Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On 3/29/14 6:59 AM, Marko Rauhamaa wrote: I hate localization. You get a error message in Finnish from make or grep and then you try to google it. So mine is en_US, but I know people who do fi_FI. ... this is my point precisely. -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
On Sat, 29 Mar 2014 19:54:09 -0700, Rustom Mody wrote: On Sunday, March 30, 2014 8:09:45 AM UTC+5:30, Roy Smith wrote: I have no particular problem with x 2 y because it fits the same pattern. But, if you show me a != None != b: my brain just goes into overload. Honestly, I don't even know what that means. My brain keeps trying to stick a, None, and b on Mrs. Albaum's number line and keeps walking into the wall. If you (the editorial you) tell me that my failure to grok that expression means I'm not fluent in Python, well then, guilty as charged. Math Terminology [...] So for != chained comparisons are not natural (or IMHO appropriate) I tend to agree they're not natural, although appropriate is another thing. The problem is that we tend to read something like: a != b != c as all of a, b and c are unequal, corresponding to: a == b == c as all of a, b and c are equal. But that's not what it means. It means that a != b and b != c, but it says nothing about a and c. And that was my mistake. The OP actually got it right in their first post, but sticking None in the middle to ensure it partakes of both comparisons. a is not None is not b Still, that's not easily extended to a third item, this would be wrong: a is not None is not b is not c since c only gets compared against b, not None. Better is to factor the not out: not (a is b is c is None) which now should be clear: you're testing whether or not *all* of a, b and c are None. If you prefer: not all(x is None for x in (a, b, c)) Which is more readable is a matter of personal preference. I think Johannes got it right: boolean logic is easier to reason about when there is a minimum of nots. -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
On Sun, Mar 30, 2014 at 4:54 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 30 Mar 2014 13:15:18 +1100, Chris Angelico wrote: Chained comparisons where you're checking a single variable against two constants make perfect sense: 2 x 5 Chained comparisons where you check a single constant against two variables don't, so much: x 2 y What exactly does that mean, and why is it written that way? It checks that 2 is strictly bounded between x on the left and y on the right, i.e. that 2 is inside the open interval x...y. I don't know why you think that's unclear. But then I do have a maths background and I'm used to chaining comparisons. Write it like this: low = x high = y a = 2 low a high Does that make more sense? Well-chosen names are good. The fact that a is a constant rather than a variable is no big deal: low 2 high The problem isn't that I can't see what the comparisons are. It makes very good sense to bound a variable within constants; but you already know exactly where 2 is on the number line, so asking Is 2 between these two variables seems a bit odd. Maybe it's less so with the strong mathematical background, but it seems odd to me. It'd be more useful but less clear if one of the conditions points the other way: x 2 y which checks that they're both less than two, which is quite different from what you wrote the first time. but IMO in a less-than-clear way. That's an understatement. If I saw code chaining comparisons in that fashion, I would assume the second operator was a typo. Chaining less-than and greater than operators should, for clarity, always be written in a single order. E.g. a = b c d, not a = b d c. (The second contains a subtle bug too.) Agreed. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: unicode as valid naming symbols
Chris Angelico wrote: a 5x8 bitmap has forty pixels, any of which can be either on or off - that gives roughly twice as much data space as the 21-bit Unicode spec. We don't need a font, then -- just map the pixels straight onto bits in the character code! Might require some user re-education, but that's a small price to pay for saving so much memory space. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On 3/29/14 12:53 PM, Steven D'Aprano wrote: People have had localised code pages, and localised keyboards to enter characters in those code pages, for up to 30 years, if not longer. Nobody is arguing otherwise, Steven. Having a code page for a local language is not the same thing as having software that supports your local language code page! Software and code pages improved over time, but international communication (which is what I'm talking about) has always been done in English, using ASCII. Well except when Guido brought the ABC stuff to the states back in the day and had no way to do that except to fly himself (and the tape) personally. In some of those cases, the localisation was done by companies like IBM, Microsoft and Apple, realising that if they wanted to sell computers outside of the US, they needed to supply computers that were localised to their market. Unfortunately that happened way late. And even then, international communication was still done (and is still done) in English. Only until very recently (see my post to Chris) has unicode improved to the point where international comm can occur reliably enough (input, font, code points) to allow comm in languages other than English. And yet, although Kanji has been around for a while, most international comm is still handled in English because its the lingua franca. This code page system actually worked pretty well, so long as you only exchange documents with people using the same code page. Until the Internet, that was mostly the case. My point exactly. With the advent of the Internet, almost *all* comm is English with minor notable exceptions in today's environment. Just look around, you need not argue with me. You can find places for local comm, but they are sparse. That's why they called it ASCII American Standard Code for Information Interchange... Yes. So what? Just because ASCII exists doesn't mean everyone uses it *exclusively*. Yeah, well, that's exactly what happened; its still happening. Only today its UTF-8, a Latin script (there is only one) and thousands of people all over the earth on the Internet speaking English around the globe. Yeah, I know, there are localized pockets and people using their computer in their heart language, but for international communication you're going to find (primarily) people communicating in English. With the demise of EBCDIC as the standard character encoding (actually plural encodings, because EBCDIC has code pages too), Ha! That's funny. EBCIDIC is | was standard only at IBM. Those stubborn people (I used to be one of them) stuck with EBCIDIC and SNA/SDLC until they realized that they could not communicate with the rest of the world using ASCII and TCP/IP. ... just hilarious! ASCII has become the lowest common denominator for most (but not all) character sets. Pre- Unicode, most (but definitely not all!) code pages were based on ASCII, either with a few changes, or extending it to a full 8 bits. Yup. But that's the point: Yes it is. most people with access to computing in the first place, also had access to input methods and code pages for their native language. Your idea that they were forced to use ASCII exclusively, with no way of entering their own language, is simply wrong. I'm not arguing that, Steven. You're just being silly. I'm talking about be forced to communicate around the world when most of the people communicating are speaking English and using ASCII. Look, I can unplug my computer from the Internet and use it to translate biblical Greek and O.T. Hebrew and be happy as a clam that I'm locally doing my own thing in my own language (so what)? The moment I want to communicate outside my local space I better know English, and I better have a code page that supports it. If you live in Israel, and only communicate with people in Israel, you can use your modern Hebrew font and code page and be happy as a clam; but if you want to communicate with somebody in IOWA, perhaps Iowa State for some reason, you better know English. Just say'n. On the other hand, just look around the Internet. 98% of all communication is English using UTF-8 today. Yes, you can find pockets where this is not true, but primarily, the world is using a modern lingua franca. I am very interested with the intense interest in this topic. marcus -- https://mail.python.org/mailman/listinfo/python-list
OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Sun, 30 Mar 2014 00:52:20 -0500, Mark H Harris wrote: On 3/29/14 10:45 AM, Mark Lawrence wrote: On 29/03/2014 08:21, Mark H Harris wrote: Yes. Well, as the joke goes, if you're trilingual you speak three languages, if you're bilingual you speak two languages, if you're monolingual you're an American (well, that might go for Australia too, maybe). When whole continents speak the same language that tends to happen. You mean like the USA, where I saw an ad in a shop for a bilingual shop assistant? Or is Spanish so like US English it doesn't count as a separate language? I'm not sure what point you are trying to make. We have people here from all over the earth, and enough illegal immigrants speaking Spanish to account for a population about the size of Ohio. *raises eyebrow* Did you intend to imply that it is only illegal immigrants who speak Spanish in the USA? The most recent US census found there are 38.5 million people in the US who primarily speak Spanish, and 45 million who speak it as their first or second language. In comparison, there are only an estimated 11 million illegal immigrants (of which only 7 million is from Mexico). https://en.wikipedia.org/wiki/Spanish_language_in_the_United_States -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Sun, Mar 30, 2014 at 5:31 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Did you intend to imply that it is only illegal immigrants who speak Spanish in the USA? I think he's correct there. After all, anyone who doesn't fit the white-skinned monolingual (barely-one-language, really) middle-class stereotype *MUST* be an illegal immigrant - right? That's how you recognize who to be rude to. http://notalwaysright.com/pepperoni-extremism/3163 http://notalwaysright.com/no-obamacare-for-you/17102 http://notalwaysworking.com/they-are-rotten-to-the-corps-part-2/32108 ... and plenty more stories besides. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
Roy Smith wrote: But, if you show me a != None != b: my brain just goes into overload. Chained comparisons get weird with not-equal operators. If you see a == b == c then it implies that a == c, but a != b != c does *not* imply that a != c. At least it doesn't in Python; I've never seen any mathematicians write that, so I don't know what they would make of it. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On 3/30/14 1:31 AM, Steven D'Aprano wrote: I'm not sure what point you are trying to make. We have people here from all over the earth, and enough illegal immigrants speaking Spanish to account for a population about the size of Ohio. *raises eyebrow* Did you intend to imply that it is only illegal immigrants who speak Spanish in the USA? Don't be silly, Steven, it doesn't become you. The most recent US census found there are 38.5 million people in the US who primarily speak Spanish, and 45 million who speak it as their first or second language. In comparison, there are only an estimated 11 million illegal immigrants (of which only 7 million is from Mexico). https://en.wikipedia.org/wiki/Spanish_language_in_the_United_States Hilarious! That's part of the problem, um, its because they are *illegal* that the census bureau does not know about them in terms of exact numbers; its a nice effort though. America is a melting pot (always has been). We have thousands of ethnic groups living here and thousands of languages spoken here. All of them are in some place on the continuum of English as a second language; its the only way to survive here. marcus -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
Chris Angelico ros...@gmail.com writes: The problem isn't that I can't see what the comparisons are. It makes very good sense to bound a variable within constants; but you already know exactly where 2 is on the number line, so asking Is 2 between these two variables seems a bit odd. Maybe it's less so with the strong mathematical background, but it seems odd to me. I don't feel odd about asking the question “Is 2 between these two values?”. It's straightforward and concise. Can you explain better why you find it odd? -- \ “You are welcome to visit the cemetery where famous Russian and | `\Soviet composers, artists, and writers are buried daily except | _o__) Thursday.” —Russian orthodox monastery, Moscow | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: Keyboard standards
On 03/29/2014 12:41 PM, Michael Torrie wrote: On 03/29/2014 01:27 PM, Larry Hudson wrote: On 03/28/2014 09:26 PM, Mark H Harris wrote: PS Thunderbird puts *both* the list and the news group addys in the to: header field on reply-to-list. ~nice, huh. Must be the way YOU set it up. MY Thunderbird (currently version 24.4.0 on Mint Linux 16) doesn't do any such thing. Besides, Reply sends private e-mail to the poster -- Followup sends to the newsgroup. No, Mark describes the standard way Thunderbird works. Reply-to-List does what he says it does. Not sure why your installation works differently. I guess maybe you are talking about something different. The mailing list vs the NNTP list. You're right -- I use the NNTP list only. I've never looked at the Python mailing list. The very few mailing lists I subscribe to, I only read--never reply to. Come to think of it, currently there's only one, and I rarely do more than skim it briefly--and frequently not even that. I should drop it altogether, just haven't bothered to do so. -=- Larry -=- -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On 03/29/2014 10:52 PM, Mark H Harris wrote: On 3/29/14 10:45 AM, Mark Lawrence wrote: On 29/03/2014 08:21, Mark H Harris wrote: Yes. Well, as the joke goes, if you're trilingual you speak three languages, if you're bilingual you speak two languages, if you're monolingual you're an American (well, that might go for Australia too, maybe). When whole continents speak the same language that tends to happen. You mean like the USA, where I saw an ad in a shop for a bilingual shop assistant? Or is Spanish so like US English it doesn't count as a separate language? I'm not sure what point you are trying to make. We have people here from all over the earth, and enough illegal immigrants speaking Spanish to account for a population about the size of Ohio. But, Americans are mostly monolingual. ...point of fact. I believe the point is your generalized use of American. After all, Mexicans are Americans too, as well as Canadians, Peruvians and ... Unfortunately, there is no good word for USA-ian. United States Citizen is too long and awkward and United Statesian is ridiculous. The common usage of American for this is at best ambiguous, and definitely inaccurate (as well as chauvinistic, and rather insulting to other North and South Americans outside the US). -=- Larry -=- -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
On Sun, Mar 30, 2014 at 5:52 PM, Ben Finney ben+pyt...@benfinney.id.au wrote: Chris Angelico ros...@gmail.com writes: The problem isn't that I can't see what the comparisons are. It makes very good sense to bound a variable within constants; but you already know exactly where 2 is on the number line, so asking Is 2 between these two variables seems a bit odd. Maybe it's less so with the strong mathematical background, but it seems odd to me. I don't feel odd about asking the question “Is 2 between these two values?”. It's straightforward and concise. Can you explain better why you find it odd? Possibly because the variable between two constants is something I've done often (usually in the more explicit form of x min x max in a language without chained comparisons), usually bounds-checking some value. I've never had to ask whether a single constant has two variables, one on either side. But that's just that I've personally never done it; it doesn't mean nobody does it, by any means. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
Gregory Ewing greg.ew...@canterbury.ac.nz: a != b != c does *not* imply that a != c. At least it doesn't in Python; I've never seen any mathematicians write that, so I don't know what they would make of it. Any resemblance between mathematics notation and Python is purely coincidental. I must admit I had missed Python's chained comparisons until this discussion, but now I looked up the definition: comparison::= or_expr ( comp_operator or_expr )* comp_operator ::= | | == | = | = | != | is [not] | [not] in [...] Formally, if a, b, c, ..., y, z are expressions and op1, op2, ..., opN are comparison operators, then a op1 b op2 c ... y opN z is equivalent to a op1 b and b op2 c and ... y opN z, except that each expression is evaluated at most once. That means, in my opinion, that you should feel free to use chaining any way you see fit. Also, the rule is crystal-clear and easy to grasp: there's an implicit and there. It's another thing, then, if it was a good idea to include chaining there in the first place, but I trust the idea was properly vetted and double checked against possible parsing ambiguities. Even without chaining is not is a bit suspect: False is not 0 True False is (not 0) False False is not not not 0 File stdin, line 1 False is not not not 0 ^ SyntaxError: invalid syntax Marko -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Sun, 30 Mar 2014 01:48:27 -0500, Mark H Harris wrote: On 3/30/14 1:31 AM, Steven D'Aprano wrote: I'm not sure what point you are trying to make. We have people here from all over the earth, and enough illegal immigrants speaking Spanish to account for a population about the size of Ohio. *raises eyebrow* Did you intend to imply that it is only illegal immigrants who speak Spanish in the USA? Don't be silly, Steven, it doesn't become you. Given the sorts of patronising, condescending things you insist are true about non-Americans, such as their supposed inability to communicate in their own language on the Internet, I wasn't sure. The most recent US census found there are 38.5 million people in the US who primarily speak Spanish, and 45 million who speak it as their first or second language. In comparison, there are only an estimated 11 million illegal immigrants (of which only 7 million is from Mexico). https://en.wikipedia.org/wiki/Spanish_language_in_the_United_States Hilarious! That's part of the problem, um, its because they are *illegal* that the census bureau does not know about them in terms of exact numbers; its a nice effort though. The number of illegal immigrants is not estimated from the Census numbers directly. It's not like they have a tick box Are you in this country illegally?. Just because *you* don't know how illegal immigrant numbers are estimated, or what margin of error those estimates might have, don't make the mistake of imagining that any such effort is hilarious, a joke, or otherwise useless. Naturally the figure is *estimated*, I even said it was estimated, and gave it as a round number. If I had said there were 11,205,971 illegal immigrants in the USA as of last Tuesday, then you would have a good excuse to mock my spurious precision. Otherwise, not so much. America is a melting pot (always has been). We have thousands of ethnic groups living here and thousands of languages spoken here. Not really. There are under 350 languages spoken in the USA. Over 92% of the population speaking just two of them, English and Spanish, with Chinese a *very* distant third. Only eight languages are spoken by more than 1 million people. Even if you double that figure, to capture that one guy who speaks Gunwinyguan and other outliers, you still end up well under even a single thousand. The surprising thing to me about this is not that the number of languages is so low (there are about 6000-7000 languages in the world), but that it is so high. I would have predicted well under 100. After all, spoken language popularity is an excellent example of network effects: the more people who speak a language, the more valuable it is to speak the same language. Network effects explain why, out of the six or seven thousand languages in the world, just thirteen account for more than half the world's population: 1) Mandarin 2) Spanish 3) English 4) Hindi 5) Arabic 6) Portuguese 7) Bengali 8) Russian 9) Japanese 10) Punjabi 11) German 12) Javanese 13) Wu adding up to 51%. The next thirteen bring the total to 64%. (Figures are, naturally, approximate and subject to change.) All of them are in some place on the continuum of English as a second language; its the only way to survive here. Approximately 5% of the US population either do not speak English at all, or speak it poorly. That includes approximately half a million ASL speakers (American Sign Language, which is not a manual representation of English but an independent language in it's own right), the majority of whom are unable to speak or understand spoken English. Be careful of making sweeping generalisations like the only way to survive. Especially when they're so judgemental. It's not like there are gangs of armed militia hunting down deaf children and foreign grannies who only speak the language of their homeland. Well, maybe in Arizona. *wink* -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On Sun, 30 Mar 2014 00:32:58 -0700, Larry Hudson wrote: Unfortunately, there is no good word for USA-ian. United States Citizen is too long and awkward and United Statesian is ridiculous. The common usage of American for this is at best ambiguous, and definitely inaccurate (as well as chauvinistic, and rather insulting to other North and South Americans outside the US). Among fans of the British writer Terry Pratchett, the usual term is Merkins. Including among Merkin fans. -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Sun, Mar 30, 2014 at 9:35 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Network effects explain why, out of the six or seven thousand languages in the world, just thirteen account for more than half the world's population: 1) Mandarin 2) Spanish 3) English 4) Hindi 5) Arabic 6) Portuguese 7) Bengali 8) Russian 9) Japanese 10) Punjabi 11) German 12) Javanese 13) Wu adding up to 51%. The next thirteen bring the total to 64%. Where did that info come from? And more importantly, what does it count? Is that people's first language, or all languages known, or what? A bit of Googling brought me to a Wikipedia page [1] which quotes a similar figure of thirteen languages; that's talking about native speakers, and is talking about native speakers. But that may not be the most useful definition here. An alternative useful definition is accessibility: if you communicate a message in Mandarin and English, a large proportion of humans will be capable of understanding that message. Does it take the above thirteen to exceed 50% of the world by that definition? Or wording it another way, is there no set of twelve or less languages which will reach 50% of the world? There's another Wikipedia page [2] that tries to estimate total number of speakers, but it's nearly impossible to get any sort of accurate figure; it puts Mandarin at somewhere over a billion people, and English as another billion or so; that's coming up toward 50% right there (say, 1.5b each is 3b, out of a world population of 7b). Ball-park figures, those two plus Spanish (another half billion or so) would pretty much hit your half mark. I've no idea what point I'm trying to make here. Just poking around with numbers. :) ChrisA [1] https://en.wikipedia.org/wiki/List_of_languages_by_number_of_native_speakers [2] https://en.wikipedia.org/wiki/List_of_languages_by_total_number_of_speakers -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
In article j8-dne29t9g2varonz2dnuvz_qsdn...@giganews.com, Larry Hudson org...@yahoo.com wrote: I believe the point is your generalized use of American. After all, Mexicans are Americans too, as well as Canadians, Peruvians and ... Unfortunately, there is no good word for USA-ian. I believe Mexicans refer to us as norteamericanos in polite company. That's a little long for daily use, so more typically it's shortened to gringo. -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
In article 5337b4e4$0$29994$c3e8da3$54964...@news.astraweb.com, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: I think Johannes got it right: boolean logic is easier to reason about when there is a minimum of nots. I used to do a lot of digital logic design. In certain logic families, it's easier to build a NAND gate than an AND gate (and similarly, NOR is easier than OR). This leads to lots of inverted logic. Adding to the confusion, many designs would use active low logic, which means a 1 was represented by a low voltage, and a 0 by a high voltage. So, you quickly end up with gibberish like, not active low clear nand not active low enable clock. I'm glad I don't do that stuff any more. -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
On 2014-03-30 13:21, Roy Smith wrote: In article 5337b4e4$0$29994$c3e8da3$54964...@news.astraweb.com, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: I think Johannes got it right: boolean logic is easier to reason about when there is a minimum of nots. I used to do a lot of digital logic design. In certain logic families, it's easier to build a NAND gate than an AND gate (and similarly, NOR is easier than OR). This leads to lots of inverted logic. Adding to the confusion, many designs would use active low logic, which means a 1 was represented by a low voltage, and a 0 by a high voltage. So, you quickly end up with gibberish like, not active low clear nand not active low enable clock. I'm glad I don't do that stuff any more. When you're building with discrete logic chips, NAND gates are useful because you can use them as inverters too, which helps to keep the chip count down. -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On Sat, 29 Mar 2014 03:21:29 -0500, Mark H Harris wrote: On 3/29/14 1:03 AM, Chris Angelico wrote: http://forum.ecomstation.ru/ Prominent discussion forum, although that strives to be at least partially bilingual in deference to those of us who are so backward as to speak only English. Yes. Well, as the joke goes, if you're trilingual you speak three languages, if you're bilingual you speak two languages, if you're monolingual you're an American (well, that might go for Australia too, maybe). When whole continents speak the same language that tends to happen. I think that the Québécois and Mexicans might object to your characterisation of North America as speaking a single language. English is the primary lingua franca in various fields, such as aviation, diplomacy, trade and, yes, computing. But it's not the only lingua franca in common use: French and Spanish are the second and third most common languages used in international trade, and Arabic, Mandarin, Cantonese, Russian, and many others remain important regional and international lingua francas: https://en.wikipedia.org/wiki/List_of_lingua_francas English currently is the dominant international language, but it is not the only such language, and it's dominance is not so complete that other languages are second-class. One need only look at your spam folder, and see how much spam is sent in Chinese, Russian and other languages to realise that English hasn't even come close to taking over the planet yet. But none of which is really relevant to the question on hand. When people from France, Germany, Russia, Brazil and Japan get together on the Internet, they probably write English. When they are writing for themselves, they typically write in French, Germany, Russian, Brazilian Portuguese, and Japan. http://blog.gmane.org/gmane.comp.python.brasil http://blog.gmane.org/gmane.comp.accessibility.tanaguru http://blog.gmane.org/gmane.comp.apache.discussion.russian etc. [...] What I can tell you in my own experience, as an amateur radio operator (W0MHH, general class) who has communicated all over the earth (even to Soviet Russia), all my computer|radio comm was in English using Morse code sets, Latin characters, and ASCII. No one ever asked me to comm in Russian, or French, nor Italian, nor Tswana... Are you aware that the astronauts on the International Space Station have to be fluent in Russian? Hardly surprising, since the Soyuz rockets used to get to the ISS are made by Russians, maintained by Russians, and launched by Russians. All the controls and manuals are written in Russian. One might almost say that the lingua franca of space travel is Russian. You're experience suggests that the lingua franca of the amateur radio community is English. If you wanted to be an astronaut, you'd need to learn Russian. (Although I wonder whether the Chinese agree about that.) Whenever you have people from a broad range of languages getting together and needing to communicate, they need to agree on a common tongue. Often that's English. Often it is not. http://www.arabo.com/ (I searched for python, and got three hits: one in English and two in French.) By the way, in my view, 1991 is very recently; In 1991, there was no wireless, no mobile computing, hardly any public Internet outside of the universities. It was before the Eternal September, and only a few years after the Great Renaming. Python had just been released for the first time, and Windows 3.1 hadn't been (although 3.0 had). There was no Netscape, no Mosaic graphical web browsers. Steve Jobs hadn't returned to Apple yet, Apple was still losing money and mind- share, and Google didn't even exist. It was a different era. 1991 is 23 years ago. In computer years, I consider that almost eight generations, about the same as 160 years in human terms. from a computer historical standpoint too. I mean, think about it, computers have only existed since late 1940s and only in their modern context since about 1989. I didn't really start using unicode until about 5 years ago; python has only really used it since python3. right? No. Python 2.2 introduced Unicode. -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On Mar 30, 2014 9:26 AM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sat, 29 Mar 2014 03:21:29 -0500, Mark H Harris wrote: from a computer historical standpoint too. I mean, think about it, computers have only existed since late 1940s and only in their modern context since about 1989. I didn't really start using unicode until about 5 years ago; python has only really used it since python3. right? No. Python 2.2 introduced Unicode. Python 2.0 if the PEP 100 metadata is accurate. -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On Sun, 30 Mar 2014 01:22:55 -0500, Mark H Harris wrote: On 3/29/14 12:53 PM, Steven D'Aprano wrote: People have had localised code pages, and localised keyboards to enter characters in those code pages, for up to 30 years, if not longer. Nobody is arguing otherwise, Steven. It certainly seemed like you were. Having a code page for a local language is not the same thing as having software that supports your local language code page! Of course they're not the same, but localised software does exist. You're making the mistake of thinking that because you only see English-language software, no other software exists. But you are an English-speaker in an English-speaking country, of course nearly all the software you see is written for English speakers. But if you were in Spain, the software you buy would be in Spanish: http://www.sevenforums.com/general-discussion/123741-changing-language- localization.html More about localisation: http://blogs.msdn.com/b/oldnewthing/archive/2012/07/26/10333558.aspx http://support.apple.com/kb/HT4239?viewlocale=fr_FRlocale=fr_FR Software and code pages improved over time, but international communication (which is what I'm talking about) has always been done in English, using ASCII. That's simply not correct. Even if we limit always to mean since World War Two, it's still wrong. IBM was localising their computers for non- English markets before ASCII even existed, code pages was an IBM technology invented for EBCDIC-using mainframes before there were ASCII- using PCs. What is true is that English is the primary lingua franca on the Internet. But it's not the only one, and there are plenty of places on the Internet where people discuss things in their own language. Well except when Guido brought the ABC stuff to the states back in the day and had no way to do that except to fly himself (and the tape) personally. In some of those cases, the localisation was done by companies like IBM, Microsoft and Apple, realising that if they wanted to sell computers outside of the US, they needed to supply computers that were localised to their market. Unfortunately that happened way late. And even then, international communication was still done (and is still done) in English. And French. And Spanish. And Chinese. If you trade with most of Africa, knowing Arabic or French will probably be more useful than knowing English. Only until very recently (see my post to Chris) has unicode improved to the point where international comm can occur reliably enough (input, font, code points) to allow comm in languages other than English. Unicode has little to do with the ability to communicate in languages other than English. If you want to communicate in Greek, you don't need Unicode, you just need both parties to agree to use ISO-8859-7. If you want to communicate in Japanese, you could use Shift-JIS, or various others. Where Unicode comes into it is when you want to manage *mixed* communication. There's no way for me to include your ISO-8859-7 Greek text in my Shift-JIS Japanese document. I can use one, or the other, but not both. But with Unicode, I can use them both. [...] My point exactly. With the advent of the Internet, almost *all* comm is English with minor notable exceptions in today's environment. Not even close to almost all. Barely half of the Internet is English. If you only look in the English-speaking corners of the Internet, it is hardly surprising that you only see people speaking English. Even at the high-point, English was only 80% of the Internet, 20% (that's *one in five* websites) was non-English: http://www.theatlantic.com/past/docs/issues/2000/11/wallraff3.htm That was a decade ago, and as predicted, the percentage of the Internet which uses English has plummeted as more non-English speakers have got on the 'net. Today, only 56% of the Internet is English: http://w3techs.com/technologies/overview/content_language/all That figure is based on the one million most popular websites. If you include *all* websites, you'll find the English percentage is even lower, and quite likely under 50%. https://en.wikipedia.org/wiki/Languages_used_on_the_Internet Some other points to consider: 44% of WordPress sites are non-English: http://venturebeat.com/2013/07/27/19-percent-of-the-web-runs-on-wordpress/ which is representative of the broader Internet. And since 2001, while the use of English on the Internet grew by 281%, other languages have grown much faster: - Spanish (743%) - Chinese (1,277%) - Russian (1,826%) - Arabic (2,501%) -- Steven D'Aprano http://import-that.dreamwidth.org/ -- https://mail.python.org/mailman/listinfo/python-list
writing reading from a csv or txt file
Hi I have 3 csv files with a list of 5 items in each. rainfall in mm, duration time,time of day,wind speed, date. I am trying to compare the files. cutting out items in list list. ie:- first file (rainfall2012.csv)rainfall, duration,time of day,wind speed,date. first file (rainfall2013.csv)rainfall, duration,time of day,wind speed,date. I would like to pick out maybe rainfalls and duration's and measure against say years. I would like to very the items from the rows. could you please advise me where i can find such information. or book, textbook. -- https://mail.python.org/mailman/listinfo/python-list
Re: writing reading from a csv or txt file
I am trying to compare the files. cutting out items in list list. ie:- first file (rainfall2012.csv)rainfall, duration,time of day,wind speed,date. first file (rainfall2013.csv)rainfall, duration,time of day,wind speed,date. I would like to pick out maybe rainfalls and duration's and measure against say years. Could you show us the first, say, three rows from each file, plus what you would like the first three or six lines of output to be? -- https://mail.python.org/mailman/listinfo/python-list
RE: writing reading from a csv or txt file
Hi I have 3 csv files with a list of 5 items in each. rainfall in mm, duration time,time of day,wind speed, date. I am trying to compare the files. cutting out items in list list. ie:- first file (rainfall2012.csv)rainfall, duration,time of day,wind speed,date. first file (rainfall2013.csv)rainfall, duration,time of day,wind speed,date. I would like to pick out maybe rainfalls and duration's and measure against say years. I would like to very the items from the rows. could you please advise me where i can find such information. or book, textbook. How about we help you here.. So if you want to compare by year, you want to read all the rows in and perform some math, because I can't help myself, I push this into sqlite at least but that's probably overkill for you (besides the limitless benefits:)). You want to store some state while you iterate over each row in the csv, appending data, then finally performing some statistical math on the collection. You will do this for each file, then finally aggregate your results. jlc -- https://mail.python.org/mailman/listinfo/python-list
Re: writing reading from a csv or txt file
On 03/30/2014 12:05 PM, mtcpl...@googlemail.com wrote: Hi I have 3 csv files with a list of 5 items in each. rainfall in mm, duration time,time of day,wind speed, date. I am trying to compare the files. cutting out items in list list. ie:- first file (rainfall2012.csv)rainfall, duration,time of day,wind speed,date. first file (rainfall2013.csv)rainfall, duration,time of day,wind speed,date. I would like to pick out maybe rainfalls and duration's and measure against say years. I would like to very the items from the rows. could you please advise me where i can find such information. or book, textbook. How is this a Python question? There is a standard module included with Python for reading CSV files. Would you like to know how to use that? You can find documentation on it here: http://docs.python.org/3/library/csv.html Gary Herron -- https://mail.python.org/mailman/listinfo/python-list
Re: checking if two things do not equal None
Roy Smith wrote: Adding to the confusion, many designs would use active low logic, which means a 1 was represented by a low voltage, and a 0 by a high voltage. So, you quickly end up with gibberish like, not active low clear nand not active low enable clock. There are ways of dealing with that in schematic diagrams. For exammple, if you have two active-low signals A and B and want to express A is active or B is active, you draw an OR gate symbol with inversion circles on the inputs. That's equivalent to a NAND gate, but makes the intention clear. Schematics drawn that way are much easier to follow than ones that only use the inverted-output versions of the symbols. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On Sun, 30 Mar 2014 11:44:13 +0100, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 30 Mar 2014 00:32:58 -0700, Larry Hudson wrote: Unfortunately, there is no good word for USA-ian. United States Citizen is too long and awkward and United Statesian is ridiculous. The common usage of American for this is at best ambiguous, and definitely inaccurate (as well as chauvinistic, and rather insulting to other North and South Americans outside the US). Among fans of the British writer Terry Pratchett, the usual term is Merkins. Including among Merkin fans. Many of whom even know what a merkin is, and use the term anyway. -- Rhodri James *-* Wildebeest Herder to the Masses -- https://mail.python.org/mailman/listinfo/python-list
Examples of modern GUI python programms
Id like to ask.. do you know any modern looking GUI examples of windows software written in python? Something like this maybe: http://techreport.com/r.x/asus-x79deluxe/software-oc.jpg (or hopefully something like this android look: http://chromloop.com/wp-content/uploads/2013/07/Skype-4.0-Android-screenshot.jpg). What i need is to develop an android looking program (entirelly in python) for windows, but dunno if this is possible (most propably is), and which tool between those would help me most: tkinter - wxpython - pyqt - pygtk . Any examples and suggestions are most welcome. -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
On 2014-03-30 23:57, Rhodri James wrote: On Sun, 30 Mar 2014 11:44:13 +0100, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 30 Mar 2014 00:32:58 -0700, Larry Hudson wrote: Unfortunately, there is no good word for USA-ian. United States Citizen is too long and awkward and United Statesian is ridiculous. The common usage of American for this is at best ambiguous, and definitely inaccurate (as well as chauvinistic, and rather insulting to other North and South Americans outside the US). Among fans of the British writer Terry Pratchett, the usual term is Merkins. Including among Merkin fans. Many of whom even know what a merkin is, and use the term anyway. Isn't that what some said it sounded like when George W Bush said it? My fellow 'mercns, ... -- https://mail.python.org/mailman/listinfo/python-list
Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
Steven D'Aprano wrote: On Sun, 30 Mar 2014 00:32:58 -0700, Larry Hudson wrote: Unfortunately, there is no good word for USA-ian. United States Citizen is too long and awkward and United Statesian is ridiculous. The common usage of American for this is at best ambiguous, and definitely inaccurate (as well as chauvinistic, and rather insulting to other North and South Americans outside the US). Among fans of the British writer Terry Pratchett, the usual term is Merkins. Including among Merkin fans. Tom Sharpe was there first, I think. By the way, his books are hilarious. -- https://mail.python.org/mailman/listinfo/python-list
Re: Examples of modern GUI python programms
On 03/30/2014 05:16 PM, D. Xenakis wrote: What i need is to develop an android looking program (entirelly in python) for windows, but dunno if this is possible (most propably is), and which tool between those would help me most: tkinter - wxpython - pyqt - pygtk . Any examples and suggestions are most welcome. Your best bet is to use PyQt. I bet you can make some android-looking UIs using QtQuick (Javascript) with a bit of Python glue. -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On 3/30/14 5:35 AM, Steven D'Aprano wrote: On Sun, 30 Mar 2014 01:48:27 -0500, Mark H Harris wrote: Don't be silly, Steven, it doesn't become you. Given the sorts of patronising, condescending things you insist are true about non-Americans, such as their supposed inability to communicate in their own language on the Internet, I wasn't sure. You just crossed the boundary from silly to asinine. 1) Mandarin 2) Spanish 3) English 4) Hindi 5) Arabic 6) Portuguese 7) Bengali 8) Russian 9) Japanese 10) Punjabi 11) German 12) Javanese 13) Wu adding up to 51%. The next thirteen bring the total to 64%. Where the heck did you get that!?! ...wow. (Figures are, naturally, approximate and subject to change.) no doubt. *wink* -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On 3/30/14 5:35 AM, Steven D'Aprano wrote: Approximately 5% of the US population either do not speak English at all, or speak it poorly. That includes approximately half a million ASL speakers (American Sign Language, which is not a manual representation of English but an independent language in it's own right), the majority of whom are unable to speak or understand spoken English. Steven, you have trolled us over to the left edge of outer left field all the way back at the fence, dude, seriously--- and then you dropped the ball. Geeeze... error. My point at the beginning was that we need a universal unicode input device. Its time to think past US_104 and en_US. Come in out of left field. As long as I'm passing along my dreams to everyone, we also need a universal translator on the uptake. In other words, everyone inputs from a universal encoder, and every browser has the option of on-demand translation (or not). Its a little like google translate, but on-demand, and its standard, and it works everywhere with every language. Everyone keys input in their own heart language (first, primary language) and then the internet browser allows for display of first language (if the coding is the same) and translates if the coding is different (all configurable of course). Yes, the apps are in the cloud. What say you? We all type in our own language, and everyone else gets to read it in their own language. Its kinda like the day of Pentecost (except that its print instead of audio). marcus -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Mon, Mar 31, 2014 at 3:57 PM, Mark H Harris harrismh...@gmail.com wrote: As long as I'm passing along my dreams to everyone, we also need a universal translator on the uptake. In other words, everyone inputs from a universal encoder, and every browser has the option of on-demand translation (or not). Its a little like google translate, but on-demand, and its standard, and it works everywhere with every language. Everyone keys input in their own heart language (first, primary language) and then the internet browser allows for display of first language (if the coding is the same) and translates if the coding is different (all configurable of course). Yes, the apps are in the cloud. What say you? We all type in our own language, and everyone else gets to read it in their own language. Its kinda like the day of Pentecost (except that its print instead of audio). And Pentecost required direct intervention of the all-powerful God of the universe. Any less, and you'll run into translation difficulties. It certainly cannot be automated; even done manually by people expert in both the source and target languages, translation is imperfect. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On 3/30/14 1:31 AM, Steven D'Aprano wrote: The most recent US census found there are 38.5 million people in the US who primarily speak Spanish, and 45 million who speak it as their first or second language. In comparison, there are only an estimated 11 million illegal immigrants (of which only 7 million is from Mexico). The following link shows plenty of language stats (most of them differ from yours markedly; the estimates are just guesses really). The main point of the link is the status on English as an official language. 28 out of 50 states have legislated English as the official language; meaning, that you either speak and write English, or you're going to have a really tough time participating in culture, business, government, and recreation. http://en.wikipedia.org/wiki/Languages_of_the_United_States#Official_language_status marcus -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On 3/31/14 12:05 AM, Chris Angelico wrote: What say you? We all type in our own language, and everyone else gets to read it in their own language. Its kinda like the day of Pentecost (except that its print instead of audio). And Pentecost required direct intervention of the all-powerful God of the universe. Any less, and you'll run into translation difficulties. It certainly cannot be automated; even done manually by people expert in both the source and target languages, translation is imperfect. Truth. Well, like I said, its a dream. And, we are finally at that point in time space (fast computers, elegant programming languages, network, cloud apps, desire) where I think we could tackle universal translation. On the other hand, would it be easier to simply move everyone to a neutral lingua franca? For instance, lets say, biblical Greek. In other words, the entire world learns a new (dead) language. Then, we all move forward speaking ONE language and we forget the translation thing altogether? The reason that won't work is that everyone needs their heart language (as what it means to be human, and as what it means to be 'them'). How we speak is how we think, and feel. Its a conundrum for sure. marcus -- https://mail.python.org/mailman/listinfo/python-list
Re: OFF TOPIC Spanish in the USA [was Re: Explanation of this Python language feature?]
On Mon, Mar 31, 2014 at 4:23 PM, Mark H Harris harrismh...@gmail.com wrote: The main point of the link is the status on English as an official language. 28 out of 50 states have legislated English as the official language; meaning, that you either speak and write English, or you're going to have a really tough time participating in culture, business, government, and recreation. http://en.wikipedia.org/wiki/Languages_of_the_United_States#Official_language_status Considering how much is done to ensure that illiterate people can still comprehend critical information (important signage, warnings, traffic directions, etc, etc, etc), I think we can assume that someone who speaks some language other than English will still manage to do a lot of things. Plus, plenty of official documents are available in many languages; the legislated official language just means that the English version is the only one that is guaranteed to be there. Go to any one of the states you've mentioned, where English is the sole official language, and pick up any government form - something fairly important, like applying for a passport or something. How many languages is it available in? They might all be on the same form, or maybe you have to explicitly request it in Spanish, but I expect it'll be translated into several non-official languages for the convenience of those whose English isn't as good as their (switch to GLaDOS voice) Insert Subject Native Language Here (switch voice back). But none of this has anything to do with the original point, namely that there are people who communicate in other languages. Even if you have to learn English for the sake of official documents, you won't necessarily want to chat with your friends in English. If you pick up the phone and talk to someone, you can use whatever language you want; if you switch to email, chances are you still can. And that's something that's been true since the dawn of email, which predates Unicode by a slight margin... of a decade or so. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Examples of modern GUI python programms
On Sunday, March 30, 2014 9:16:06 PM UTC-5, Michael Torrie wrote: On 03/30/2014 05:16 PM, D. Xenakis wrote: What i need is to develop an android looking program (entirelly in python) for windows, but dunno if this is possible (most propably is), and which tool between those would help me most: tkinter - wxpython - pyqt - pygtk . Any examples and suggestions are most welcome. Your best bet is to use PyQt. I bet you can make some android-looking UIs using QtQuick (Javascript) with a bit of Python glue. Well, I wouldn't exactly say that Qt is the way to go just yet... The author needs to weigh the benefits of each toolkit and make a decision for themselves. As far as Qt is concerned, it is a bit more geared towards mobile apps at this point in its python life. It is a bit nicer with the animated stuff also. wxPython on the other hand has way better community support than QT side and has been around longer, so that may be a consideration. Tk is alright and bundled with python but requires more work than the others and isn't always native looking without a bit of extra work. Overall if you are fine with using a GUI builder for the GUI framework, then QT has a nice put-it-all-together IDE. If you are looking for a really customized(hand-tweakable) GUI with relative hassle, then I would recommend wxPython or if you know Tk this would be ok for the majority of stuff, but requires a bit more work. Another thing to consider is that if you are actually wanting this to work on a android or mobile device QT would be a better choice. Especially if touch support is an option. If you are only wanting it to look like android themed app, the other choices provide better long term benefits. As far as pygtk, that fairs better with linux, and in my opinion could use some updates platform-wise rounding the bugs out overall. My opinion would be wxPython if not actually using for a mobile, or PySide if you are. Both of these have acceptable licenses if you want to go commercial also without having to pay for commercial library usage. -- https://mail.python.org/mailman/listinfo/python-list
[issue11704] functools.partial doesn't create bound methods
Nick Coghlan added the comment: With the introduction of functools.partialmethod in 3.4, marking this older docs issue as a won't fix -- resolution: - wont fix stage: - committed/rejected status: open - closed type: - enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11704 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14198] Backport parts of the new memoryview documentation
Changes by Nick Coghlan ncogh...@gmail.com: -- versions: -Python 3.1, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14198 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21074] Too aggressive constant folding
Nick Coghlan added the comment: I'm marking this as a duplicate of issue 11549 (which is about building out an AST optimiser), mostly because I don't think this kind of parameter tweaking makes sense with the current peephole optimiser. With a more sophisticated Python implemented optimiser earlier in the pipeline, it becomes more reasonable to make smarter decisions about space/speed trade-offs when dealing with sequence repetition, and even just really large integer values. -- nosy: +ncoghlan resolution: - duplicate status: open - closed superseder: - Build-out an AST optimizer, moving some functionality out of the peephole optimizer ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21074 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1191964] asynchronous Subprocess
Josiah Carlson added the comment: Due to some rumblings over on the mentors list and python-dev, this is now getting some love. Guido has stated that something should make it into the subprocess module for 3.5 in this email: https://groups.google.com/d/msg/dev-python/I6adJLIjNHk/Usrvxe_PVJIJ His suggested API is: proc.write_nonblocking(data) data = proc.read_nonblocking() data = proc.read_stderr_nonblocking() I've implemented the API for Windows and Linux, and below are my findings. On the Linux side of things, everything seems to be working more or less as expected, though in writing tests I did need to add an optional argument to qcat.py in order to have it flush its stdout to be able to read from the parent process. Odd, but whatever. Also, Richard Oudkerk's claims above about not needing to use fcntl to swap flags is not correct. It's necessary to not block on reading, even if select is used. Select just guarantees that there is at least 1 byte or a closed handle, not that your full read will complete. On the Windows side of things, my assumptions about WriteFile() were flawed, and it seems that the only way to make it actually not block if/when the outgoing buffer is full is to create a secondary thread to handle the writing*. I've scoured the MSDN docs and there doesn't seem to be an available API for interrogating the pipe to determine whether the buffer is full, how full it is, or whether the write that you'd like to do will succeed or block. * This applies even with the use of asyncio. Because the intent for the call is to return more or less immediately, a thread still has to be created to handle the event loop for IO completion, which means that asyncio can't prevent the use of threads and not block without basically integrating an event loop into the caller. Considering that the Windows communicate() method already uses threads to handle reading and writing, I don't believe it is a big deal to add it for this situation too. Any major objections? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1191964 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1191964] asynchronous Subprocess
Changes by Josiah Carlson josiah.carl...@gmail.com: -- versions: +Python 3.5 -Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1191964 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20022] modernize the Mac bundlebuilder.py script
Roundup Robot added the comment: New changeset 3cf72994d5ae by Ned Deily in branch 'default': Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds. http://hg.python.org/cpython/rev/3cf72994d5ae -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20022 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20022] Eliminate the use of the deprecated bundlebuilder.py script in OS X builds
Ned Deily added the comment: Thanks for the patch, Ronald. I modified it a bit and also removed bundlebuilder.py from the source tree. Applied for release in 3.5.0. -- resolution: - fixed stage: patch review - committed/rejected status: open - closed title: modernize the Mac bundlebuilder.py script - Eliminate the use of the deprecated bundlebuilder.py script in OS X builds ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20022 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21074] Too aggressive constant folding
STINNER Victor added the comment: The change that I proposed (check parameters before compute the result is simple), whereas implementing a new optimizer working on the AST requires much more work. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21074 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- components: Interpreter Core files: known_hash.diff keywords: patch nosy: rhettinger priority: normal severity: normal stage: patch review status: open title: Extend the PyDict C API to handle cases where the hash value in known type: enhancement versions: Python 3.5 Added file: http://bugs.python.org/file34666/known_hash.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Changes by Raymond Hettinger raymond.hettin...@gmail.com: Added file: http://bugs.python.org/file34667/applied_known_hash.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
New submission from Raymond Hettinger: Propose adding two functions, PyDict_GetItem_KnownHash() and PyDict_SetItem_KnownHash(). It is reasonably common to make two successive dictionary accesses with the same key. This results in calling the hash function twice to compute the same result. For example, the technique can be used to speed-up collections.Counter (see the attached patch to show how). In that patch, the hash is computed once, then used twice (to retrieve the prior count and to store the new count. There are many other places in the standard library that could benefit: Modules/posixmodule.c 1254 Modules/pyexpat.c 343 and 1788 and 1798 Modules/_json.c 628 and 1446 and 1515 and 1697 Modules/selectmodule.c 465 Modules/zipmodule.c 137 Objects/typeobject.c 6678 and 6685 Objects/unicodeobject.c 14997 Python/_warnings.c 195 Python/compile.c 1134 Python/import.c 1046 and 1066 Python/symtable 671 and 687 and 1068 A similar technique has been used for years in the Objects/setobject.c internals as a way to eliminate unnecessary calls to PyObject_Hash() during set-to-set and set-to-dict operations. The benefit is biggest for objects such as tuples or user-defined classes that have to recompute the hash on every call on PyObject_Hash(). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Changes by Raymond Hettinger raymond.hettin...@gmail.com: Added file: http://bugs.python.org/file34668/double_counter_hash.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21102] 3.4.0 PDF (a4,letter) and EPUB documentation missing
New submission from koobs:
python-3.4.0-docs-pdf-letter.{zip,tar.bz2}
python-3.4.0-docs-pdf-letter.{zip,tar.bz2}
are missing from:
https://www.python.org/ftp/python/doc/3.4.0/
/current/ also still points to 3.3.x documentation:
https://www.python.org/ftp/python/doc/current/
--
assignee: docs@python
components: Documentation
messages: 215176
nosy: docs@python, koobs
priority: normal
severity: normal
status: open
title: 3.4.0 PDF (a4,letter) and EPUB documentation missing
versions: Python 3.4
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[issue21102] 3.4.0 PDF (a4,letter) and EPUB documentation missing
koobs added the comment:
Missing files was supposed to read:
python-3.4.0-docs-pdf-a4.{zip,tar.bz2}
python-3.4.0-docs-pdf-letter.{zip,tar.bz2}
python-3.4.0-docs-epub.{zip,tar.bz2}
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[issue16716] Deprecate OSError aliases in the doc
Changes by priya priyapappachan...@gmail.com: -- keywords: +patch Added file: http://bugs.python.org/file34669/exception.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16716 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1191964] asynchronous Subprocess
Richard Oudkerk added the comment: Using asyncio and the IOCP eventloop it is not necessary to use threads. (Windows may use worker threads for overlapped IO, but that is hidden from Python.) See https://code.google.com/p/tulip/source/browse/examples/child_process.py for vaguely expect-like interaction with a child python process which works on Windows. It writes commands to stdin, and reads results/tracebacks from stdout/stderr. Of course, it is also possible to use overlapped IO directly. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1191964 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Changes by Serhiy Storchaka storch...@gmail.com: -- nosy: +serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Serhiy Storchaka added the comment: This patch breaks lexicographic ordering of tuples: (1, 2) (1, 2, 0) (1, 3) -- nosy: +serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Changes by Serhiy Storchaka storch...@gmail.com: -- Removed message: http://bugs.python.org/msg215179 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Changes by Antoine Pitrou pit...@free.fr: -- nosy: +tim.peters ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Changes by STINNER Victor victor.stin...@gmail.com: -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1191964] asynchronous Subprocess
Changes by janzert janz...@janzert.com: -- nosy: +janzert ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1191964 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Antoine Pitrou added the comment: Is there any benefit in making them public API functions? -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1697175] winreg module for cygwin?
Martin v. Löwis added the comment: Closing as out of date. -- resolution: - out of date status: languishing - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1697175 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21102] 3.4.0 PDF (a4,letter) and EPUB documentation missing
Georg Brandl added the comment: Fixed the symlink. Larry, where did you put the other archives? -- assignee: docs@python - larry nosy: +georg.brandl, larry ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21102 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21085] compile error Python3.3 on Cygwin
Martin v. Löwis added the comment: dellair jie: would you like to work on a patch? It's fine if not, but it may then be that there is no resolution to this issue for the coming months or years (unless somebody else volunteers to write a patch). Running configure should have created pyconfig.h. Please report what this file has; pyconfig.h.in is not configured. -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21085 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21102] 3.4.0 PDF (a4,letter) and EPUB documentation missing
Benjamin Peterson added the comment: Added missing docs releases. -- nosy: +benjamin.peterson resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21102 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20924] openssl init 100% CPU utilization
Martin v. Löwis added the comment: As Antoine says: if the socket is *really* in blocking mode, then SSL_do_handshake should block until the handshake if fully complete. It should not return SSL_ERROR_WANT_READ in this case. If you have managed to build Python for yourself to diagnose this further, please add a call to ioctlsocket in this loop to verify that the socket is in blocking mode. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20924 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Raymond Hettinger added the comment: Is there any benefit in making them public API functions? Originally, I was going to suggest them as internal functions, but the variety of use cases in the standard library suggested that third-party C extensions would benefit as well. Since this isn't functionality a user can create themselves, a public function is the only way to expose this service. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value in known
Alex Gaynor added the comment: Would it be reasonable to develop a Python API for this? If C functions have a need to do this, surely Python code does as well. -- nosy: +alex ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21100] Micro-optimization for tuple comparison
Roundup Robot added the comment: New changeset 16fd3f4c9128 by Raymond Hettinger in branch 'default': Issue 21100: Amazingly, tuple lexicographic ordering was untested. http://hg.python.org/cpython/rev/16fd3f4c9128 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21100 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21103] Encoding str to IDNA with ellipsis decomposes to empty labels
New submission from Christopher Foo:
When encoding a string with the IDNA codec I expected that it will always raise
an exception with empty labels. When I do this
'example.c…'.encode('idna').decode('ascii')
it returns
'example.c...'
instead of raising UnicodeError. The original string ends with U+2026
HORIZONTAL ELLIPSIS if you can't see it clearly. These strings are coming from
web pages in a web crawler.
I tested this on Python 3.4, 3.3.2, 2.7.5, 2.6.9.
--
components: Library (Lib)
messages: 215189
nosy: chfoo
priority: normal
severity: normal
status: open
title: Encoding str to IDNA with ellipsis decomposes to empty labels
type: behavior
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[issue21101] Extend the PyDict C API to handle cases where the hash value is known
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- title: Extend the PyDict C API to handle cases where the hash value in known - Extend the PyDict C API to handle cases where the hash value is known ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21104] Read from file aborted
New submission from Alex Grinko: When reading from text file on Windows Python ends loop on character 0x1A sample.py: number = 0 with open(sample.txt,'r') as f: for line in f: number += 1 print line print File has 8 lines, but Python could read only ,number -- components: Windows files: sample.txt messages: 215190 nosy: Alex.Grinko priority: normal severity: normal status: open title: Read from file aborted type: behavior versions: Python 2.7, Python 3.3 Added file: http://bugs.python.org/file34670/sample.txt ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21104 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21105] functools.partialmethod example doesn't actually work
New submission from Alex Gaynor: Specifically the example at: https://docs.python.org/3/library/functools.html?highlight=functools#functools.partialmethod ``_alive`` isn't actually assigned before the example tries to read it. Running this code at a for-real REPL results in: class Cell(object): ... @property ... def alive(self): ... return self._alive ... def set_state(self, state): ... self._alive = bool(state) ... import functools ... set_alive = functools.partialmethod(set_state, True) ... set_dead = functools.partialmethod(set_state, False) ... c = Cell() c.alive Traceback (most recent call last): File stdin, line 1, in module File stdin, line 4, in alive AttributeError: 'Cell' object has no attribute '_alive' -- assignee: docs@python components: Documentation keywords: easy messages: 215191 nosy: alex, docs@python priority: normal severity: normal status: open title: functools.partialmethod example doesn't actually work versions: Python 3.4, Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21105 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21101] Extend the PyDict C API to handle cases where the hash value is known
Raymond Hettinger added the comment: Would it be reasonable to develop a Python API for this? I suspect that in pure Python, the overhead would exceed the benefit. Current code: d[key] = d[key] + 1 Effort to save a double hash: h = hash(key) c = d.getitem_known_hash(key, hash) d.setitem_known_hash(key, hash, c + 1) In PyPy, the second code sample might actually be faster that the first, but all the other pythons suffer from interpreter overhead, a double dict lookup for the hash() function, two dict lookups just to find the new methods, allocating a bound method, and forming two argument tuples. There is also an API design issue. The pure python core datatype APIs are designed in a way to encourage higher level thinking (that is why we can't directly manage hash table sparsity or list over-allocation for example). In contrast, the C API is aimed at users who seek additional control and optimization at a lower level than the core language provides. We tend to expose a number of tools at the C level that would be inappropriate for higher-level code. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21101 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11824] freeze.py broken due to ABI flags
Roundup Robot added the comment: New changeset 4e37a4a036c6 by Martin v. Löwis in branch '3.4': Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge. http://hg.python.org/cpython/rev/4e37a4a036c6 New changeset 1b6fc88ae3f5 by Martin v. Löwis in branch 'default': Merge 3.4: Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge. http://hg.python.org/cpython/rev/1b6fc88ae3f5 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11824 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11824] freeze.py broken due to ABI flags
Martin v. Löwis added the comment: Thanks for the patch. Closing this issue as it only deals with the ABI flags; the remaining issues with freeze are dealt with elsewhere. -- nosy: +loewis resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11824 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21105] functools.partialmethod example doesn't actually work
Roundup Robot added the comment: New changeset ed81acc970d9 by Benjamin Peterson in branch '3.4': make partialmethod example work (closes #21105) http://hg.python.org/cpython/rev/ed81acc970d9 New changeset b8a76485b5ed by Benjamin Peterson in branch 'default': merge 3.4 (#21105) http://hg.python.org/cpython/rev/b8a76485b5ed -- nosy: +python-dev resolution: - fixed stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21105 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16047] Tools/freeze no longer works in Python 3
Roundup Robot added the comment: New changeset 001a6dc996e7 by Martin v. Löwis in branch '3.4': Issue #16047: Fix module exception list and __file__ handling in freeze. http://hg.python.org/cpython/rev/001a6dc996e7 New changeset 87ded2fdac4b by Martin v. Löwis in branch 'default': Merge 3.4 (#16047) http://hg.python.org/cpython/rev/87ded2fdac4b -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16047 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16047] Tools/freeze no longer works in Python 3
Martin v. Löwis added the comment: Thanks for the patch. It seems to work now. http://buildbot.python.org/all/builders/AMD64%20Ubuntu%20LTS%20Freeze%203.x/builds/9 -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16047 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11549] Build-out an AST optimizer, moving some functionality out of the peephole optimizer
Changes by Berker Peksag berker.pek...@gmail.com: -- nosy: +berker.peksag ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11549 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21103] Encoding str to IDNA with ellipsis decomposes to empty labels
Martin v. Löwis added the comment: I believe this behavior is correct wrt. RFC 3490. In the input, the last label is c…, which is not empty. It is passed to ToASCII, which normalizes the ellipsis to If UseSTD3ASCIIRules was true, conversion would fail as it yields . (\x2E). However, Python choses not to set UseSTD3ASCIIRules (and instead leaves it to the DNS server to decide whether the name is valid). I believe this is actually a bug in the RFC, which should ban . from the the set of conversion results regardless of UseSTD3ASCIIRules. However, since this RFC is superseded, you probably won't get anybody to confirm this view. -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21103 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21103] Encoding str to IDNA with ellipsis decomposes to empty labels
R. David Murray added the comment: For whatever it is worth, it looks like rfc 5892 marks U+2026 as disallowed. -- nosy: +r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21103 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
New submission from Vivek Jain: Python 3 still uses an old-style Mac folder icon in its installer (https://github.com/python-git/python/blob/master/Mac/Icons/Python%20Folder.icns?raw=true) that looks out of place on recent Macs. I created a quick replacement that is higher res and fits in better. -- assignee: ronaldoussoren components: Macintosh files: Python Folder.icns messages: 215200 nosy: ronaldoussoren, viveksjain priority: normal severity: normal status: open title: Updated Mac folder icon type: enhancement versions: Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5 Added file: http://bugs.python.org/file34671/Python Folder.icns ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Martin v. Löwis added the comment: Can you please submit a contributor form, and indicate that you are willing to license the icon under this agreement? -- nosy: +loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Martin v. Löwis added the comment: We should probably also ask for the PSF's permission (from the trademark committee) to use this specific modification of the logo in CPython. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Changes by Ned Deily n...@acm.org: -- assignee: ronaldoussoren - ned.deily nosy: +ned.deily versions: -Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21104] Read from file aborted
eryksun added the comment:
AFAIK, this doesn't affect Python 3 under normal circumstances. A file could be
manually set to text mode by calling msvcrt.setmode(f.fileno(), os.O_TEXT), but
that's out of the norm.
In Python 2, on Windows interpreting ctrl+z (0x1a) as end-of-file is normal
behavior in text mode. Read the remarks about [t]ext mode in the description of
Microsoft's fopen implementation:
http://msdn.microsoft.com/en-us/library/yeby3zcb%28v=vs.90%29.aspx
If you use Python's universal newlines mode, e.g. open('sample.txt', 'rU'),
then the underlying file is opened in binary mode and therefore will not
interpret ctrl+z as the end-of-file marker.
--
nosy: +eryksun
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[issue21106] Updated Mac folder icon
Vivek Jain added the comment: Submitted the patch, and I license the icon under the PSF contributor agreement. To make the icon, I used: (1) the default Apple folder icon as a starting point and (2) the Python icon from https://www.python.org/community/logos/ (but with modified colors). For (1), not sure if there are any copyright issues involved and if so how to get proper permission from Apple. I'm guessing the old icon also used the default Mac folder icon at the time. For (2), I defer to your expertise to find out the right people to contact to get it approved. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Vivek Jain added the comment: By Submitted the patch I meant Submitted the contributor agreement. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Ezio Melotti added the comment: Regarding the Python logo, you should write to psf-tradema...@python.org, tell them that you used the logo for the icon and add a link to this issue. I'm sure they will be happy to let you use it, but it's good to let them know. -- nosy: +ezio.melotti stage: - patch review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1599254] mailbox: other programs' messages can vanish without trace
David Watson added the comment:
On Sun 23 Mar 2014, David Watson wrote:
There actually isn't a test for the original locking issue, as
the tests all use the mailbox API, which doesn't provide a way to
turn off dot-locking. ...
On second thought, the underlying error doesn't actually have
anything to do with locking - another process can open the
mailbox, and mailbox.py can replace the file before that process
even tries to lock it. Andrew's test_concurrent_append()
originally *did* test for this, but commit c37cb11b546f changed
the single-file mailbox classes to just sync the file rather than
replacing it when messages have only been added, as in that test,
meaning it's no longer effective (for that issue at least).
I've now made a test for the original renaming-vs-copying issue
which just uses the simple _subprocess mechanism that the other
tests use, rather than trying to set up any special locking
conditions. I've also split the tests into two patches -
mailbox-tests-2.7-part1-for-copy-back.diff has the test for the
original issue, and passes with the copy-back patch applied,
while mailbox-tests-2.7-part2.diff applies on top and includes
the rest (these involve the separate issues around rereading, and
mostly fail).
--
Added file:
http://bugs.python.org/file34672/mailbox-tests-2.7-part1-for-copy-back.diff
Added file: http://bugs.python.org/file34673/mailbox-tests-2.7-part2.diff
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue1599254
___# HG changeset patch
# Parent a293c01337a62718938d9639653cf1b8dfffa054
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -13,6 +13,7 @@ from test import test_support
import unittest
import mailbox
import glob
+from contextlib import contextmanager
try:
import fcntl
except ImportError:
@@ -21,6 +22,27 @@ except ImportError:
# Silence Py3k warning
rfc822 = test_support.import_module('rfc822', deprecated=True)
+try:
+import multiprocessing
+except ImportError:
+multiprocessing = None
+else:
+@contextmanager
+def child_process(func, *args, **kwargs):
+Context manager to run a function concurrently in a child process.
+
+Runs func(*args, **kwargs) in a subprocess using
+multiprocessing and waits for it to terminate.
+
+
+process = multiprocessing.Process(target=func, args=args,
kwargs=kwargs)
+try:
+process.start()
+yield
+finally:
+process.join()
+
+
class TestBase:
def _check_sample(self, msg):
@@ -45,6 +67,53 @@ class TestBase:
test_support.unlink(target)
+def add_message(factory, path, msg):
+# Add msg to mailbox at path, using mailbox instance returned
+# by factory.
+mbox = factory(path)
+try:
+mbox.lock()
+mbox.add(msg)
+finally:
+mbox.close()
+
+def add_two_delete_one(factory, path, msg1, msg2):
+# Add msg1 and msg2 to mailbox at path, then delete msg1.
+# Uses mailbox instance returned by factory.
+mbox = factory(path)
+try:
+mbox.lock()
+key = mbox.add(msg1)
+mbox.add(msg2)
+# Flushing out two messages then deleting one ensures that for
+# the single-file mailbox formats, the subsequent flush has to
+# rewrite the mailbox.
+mbox.flush()
+del mbox[key]
+mbox.flush()
+finally:
+mbox.close()
+
+def only_yield():
+yield
+
+def child_func(to_child, from_parent, child, child_args):
+# Used by _subprocess method below. Waits for Connection object
+# from_parent to receive EOF, and then calls child with
+# arguments child_args.
+try:
+to_child.close()
+try:
+from_parent.recv()
+except EOFError:
+pass
+else:
+raise AssertionError(Unexpectedly received data from parent
+ process.)
+finally:
+from_parent.close()
+child(*child_args)
+
class TestMailbox(TestBase):
_factory = None # Overridden by subclasses to reuse tests
@@ -59,6 +128,166 @@ class TestMailbox(TestBase):
self._box.close()
self._delete_recursively(self._path)
+def _acquire_lock(self, mbox=None):
+# Keep trying to acquire lock on self._box (or mbox if given)
+# until we get it.
+if mbox is None:
+mbox = self._box
+while True:
+try:
+mbox.lock()
+break
+except mailbox.ExternalClashError:
+time.sleep(0.01)
+
+@contextmanager
+def _locked(self, mbox=None):
+# Context manager to lock and unlock self._box, or mbox if given.
+if mbox is None:
+mbox = self._box
+try:
+self._acquire_lock(mbox)
+
[issue21106] Updated Mac folder icon
Vivek Jain added the comment: I just emailed psf-tradema...@python.org (and CC'd assignee ned.deily) requesting permission to use the logo. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Ned Deily added the comment: Thanks for your contribution. I think the more important issue here is the use of the Apple folder icon. Someone would need to research what restrictions if any exist before we could consider using an icon based on it. The current icons were added back in 2006. I don't know whether they were based on Apple icons and/or to what extent license issues were researched then. Perhaps Jacob or Ronald remembers. If there is a question, we could just eliminate use of the folder icon changeset: 38177:676492a93c8a branch: legacy-trunk user:Ronald Oussoren ronaldousso...@mac.com date:Sun May 14 20:35:41 2006 + files: Mac/OSX/Icons/Disk Image.icns Mac/OSX/Icons/IDLE.icns Mac/OSX/Icons/Python Folder.icns Mac/OSX/Icons/PythonCompiled.icns Mac/OSX/Icons/PythonLauncher.icns Mac/OSX/Icons/PythonSource.icns Mac/ description: A first cut at replacing the icons on MacOS X. This replaces all icons by icons based on the new python.org logo. These are also the first icons that are proper OSX icons. These icons were created by Jacob Rus. -- nosy: +jrus ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19655] Replace the ASDL parser carried with CPython
Eli Bendersky added the comment: There were no serious objections bar the pre-release timing. Now that we're safely in 3.5 territory, can I go ahead and create a patch? Note that for purposes of review, the Github project linked in the original message is more convenient, IMHO -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19655 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15955] gzip, bz2, lzma: add option to limit output size
Nadeem Vawda added the comment: Thanks for the patch, Nikolaus. I'm afraid I haven't had a chance to look over it yet; this past week has been a bit crazy for me. I'll definitely get back to you with a review in the next week, though. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15955 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21106] Updated Mac folder icon
Vivek Jain added the comment: Some searching turned up http://www.apple.com/legal/contact/#copyright. I have contacted Apple through the form and will keep you guys updated. Hopefully they will respond. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21106 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21090] File read silently stops after EIO I/O error
Antoine Pitrou added the comment: Python 2.7 uses C fopen() and fread(), so what happens probably is that fread() silences the error. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21090 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
