -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On 7/22/14 5:49 PM, Chris Angelico wrote: On Wed, Jul 23, 2014 at 7:42 AM, fl rxjw...@gmail.com wrote: I enter the example lines of that website: import pprint board = [ [0]*8 ] * 8 pprint(board) Flaw in the blog post: he didn't actually specify the import line. What you actually want is this: from pprint import pprint Or use pprint.pprint(board), but you probably don't need anything else from the module. Ned, if you're reading this: Adding the import would make the post clearer. :) Done. ChrisA -- Ned Batchelder, http://nedbatchelder.com -- https://mail.python.org/mailman/listinfo/python-list
Re: A Pythonista Meets JavaScript™
Ben Finney ben+pyt...@benfinney.id.au writes: Monte Milanuk memila...@invalid.com writes: I know literally almost nothing about JS. At the Melbourne Python Users's Group this year, I gave a presentation URL:http://vimeo.com/album/2855296/video/93691338 on my initial learnings of JavaScript™ (and ECMAScript) from a Python programmer's perspective. Lele Gaifax l...@metapensiero.it writes: I completely agree with Roy on the language itself, it has several tricky parts that require some training to learn how to avoid, defects that are inherent to language and to the syntax, that no framework or library can really eliminate. There is a very good book by Douglas Crockford, JS: the good parts that I recommend reading. Yes, in my talk above I leaned heavily on Doug Crockford's book “JavaScript: The Good Parts”. He mkes an opinionated division between the parts of the language to avoid, and the subset which can be used happily as a good, functional language for building programs. On the framework, ExtJS is the one I know better and its quite good and powerful: it has a dual license, GPL for free software projects and a commercial version Please note that the opposite of free software is not commercial software. The GPL explicitly says “You may charge any price or no price for each copy that you convey”, and I think we both agree the GPL is a free-software license. So free software *is* commercial software; software for a fee doesn't in any way stop it from being free software. The opposite of free software is proprietary software, and I agree that some of the problems with ExtJS come from the fact that the current copyright holder privileges the proprietary licensees at the expense of the free-software licensees. They also exacerbate the confusion by referring to their proprietary license as “commercial license”, ignoring the fact that the GPL also explicitly condones commercial activity. My main complaint is about their (Sencha's) release policy which frankly sucks, on both sides (free and commercial): they do not have a clear roadmap, you report bugs in a forum and from then on you cannot know if and when the bug gets fixed, or even released. That's a real shame. The same is true of MySQL, which while free software is held under CLA to a single copyright holder. That copyright holder (now Oracle) shows no interest in supporting the free-software MySQL and as a result it has declined under their stewardship. I'm sorry to hear the same – a free-software license available, but supported far worse than the restrictive proprietary version – appears to be happening to ExtJS. They assert to have an extensive suite of unit and functional tests, but sometime I have the doubt they do not run it as often as one would expect :-) In the case of MySQL, the extensive test suite itself is suffering from Oracle neglecting it in favour of the proprietary version: tests in recent years have simply not appeared in the free-software code base, and they're behind locked doors at Oracle. A sober warning against entrusting a widely-deployed software project to any single copyright holder. -- \“A right is not what someone gives you; it's what no one can | `\ take from you.” —Ramsey Clark | _o__) | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to install Python on a network?
On Tue, Jul 22, 2014 at 5:41 PM, roys2005 roys2...@gmail.com wrote: Emile, thanks for the quick response. Does this mean Python cannot be or should not be installed at a central location? If so, what is the root cause for this? Back when I was a sysadmin, I would install CPython to a few different NFS filesystems for hundreds of machines to use (more than one filesystem because we had about 5 *ix variants - you probably only need 1). It's just a matter of ./configure --prefix=/where/ever make make install once you have the build dependencies. It worked fine, but if you symlink you get into trouble because Python can't find it's default module path where it expects; symlinking can require a wrapper that sets an environment variable - I believe it was $PYTHONPATH. Perhaps it would be appropriate to ask: Why are you wondering if it works? -- https://mail.python.org/mailman/listinfo/python-list
Re: Is it possible to install Python on a network?
roys2005 roys2...@gmail.com writes: Does this mean Python cannot be or should not be installed at a central location? Can you explain better what you mean by this? As stated, it doesn't make much sense to me: Any machine which supports running Python can be central or distributed, but it can only be invoked on the same machine. What does it mean *to you* to say “install Python on a network”? Perhaps you're asking not so much about installing, but *running* Python. I don't see how you can run a program “on a network” except by running the program *on one specific machine* and having that program *communicate* over a network. Is that what you mean? If not, you're going to need to explain what you are asking more precisely. -- \ “Books and opinions, no matter from whom they came, if they are | `\ in opposition to human rights, are nothing but dead letters.” | _o__) —Ernestine Rose | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Distributing python applications as a zip file
A little known feature of Python: you can wrap your Python application in a zip file and distribute it as a single file. The trick to make it runnable is to put your main function inside a file called __main__.py inside the zip file. Here's a basic example: steve@runes:~$ cat __main__.py print(NOBODY expects the Spanish Inquisition!!!) steve@runes:~$ zip appl __main__.py adding: __main__.py (stored 0%) steve@runes:~$ rm __main__.py steve@runes:~$ python appl.zip NOBODY expects the Spanish Inquisition!!! On Linux, you can even hack the zip file to include a shebang line! steve@runes:~$ cat appl #!/usr/bin/env python # This is a Python application stored in a ZIP archive. steve@runes:~$ cat appl.zip appl steve@runes:~$ chmod u+x appl steve@runes:~$ ./appl NOBODY expects the Spanish Inquisition!!! It's not quite self-contained, as you still need to have Python installed, but otherwise it's a good way to distribute a Python application as a single file that users can just copy and run. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does not pprint work?
On Wed, Jul 23, 2014 at 12:26 PM, Ned Batchelder n...@nedbatchelder.com wrote: Ned, if you're reading this: Adding the import would make the post clearer. :) Done. Thanks Ned! ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Distributing python applications as a zip file
On 07/22/2014 09:23 PM, Steven D'Aprano wrote: A little known feature of Python: you can wrap your Python application in a zip file and distribute it as a single file. The trick to make it runnable is to put your main function inside a file called __main__.py inside the zip file. Here's a basic example: steve@runes:~$ cat __main__.py print(NOBODY expects the Spanish Inquisition!!!) steve@runes:~$ zip appl __main__.py adding: __main__.py (stored 0%) steve@runes:~$ rm __main__.py steve@runes:~$ python appl.zip NOBODY expects the Spanish Inquisition!!! On Linux, you can even hack the zip file to include a shebang line! steve@runes:~$ cat appl #!/usr/bin/env python # This is a Python application stored in a ZIP archive. steve@runes:~$ cat appl.zip appl steve@runes:~$ chmod u+x appl steve@runes:~$ ./appl NOBODY expects the Spanish Inquisition!!! It's not quite self-contained, as you still need to have Python installed, but otherwise it's a good way to distribute a Python application as a single file that users can just copy and run. Really! 20 years of Pythoning, and I'd never seen this! When was this introduced? Gary Herron -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Wed, 23 Jul 2014 11:59:45 +1000, Ben Finney wrote: fl rxjw...@gmail.com writes: On Tuesday, July 22, 2014 8:27:15 PM UTC-4, Terry Reedy wrote: When you call a function, Python binds function parameter names to argument objects in the function's local namespace, the same as in name assignments. […] Nothing is being 'passed'. Thanks, but I don't understand your point yet. Could you give me another example in which something is passed? The point being made is that no values are is “passed” in a function call. If you have learned that term from elsewhere, it doesn't apply sensibly to Python. Hmmm. I don't know that I like that. I think that these two sentences mean the same thing: Call the function with x as argument. Pass x to the function. They both describe what is being done, only from slightly different points of view. In mathematics, to call a function is a completely abstract action. Magic happens, and a result is returned. But in programming languages, calling a function has concrete actions: certain things have to happen even before the function itself executes. What sort of things? Well, for starters, somehow the arguments need to be passed to the function, so that the function can tell the difference between being called with x as argument and being called with y as argument. If you say nothing is being passed, then my response would be Oh, you aren't calling the function at all? Or just calling it with no arguments? I maintain that treating call and pass as more-or-less the same thing is common terminology, used throughout both mathematics and computing, and there's no very little benefit to avoiding it in the case of Python. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Question about Pass-by-object-reference?
On Tue, 22 Jul 2014 20:27:15 -0400, Terry Reedy wrote: When you call a function, Python binds function parameter names to argument objects in the function's local namespace, the same as in name assignments. Given def f(a, b): pass a call f(1, 'x') starts by executing a, b = 1, 'x' in the local namespace. Nothing is being 'passed'. If nothing is being passed, how does the function know to bind 1 and 'x' to names a and b, rather than (say) this? a, b = 23, 'Surprise! -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Distributing python applications as a zip file
On Tue, Jul 22, 2014 at 9:23 PM, Steven D'Aprano st...@pearwood.info wrote: A little known feature of Python: you can wrap your Python application in a zip file and distribute it as a single file. The trick to make it runnable is to put your main function inside a file called __main__.py inside the zip file. snip It's not quite self-contained, as you still need to have Python installed, but otherwise it's a good way to distribute a Python application as a single file that users can just copy and run. And if you want something nearly completely self-contained (probably modulo dynamic linking), it seems that there's PEX (http://pex.readthedocs.org/en/latest/ ). Cheers, Chris -- https://mail.python.org/mailman/listinfo/python-list
[issue21597] Allow turtledemo code pane to get wider.
Terry J. Reedy added the comment: For me, FLAT is about as mushy as the default, while SOLID actually looks like a divider. I find the sash easier to 'grab' and move. I plan to go with that. If it looks substantially worse on some other system, we could make the argument conditional on sys.platform or whatever. I plan to do a 'final' review in the next day and either commit or post a revision for testing on non-Windows systems. -- stage: patch review - commit review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21597 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Terry J. Reedy added the comment: I plan to commit the sash patch before reviewing this. I would wait until then to do a separate patch. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Terry J. Reedy added the comment: MOUSEWHEEL should continue to scroll. CONTROL+MOUSEWHEEL should change font size, as you said at the beginning. At least on Windows, this seems pretty standard: Internet Explorer, Firefox, Notepad++, LibreOffice (and, I imagin, OpenOffice, and Word), Thunderbird. The only exception I can find that has a font size setting but ignores ^wheel is Command Prompt, which breaks multiple UI rules. Notepad does not allow font resizing. Get ^wheel to work right and I would like to add it to Idle, where ^wheel scrolls along with wheel. ^+ and ^- are pretty standard also, though LibreOffice does not recognize them. Perhaps this is because it is explicit cross platform. We can conditionally not bind wheel events on Mac setups where it fails. Does #10731 have enough info to do that? In not... I have not yet looked into generating key/mouse events from code, but perhaps it would be possible to generate a wheel event inside try: except and unbind if there is an exception. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Lita Cho added the comment: Sounds good. I can wait till the sash code gets incorporated in order to add in the font code. I would have to generate a MOUSEWHEEL event and see if it fails. I have generated mouse clicks before. I'll try to see if I can generate a MOUSEWHEEL event and if it errors, not bind to it. Although it might be hard for me to test, as I just updated my tcl/tk. I will also try to figure out how to bind to Ctrl+MOUSEWHEEL and not just MOUSEWHEEL. Lita On Mon, Jul 21, 2014 at 11:35 PM, Terry J. Reedy rep...@bugs.python.org wrote: Terry J. Reedy added the comment: MOUSEWHEEL should continue to scroll. CONTROL+MOUSEWHEEL should change font size, as you said at the beginning. At least on Windows, this seems pretty standard: Internet Explorer, Firefox, Notepad++, LibreOffice (and, I imagin, OpenOffice, and Word), Thunderbird. The only exception I can find that has a font size setting but ignores ^wheel is Command Prompt, which breaks multiple UI rules. Notepad does not allow font resizing. Get ^wheel to work right and I would like to add it to Idle, where ^wheel scrolls along with wheel. ^+ and ^- are pretty standard also, though LibreOffice does not recognize them. Perhaps this is because it is explicit cross platform. We can conditionally not bind wheel events on Mac setups where it fails. Does #10731 have enough info to do that? In not... I have not yet looked into generating key/mouse events from code, but perhaps it would be possible to generate a wheel event inside try: except and unbind if there is an exception. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Ned Deily added the comment: Lita, I tried the patch. From the perspective of an OS X user, while I might expect that using the zoom gesture on a mousepad or using a mousewheel (the equivalent) to increase or decrease the font size, I would even more expect scrolling to work especially if scrollbars are present. Clearly, scrolling is more important so, if it is not possible to bind Tk mousewheel events without affecting scrolling, I would abandon the mousewheel. On OS X, the standard way to provide size adjustment (of fonts or images) is to provide Bigger or Smaller menu items with the standard keyboard shortcuts of Command-Shift-Equal (and Command-Equal) which is displayed as Command + (so the user on a US keyboard just presses the Command key and the =/+ key) and Command-Hyphen (Command -). The Apple OS X Human Interface Guidelines go into more detail and you can see these shortcuts in action in many standard OS X applications (TextEdit, Mail, Safari, etc). As it stands today, turtledemo does not use the standard OS X menu bar where these commands would normally be placed. And that's a bit of a separate problem because since turtledemo doesn't change the root menu it defaults to a Tk-provided one which includes things Run Widget Demo under the file menu. To be a proper OS X app, turtledemo should customize the menu, at least removing the widget demo item and then it could add the Bigger and Smaller menu items to a Format menu. Actually, the turtledemo Examples and Help pulldown options would ideally also be available in the standard menu hierarchy. I'm not suggesting that is a requirement but that's what I think an OS X user would expect and what the Apple HIG would require. https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/KeyboardShortcuts/KeyboardShortcuts.html https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/Menus/Menus.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Lita Cho added the comment: I completely agree about the mousewheel. However, would it make sense for OS X to combine command with mousewheel? I have never seen that before. I am not sure if I can bind the zoom gesture with tkinter, but I can find out. I also think the shortcuts are not intuitive as an OS X user, as command should be used instead of Ctrl. What I can do check the operating system and define the font shortcuts accordingly. I am not sure about redefining the Menu shortcuts as that seems like a separate issue. On Mon, Jul 21, 2014 at 11:52 PM, Ned Deily rep...@bugs.python.org wrote: Ned Deily added the comment: Lita, I tried the patch. From the perspective of an OS X user, while I might expect that using the zoom gesture on a mousepad or using a mousewheel (the equivalent) to increase or decrease the font size, I would even more expect scrolling to work especially if scrollbars are present. Clearly, scrolling is more important so, if it is not possible to bind Tk mousewheel events without affecting scrolling, I would abandon the mousewheel. On OS X, the standard way to provide size adjustment (of fonts or images) is to provide Bigger or Smaller menu items with the standard keyboard shortcuts of Command-Shift-Equal (and Command-Equal) which is displayed as Command + (so the user on a US keyboard just presses the Command key and the =/+ key) and Command-Hyphen (Command -). The Apple OS X Human Interface Guidelines go into more detail and you can see these shortcuts in action in many standard OS X applications (TextEdit, Mail, Safari, etc). As it stands today, turtledemo does not use the standard OS X menu bar where these commands would normally be placed. And that's a bit of a separate problem because since turtledemo doesn't change the root menu it defaults to a Tk-provided one which includes things Run Widget Demo under the file menu. To be a proper OS X app, turtledemo should customize the menu, at least removing the widget demo item and then it could add the Bigger and Smaller menu items to a Format menu. Actually, the turtledemo Examples and Help pulldown options would ideally also be available in the standard menu hierarchy. I'm not suggesting that is a requirement but that's what I think an OS X user would expect and what the Apple HIG would require. https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/KeyboardShortcuts/KeyboardShortcuts.html https://developer.apple.com/library/mac/documentation/userexperience/conceptual/applehiguidelines/Menus/Menus.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)
Changes by Ned Deily n...@acm.org: -- nosy: +steve.dower, zach.ware ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22028 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22003] BytesIO copy-on-write
Serhiy Storchaka added the comment: See also issue15381. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22003 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Ned Deily added the comment: On OS X, the actions associated with trackpad gestures are controlled by the Trackpad panel of System Preferences. The default settings map the pinch with two fingers gesture to Zoom in or out which Tk apps see as Mousewheel events: no programming needed! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21970] Broken code for handling file://host in urllib.request.FileHandler.file_open
Roundup Robot added the comment: New changeset 4b98961748f1 by Senthil Kumaran in branch '3.4': Fix localhost checking in FileHandler. Raised in #21970. http://hg.python.org/cpython/rev/4b98961748f1 New changeset 2c660948bb41 by Senthil Kumaran in branch 'default': Merge 3.4 http://hg.python.org/cpython/rev/2c660948bb41 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21970 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21970] Broken code for handling file://host in urllib.request.FileHandler.file_open
Senthil Kumaran added the comment: I have addressed the mistake where req.host is self.get_names() was done instead of req.host in self.get_names() in the first commit as it was an obvious problem. I will come up with patch/solution addressing the other behavior mentioned in this report. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21970 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21933] Allow the user to change font sizes with the text pane of turtledemo
Lita Cho added the comment: What really? That is so awesome! I will check that out! However, I figure I still need to create separate bindings for Linux, Windows and Mac, right? Or does Tkinter unify all the mousewheel events? Lita On Tue, Jul 22, 2014 at 12:18 AM, Ned Deily rep...@bugs.python.org wrote: Ned Deily added the comment: On OS X, the actions associated with trackpad gestures are controlled by the Trackpad panel of System Preferences. The default settings map the pinch with two fingers gesture to Zoom in or out which Tk apps see as Mousewheel events: no programming needed! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21933 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
