Re: Python usage numbers
On 13 fév, 04:09, Terry Reedy tjre...@udel.edu wrote: * The new internal unicode scheme for 3.3 is pretty much a mixture of the 3 storage formats (I am of course, skipping some details) by using the widest one needed for each string. The advantage is avoiding problems with each of the three. The disadvantage is greater internal complexity, but that should be hidden from users. They will not need to care about the internals. They will be able to forget about 'narrow' versus 'wide' builds and the possible requirement to code differently for each. There will only be one scheme that works the same on all platforms. Most apps should require less space and about the same time. -- Python 2 was built for ascii users. Now, Python 3(.3) is *optimized* for the ascii users. And the rest of the crowd? Not so sure, French users (among others) who can not write their texts will iso-8859-1/latin1 will be very happy. No doubts, it will work. Is this however the correct approach? jmf -- http://mail.python.org/mailman/listinfo/python-list
Override the interpreter used by multiprocessing subprocesses?
Hello, I am using a product that has a built-in Python interpreter (ESRI ArcGIS Desktop 10.0 SP3) and have implemented multiprocessing in script that can be run by a tool within the application using the built-in interpreter. The way the built-in interpreter works is incompatible with multiprocessing as it appears to want to start multiple instances of the host application when the subprocesses are created. I am using multiprocessing.Pool with the apply_async function. It works great in a standalone script and I'd rather not rewrite what I've done so far if I can help it, but if there is a way to simply force the standard interpreter to be used for the subprocesses that would be ideal. Thinking about it I realize that this might not be possible due to whatever messaging, pickling, and queueing that the main processes has to handle for the subprocesses, but thought I would ask anyways if only for my own enlightenment. TIA! -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Mon, 13 Feb 2012 13:01:05 -0800 (PST) Rick Johnson rantingrickjohn...@gmail.com wrote: On Feb 13, 12:38 pm, Ian Kelly ian.g.ke...@gmail.com wrote: I hate being suckered in by trolls, but this paragraph demands a response. Ditto... On Mon, Feb 13, 2012 at 9:01 AM, Rick Johnson rantingrickjohn...@gmail.com wrote: You are born with rights. Life, Liberty, and the pursuit of happiness. Healthcare care is NOT a right, healthcare is a privileged. [...] HOWEVER, healthcare is not a concern of the greater society, but only the individual -- with the exception of contagious disease of course, [...snip half-baked, social-Darwinist, there-is-no-such-thing-as-society, naive U.S.-capitalist-libertarian drivel...] Procreation should be a privilege, however sadly for our collective evolution, it's seems to be a right :( There is a word for the philosophy that procreation should be a privilege reserved for those with good genes: eugenics. No, the word is evolution; which means: survival of the fittest. Don't try to hijack real science to bolster a repugnant ideology. Neither Herbert Spencer nor Darwin meant that phrase the way you do. [...snip egregious, self-serving display of ignorance on the subjects of evolution and genetics...] Welcome to fascism, Rick. Don't try to append me onto a specific ideology structure just because that group happens to support ONE of my beliefs. I carry no political [...blah blah...] It's called duck-typing. I somewhat optimistically implore you, Rick, to do some basic research on your chosen subjects. Failing that (almost certainly), here are three simple points which debunk your agenda (and that of the U.S. Republican Right): 1. Publicly-funded healthcare is both cheaper and more effective than privatised systems. It's also the right thing to do (i.e. you don't have to stand by while someone dies because their illness is their fault). Which makes it a win-win-win. 2. The recent economic problems were not triggered by degenerates (are you actually talking about homosexuals here, or just in the more general, McCathyist sense?), but in fact by the operations of the same unregulated markets you are advocating. 3. The central fallacy of social Darwinism is the misapprehension that because natural selection occurs in nature, human society _should_ also work this way. This is a failure to acknowledge the is/ought problem, and is usually compounded (Rick is no exception) by the equally mistaken view that there exist superior individuals whose possession of a quality gene-pool entitles them to survival - an entitlement that is encroached upon by inferior sorts who take up space by insisting on not dying. Can you guess in which group those who hold this view place themselves? In fact, a gene pool is held by a species, not an individual, and the maintenance of its diversity is essential for long term-survival. And to the great disappointment of those looking for a justification of dog-eat-dog, one of the main drivers of evolution is not competition, but adapting to new environments to _avoid_ competition. I'm told the Spanish have a saying which translates as dogs don't eat dogs. Genetics is complicated. Switching one gene on switches others off in unpredictable ways, people choose mates by unfathomable processes, good-looking geniuses have dumb, ugly children and vice-versa. This is why eugenics projects are doomed to failure. They are also morally wrong, which is another win-win. If some featureless fungus, toxic to all other living things, engulfed the globe, would that make it superior? Of course, not, it merely survived. Considerations of what _should_ happen, of superiority and quality, are human, social concerns. We are humans, so they are important to us. But they have nothing to do with genetics or evolution. Social Darwinism is merely a psuedo-scientific attempt to justify inequity and class divides. Furthermore, it is completely dead outside the U.S. - ironically the only developed nation where real Darwinism is still seriously questioned. [...] Go on believing that humans will be inhabiting this rock in the next 1000 years, or this universe in the next 10,000 -- because the enlightened few will have transcended into the mind hive and your @ $$ will be glued to Terra firma forever! Now that is some crazy shit! Maybe L. Ron _is_ still alive... Regards, John -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
(Sorry for top-posting this bit, but I think it's required before the rest of my response) At the risk of wading into this from a UK citizen's perspective: You're imagining a public healthcare system as if it were private. Imagine you go to a doctor and say I've got the flu, can you give me antibiotics. In a Private healthcare system: * The doctor gets paid for retaining a client. * He is incentivised to do what you request. ... so he gives you the antibiotics. In a Public healthcare system: * The doctor is paid no matter what. * His job is to stop the population becoming ill. * By reducing illnesses he reduces his workload, without reducing his wage ... so he'll only give you antibiotics if he feels you are at serious risk, and giving you antibiotics carries less risk for the population than the risk of the population getting immunities. Same goes for surgery etc. On Mon, 2012-02-13 at 08:01 -0800, Rick Johnson wrote: And just how much healthcare dollars are you entitled to exactly? Can you put your entitlement into some form of monetary value? And how can we ever make a system like this fair? If someone works for 30 years and pays a 30% tax rate and another works for 2 years and pays 15%, then how do we delegate the fair share? If your children are educated privately then should you still be paying taxes for education? If you work for/bank with a company that doesn't need to be bailed out, then should you still pay tax for that? If you never need benefits (welfare) then should your taxes be paying for that? you can use that same argument for everything that taxes pay for - the only logical conclusion of that argument is anarchy (i.e. no taxes, and no government). If you are an anarchist then that's a different argument all together (not saying it doesn't have intellectual validity). snip Healthcare is expensive. Do you want a minimum wage doctor curing your ills? And the frivolous lawsuits are not bringing the costs down either. It's so expensive because of the marketing, and because of all the middle-men. A public health system doesn't need to do that marketing. They also don't need to put up with people who aren't seriously ill - I don't know how long your private appointments are, but here in the UK a standard doctor's appointment is 5-10 minutes. If they decide you're actually ill they may extend that. - bosses win, because they have reduced absenteeism, lower training costs to replace workers who die, and fewer epidemics that threaten their own families BS! With free healthcare, those who would have allowed their immune system fight off the flu, now take off from work, visit a local clinic, and get pumped full of antibiotics so they can create a new strain of antibiotic resistant flu virus! Thanks free healthcare! See my comments at the top. -- http://mail.python.org/mailman/listinfo/python-list
Re: how to tell a method is classmethod or static method or instance method
On 14Feb2012 13:13, Zheng Li dllizh...@gmail.com wrote: | On 13Feb2012 15:59, Zheng Li dllizh...@gmail.com wrote: | | how to tell a method is class method or static method or instance method? | | Maybe a better question is: | under what circumstances do you need to figure this out? | | I can get method1 of class Test by | a = getattr(Test, method1) | | and I also want know how to invoke it | a() or a(Test()) Normally: a(T) where T is an object of type/class Test. So your second approach is notionally correct (aside from making a throwaway object that is then discarded). | BTW: | I don't see what the problem is if I ask a question just because I am curious about it. There's nothing wrong with it at all. But often, questions arise from some other circumstances and this one is of such a flavour that if you wanted this code in a real application it would _often_ be the wrong solution to seek, because normally you know how to call something - it is not normally useful to introspect it to decide what to do. So I was wondering what the outer context might be, because there may well have been a better solution to the situation that brought up the specific question. Simple curiosity is sufficient reason, of course. -- Cameron Simpson c...@zip.com.au DoD#743 http://www.cskk.ezoshosting.com/cs/ Too young to rest on the weekend, too old to rest during the week. - Mark Randol ryv...@email.sps.mot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
Rick Johnson rantingrickjohn...@gmail.com wrote: BS! With free healthcare, those who would have allowed their immune system fight off the flu, now take off from work, visit a local clinic, and get pumped full of antibiotics so they can create a new strain of antibiotic resistant flu virus! Thanks free healthcare! Anyone who can write 'antibiotic resistant flu virus' as though they believe it really needs to read some elementary books about disease. Here's a clue: No flu viruses are treatable with antibiotics. In some cases antibiotics may be useful for flu patients to treat secondary bacterial infections, but they are not effective against viruses. -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Tue, Feb 14, 2012 at 6:31 AM, Duncan Booth duncan.booth@invalid.invalid wrote: Here's a clue: No flu viruses are treatable with antibiotics. Oh my god we're too late! Now they're ALL resistant! -- Devin -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Feb 13, 9:01 pm, Rick Johnson rantingrickjohn...@gmail.com wrote: And just how much healthcare dollars are you entitled to exactly? Can you put your entitlement into some form of monetary value? Rick hats off to you man -- you are damn good! Did you study at a top- troll-school? eg. http://www.youtube.com/watch?v=FMEe7JqBgvg -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On Feb 14, 4:38 am, Devin Jeanpierre jeanpierr...@gmail.com wrote: Hey Pythonistas, Consider the regular expression $*. Compilation fails with the exception, sre_constants.error: nothing to repeat. Consider the regular expression (?=$)*. As far as I know it is equivalent. It does not fail to compile. Why the inconsistency? What's going on here? -- Devin $ is a meta character for regular expressions. Use '\$*', which does compile. Regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On Tue, Feb 14, 2012 at 8:20 AM, Vinay Sajip vinay_sa...@yahoo.co.uk wrote: $ is a meta character for regular expressions. Use '\$*', which does compile. I mean for it to be a meta-character. I'm wondering why it's OK for to repeat a zero-width match if it is a zero-width assertion. -- Devin -- http://mail.python.org/mailman/listinfo/python-list
name of a sorting algorithm
Hi, Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i = 1 to N-1: for j = i+1 to N: if a_j a_i then swap(a_j, a_i) It's so simple that it's not mentioned anywhere. I guess it's called selection sort but I'm not sure. The minimum selection sort is an improvement of this one. Thanks, Laszlo -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
2012/2/14 Devin Jeanpierre jeanpierr...@gmail.com: Hey Pythonistas, Consider the regular expression $*. Compilation fails with the exception, sre_constants.error: nothing to repeat. Consider the regular expression (?=$)*. As far as I know it is equivalent. It does not fail to compile. Why the inconsistency? What's going on here? -- Devin -- http://mail.python.org/mailman/listinfo/python-list Hi, I don't know the reason for the observed differences either (I can think of some optimisation issues etc.), but just wanted to mention some other similar patterns to your lookahaed: It seems, that groups (capturing or not capturing) also work ok: re.findall(($)*, abc) ['', '', '', ''] re.findall((?:$)*, abc) ['', '', '', ''] However, is there any realistic usecase for repeated zero-width anchors? regards, vbr -- http://mail.python.org/mailman/listinfo/python-list
Re: Automatic Type Conversion to String
Am 14.02.2012 00:18, schrieb Bruce Eckel: I'm willing to subclass str, but when I tried it before it became a little confusing -- I think mostly because anytime I assigned to self it seemed like it converted the whole object to a str rather than a Path. I suspect I don't know the proper idiom for doing this -- any hints? Thanks ... Could it be that you missed the fact that strings are immutable? That means that you can't change the content of the object once it is initialized. In particular, it means that you e.g. have to override __new__ instead of __init__, because the content is already fixed when the latter is called. Python strings rather behave like Java strings than C++ strings. Uli -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
Jabba Laci wrote: Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i in xrange (N-1): for j in xrange (i, N): if a[j] a[i]: a[i], a[j] = a[j], a[i] It's so simple that it's not mentioned anywhere. I guess it's called selection sort but I'm not sure. The minimum selection sort is an improvement of this one. It's what Wikipedia says a selection sort is: put the least element in [0], the least of the remaining elements in [1], etc. Mel. -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On Tue, Feb 14, 2012 at 10:05 AM, Vlastimil Brom vlastimil.b...@gmail.com wrote: However, is there any realistic usecase for repeated zero-width anchors? Maybe. There is a repeated zero-width anchor is used in the Python re test suite, which is what made me notice this. I assume that came from some actual use-case. (see: http://hg.python.org/cpython/file/096e856a01aa/Lib/test/test_re.py#l599 ) And yeah, even something as crazy as ()* works, but as soon as it becomes (a*)* it doesn't work. Weird. -- Devin -- http://mail.python.org/mailman/listinfo/python-list
RE: name of a sorting algorithm
for i in xrange (N-1): for j in xrange (i, N): if a[j] a[i]: a[i], a[j] = a[j], a[i] It's what Wikipedia says a selection sort is: put the least element in [0], the least of the remaining elements in [1], etc. If your only requirement to match to selection sort is the end result, then every sort would be selection sort. If you meant put the least element in [0] in the first pass then that would indeed be selection sort, but that is not what the above code does. The above code is bubble sort. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
Am 14.02.2012 16:01, schrieb Jabba Laci: Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i = 1 to N-1: for j = i+1 to N: if a_j a_i then swap(a_j, a_i) It's so simple that it's not mentioned anywhere. Please do your own homework. This code isn't even Python! I guess it's called selection sort but I'm not sure. You guessed right. Uli -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
On 14 February 2012 15:31, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Tue, 14 Feb 2012 16:01:05 +0100, Jabba Laci jabba.l...@gmail.com wrote: Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i = 1 to N-1: for j = i+1 to N: if a_j a_i then swap(a_j, a_i) Off hand... The ancient Bubble-Sort... http://en.wikipedia.org/wiki/Bubble_sort Ahem... No, it's not Bubble Sort. Bubble sort only swaps adjacent terms. I don't know what this sort is called, if it even has a name. It's a kind of Selection Sort, as each pass it looks for the minimum of the remaining unsorted items. But it ruffles the unsorted list each pass, seemingly to save using an extra register to store the current minumum (there was a time when registers were at a premium). -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
RE: name of a sorting algorithm
Prasad, Ramit wrote: for i in xrange (N-1): for j in xrange (i, N): if a[j] a[i]: a[i], a[j] = a[j], a[i] It's what Wikipedia says a selection sort is: put the least element in [0], the least of the remaining elements in [1], etc. If your only requirement to match to selection sort is the end result, then every sort would be selection sort. If you meant put the least element in [0] in the first pass then that would indeed be selection sort, but that is not what the above code does. The above code is bubble sort. Well, the classic bubble sort swaps adjacent elements until the extreme one gets all the way to the end. This sort continually swaps with the end element during one pass until the end element holds the extreme. Then it shrinks the range and swaps then next less extreme into the new end element. It does extra swaps because it combines the swap operation with recording the temporary extreme while it searches the subrange. Mel. -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
On Feb 14, 8:22 am, Arnaud Delobelle arno...@gmail.com wrote: On 14 February 2012 15:31, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Tue, 14 Feb 2012 16:01:05 +0100, Jabba Laci jabba.l...@gmail.com wrote: Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i = 1 to N-1: for j = i+1 to N: if a_j a_i then swap(a_j, a_i) Off hand... The ancient Bubble-Sort... http://en.wikipedia.org/wiki/Bubble_sort Ahem... No, it's not Bubble Sort. Bubble sort only swaps adjacent terms. I don't know what this sort is called, if it even has a name. It's a kind of Selection Sort, as each pass it looks for the minimum of the remaining unsorted items. But it ruffles the unsorted list each pass, seemingly to save using an extra register to store the current minumum (there was a time when registers were at a premium). -- Arnaud I disagree. In a bubble sort, one pointer points to the top element, while another descents through all the other elements, swapping the elements at the pointers when necessary. Then the one pointer moved down to the next element and the process repeats. This looks like the bubble sort to me. It was one of the first algorithms I had to program in my first programming class in 1969. Den -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
Den wrote: I disagree. In a bubble sort, one pointer points to the top element, while another descents through all the other elements, swapping the elements at the pointers when necessary. 'When I use a word,' Humpty Dumpty said, in rather a scornful tone, 'it means just what I choose it to mean — neither more nor less.' (_Through the Looking Glass, Lewis Caroll). And you, too, have that ability. Contrariwise see Knuth, _The Art of Computer Programming_ Section 5.2.2, Algorithm B. Mel. -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
On Tue, Feb 14, 2012 at 9:55 AM, Den patents...@gmail.com wrote: On Feb 14, 8:22 am, Arnaud Delobelle arno...@gmail.com wrote: On 14 February 2012 15:31, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Tue, 14 Feb 2012 16:01:05 +0100, Jabba Laci jabba.l...@gmail.com wrote: Could someone please tell me what the following sorting algorithm is called? Let an array contain the elements a_1, a_2, ..., a_N. Then: for i = 1 to N-1: for j = i+1 to N: if a_j a_i then swap(a_j, a_i) Off hand... The ancient Bubble-Sort... http://en.wikipedia.org/wiki/Bubble_sort Ahem... No, it's not Bubble Sort. Bubble sort only swaps adjacent terms. I don't know what this sort is called, if it even has a name. It's a kind of Selection Sort, as each pass it looks for the minimum of the remaining unsorted items. But it ruffles the unsorted list each pass, seemingly to save using an extra register to store the current minumum (there was a time when registers were at a premium). -- Arnaud I disagree. In a bubble sort, one pointer points to the top element, while another descents through all the other elements, swapping the elements at the pointers when necessary. Then the one pointer moved down to the next element and the process repeats. This looks like the bubble sort to me. It was one of the first algorithms I had to program in my first programming class in 1969. Either you're misremembering, or the algorithm you programmed 43 years ago was not actually bubble sort. Quoting from Wikipedia: Bubble sort, also known as sinking sort, is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. The algorithm gets its name from the way smaller elements bubble to the top of the list. In the present algorithm, you'll note that elements in the unsorted part of the list do not bubble up as they would in bubble sort. Rather, they jump around somewhat randomly until they are finally selected for the current sort index. I agree with Arnaud -- this is a selection sort variant that saves a local variable (the index of the minimum element) by placing it at the current sort index instead -- at the cost of doing additional swaps. Probably not a good trade-off in Python (but then again, no pure Python sort algorithm is likely to perform better than the built-in). Cheers, Ian -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On 14/02/2012 15:53, Devin Jeanpierre wrote: On Tue, Feb 14, 2012 at 10:05 AM, Vlastimil Brom vlastimil.b...@gmail.com wrote: However, is there any realistic usecase for repeated zero-width anchors? Maybe. There is a repeated zero-width anchor is used in the Python re test suite, which is what made me notice this. I assume that came from some actual use-case. (see: http://hg.python.org/cpython/file/096e856a01aa/Lib/test/test_re.py#l599 ) And yeah, even something as crazy as ()* works, but as soon as it becomes (a*)* it doesn't work. Weird. I think it's a combination of warning the user about something that's pointless, as in the case of $*, and producing a pattern which could cause the internal regex engine to get stuck in an infinite loop. It is inconsistent in that it warns about $* but not (?=$)* even though they are basically equivalent. -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
Hi, Either you're misremembering, or the algorithm you programmed 43 years ago was not actually bubble sort. Quoting from Wikipedia: Bubble sort, also known as sinking sort, is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. The algorithm gets its name from the way smaller elements bubble to the top of the list. I don't agree with the last sentence. During bubble sort, in the 1st pass the largest element is moved to the top (for me top means the right side (end) of an array). Thus the end of the array is sorted. In the 2nd pass, the largest element of the unsorted left part is moved to the end, etc. That is, it's the _larger_ elements that bubble to the top. At http://en.wikipedia.org/wiki/Bubble_sort you can find an animated gif that shows how the algorithm works. In the present algorithm, you'll note that elements in the unsorted part of the list do not bubble up as they would in bubble sort. Rather, they jump around somewhat randomly until they are finally selected for the current sort index. I agree with Arnaud -- this is a selection sort variant that saves a local variable (the index of the minimum element) by placing it at the current sort index instead -- at the cost of doing additional swaps. Probably not a good trade-off in Python (but then again, no pure Python sort algorithm is likely to perform better than the built-in). The minimum selection sort is an improvement of this noname algorithm. I give it in pseudo-code. Let A be an array with N elements. Indexing starts with 1. for i := 1 to N-1: minindex := i for j := i+1 to N: if A[j] A[minindex] then minindex := j end for if i != minindex then swap(A[i], A[minindex]) end for The two loops are the same as in the naive version. It will also sort the array from the left side. It does much less swaps than the naive version. If the noname algorithm is called selection sort, then its name can be misleading. One may ask OK, but which one? Minimum or maximum selection sort?. Well, neither... Laszlo -- http://mail.python.org/mailman/listinfo/python-list
Re: Komodo 7 release (Python development tools)
On 12-02-08 01:52 PM, Terry Reedy wrote: On 2/8/2012 3:14 PM, Todd Whiteman wrote: My name is Todd. I'm the lead developer for Komodo IDE (Interactive Development Environment) and Komodo Edit (a free, open-source editor) at ActiveState. I wanted to announce that the newest version, Komodo 7, has been released: http://www.activestate.com/komodo-ide/python-editor It would seem that the Professional Python Editor is the same as Komodo Edit, but it is unclear why only Python editing would be featured for Komodo IDE. http://www.activestate.com/komodo-edit is the page with the link people need to download just the editor. The above page covers features from both Edit and IDE - some will only apply to the IDE version. For a full comparison of features you can check out: http://www.activestate.com/komodo-edit/compare-with-komodo-ide Does K.Edit let me run a program with one key, like F5 in IDLE? If so, does it leave me in interactive mode (python -i) as IDLE does? Komodo Edit does not offer a quick run (F5) command by default, you could create your own Python command [1] in the Komodo toolbox and assign it the F5 key binding to serve such a purpose. [1] The short command for running a Python script is: %(python) %F, which uses Komodo's interpolation shortcuts: http://docs.activestate.com/komodo/7.0/shortcuts.html#shortcuts_top Cheers, Todd -- http://mail.python.org/mailman/listinfo/python-list
RE: name of a sorting algorithm
Prasad, Ramit wrote: My apologies, you are correct. It is a selection sort, just an inefficient one. Hmm, I think I should say it is neither since it reminds me of a hybrid of both (bubble/selection). The swapping seems very bubble sort, but the looking for the min / max case seems selection sort-ish. Whatever it is, it is certainly inefficient. :) Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
RE: name of a sorting algorithm
Wilson, Mel wrote: Well, the classic bubble sort swaps adjacent elements until the extreme one gets all the way to the end. This sort continually swaps with the end element during one pass until the end element holds the extreme. Then it shrinks the range and swaps then next less extreme into the new end element. It does extra swaps because it combines the swap operation with recording the temporary extreme while it searches the subrange. My apologies, you are correct. It is a selection sort, just an inefficient one. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -- This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. -- http://mail.python.org/mailman/listinfo/python-list
Re: name of a sorting algorithm
On Tue, Feb 14, 2012 at 11:10 AM, Jabba Laci jabba.l...@gmail.com wrote: Hi, Either you're misremembering, or the algorithm you programmed 43 years ago was not actually bubble sort. Quoting from Wikipedia: Bubble sort, also known as sinking sort, is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. The algorithm gets its name from the way smaller elements bubble to the top of the list. I don't agree with the last sentence. During bubble sort, in the 1st pass the largest element is moved to the top (for me top means the right side (end) of an array). Thus the end of the array is sorted. In the 2nd pass, the largest element of the unsorted left part is moved to the end, etc. That is, it's the _larger_ elements that bubble to the top. At http://en.wikipedia.org/wiki/Bubble_sort you can find an animated gif that shows how the algorithm works. I think that by top they mean front. Each largest element in turn gets moved to the end in a single pass. It is the smaller elements gradually moving toward the front over many passes that I believe is described as bubbling, as can be seen in that gif. If the noname algorithm is called selection sort, then its name can be misleading. One may ask OK, but which one? Minimum or maximum selection sort?. Well, neither... It is a minimum selection sort, because it selects the minimum element on each pass. It just stores the minimum element so far in-place in the array, rather than in a separate variable. -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Feb 14, 2:41 am, John O'Hagan resea...@johnohagan.com wrote: 1. Publicly-funded healthcare is both cheaper and more effective than privatised systems. It's also the right thing to do (i.e. you don't have to stand by while someone dies because their illness is their fault). So you have no problem paying the medical bills of people who overeat sugar, salt, and fat; refuse to put down the ho-ho's; and get a little exercise? If so, then give to charity. Why do you need to FORCE me (and others) to pay for your experiment of degenerate eugenics? 2. The recent economic problems were not triggered by degenerates (are you actually talking about homosexuals here, or just in the more general, McCathyist sense?) WTF does homosexuality have to do with this conversation? I am talking about lazy/slothful, drug/alcohol abusing, junk food eating, self- induced illiterates, techno-phobic Luddite loving lemmings. Look, i don't care how you want to live YOUR life, just leave me and my money the hell out of it! , but in fact by the operations of the same unregulated markets you are advocating. I am well aware of the sins of wall street and the ruling corporate class (Greed.inc). That is half the problem, yes. However, you cannot ignore the fact that we are spending trillions around the globe supporting degenerates. Look at Detroit MI. People like to blame GM for the state of the city but GM is only a very small part of the problem. The REAL problem is sleazy politicians and infections entitlements/welfare. When you crush the tax payers with more and more tyrannical taxation to pay for your entitlement programs, the taxpayers leave town; but the welfare recipients stay! Why the heck would they quit a good thing? However, now you find yourself in a major pickle. With the taxpayers gone, who's going to fund the entitlement programs? NOBODY! The whole house of cards comes crumbling down! Of course i'm probably just wasting my time trying to educate you. You'll just blab on and on about how evil i am for not paying other people's bills so they can watch there hero degenerates on Jersey Shore. 3. The central fallacy of social Darwinism is the misapprehension that because natural selection occurs in nature, human society _should_ also work this way. I NEVER said we should adopt such a society. That is anarchy. And anarchy will NEVER move us forward as a species. This is a failure to acknowledge the is/ought problem, and is usually compounded (Rick is no exception) by the equally mistaken view that there exist superior individuals whose possession of a quality gene-pool entitles them to survival - an entitlement that is encroached upon by inferior sorts who take up space by insisting on not dying. Can you guess in which group those who hold this view place themselves? You'd be surprised which group i reside in. I know my place; but do you know yours? Genetics is complicated. Switching one gene on switches others off in unpredictable ways, people choose mates by unfathomable processes, good-looking geniuses have dumb, ugly children and vice-versa. This is why eugenics projects are doomed to failure. They are also morally wrong, which is another win-win. There is nothing wrong with denying degenerates the right to reproduce. Would you allow a crack head to reproduce? How about someone who carries a virus/illness/deadly defect for which there is no cure and the virus/illness/deadly defect will be passed on to the child? What if you knew without a doubt the baby would be born with two heads, or mentally incapacitated, or brain dead, or etc...? Would you allow the procreation anyway simply because people have a right to be selfish? What if the couple was healthy but had poor parenting skills, or cannot feed the child, or cannot cloth the child, or etc...? Would you allow the procreation anyway simply because people have a right to be selfish? What abut people who go around making babies but refuse to care for them at all? I mean, birth control has been around for some time, but we can't force degenerates to use it! Would you allow the procreation anyway simply because people have a right to be selfish? If some featureless fungus, toxic to all other living things, engulfed the globe, would that make it superior? Of course, not, it merely survived. I love when people contradict themselves in the same sentence -- makes my job much easier! Considerations of what _should_ happen, of superiority and quality, are human, social concerns. We are humans, so they are important to us. But they have nothing to do with genetics or evolution. Really??? I think you need to spend more time ruminating on the subject. You can stick your head in the sand if you like, but technology will advance with or without you. Humans will be cloned. Humans will be genetically engineered. Humans will employ eugenics to sculpt the gene pool. It is our destiny to use our intelligence to drive our own evolution at an
Re: OT: Entitlements [was Re: Python usage numbers]
On Wed, Feb 15, 2012 at 11:21 AM, Rick Johnson rantingrickjohn...@gmail.com wrote: On Feb 14, 2:41 am, John O'Hagan resea...@johnohagan.com wrote: This is a failure to acknowledge the is/ought problem, and is usually compounded (Rick is no exception) by the equally mistaken view that there exist superior individuals whose possession of a quality gene-pool entitles them to survival - an entitlement that is encroached upon by inferior sorts who take up space by insisting on not dying. Can you guess in which group those who hold this view place themselves? You'd be surprised which group i reside in. I know my place; but do you know yours? If you truly believe that only the best should be allowed to survive and that you are not of the best, then the logical thing to do is to immediately destroy yourself. Oddly enough, though, I don't see many eugenics proponents committing mass suicide for the benefit of the gene pool. There is nothing wrong with denying degenerates the right to reproduce. Actually there is; I'm fairly sure that I wouldn't have been born if such policies had been in place, and I strongly suspect that you wouldn't have either. There was a country in the 20th century that adopted a lot of the sorts of policies you're talking about, and it's such a sensitive topic with MANY people that I'm not going to touch it. Suffice it to say that the world does not appreciate such things. If some featureless fungus, toxic to all other living things, engulfed the globe, would that make it superior? Of course, not, it merely survived. I love when people contradict themselves in the same sentence -- makes my job much easier! No, he did not contradict himself - he drew a distinction between superior and survived. You might argue that your definition of superior *is* the ability to survive, but that's a matter for logical argument, not for pointing and laughing. It is our destiny to use our intelligence to drive our own evolution at an ever accelerating rate. To NOT use that power would be to spit in the face of evolution itself! Evolution is driven by the survival of the fittest, not by us using our intelligence to influence it. It's high time I stood up for who I am. I *do* spit in the face of evolution. I do not believe that we came here because we evolved from some lesser life-form, and I do not believe that the world is best served by such philosophies. God created us, roughly 6000-1 years ago, and since then, many things have happened (both good and bad), but never has there been the emergence of any form of next-species human. Look at history (just recent history if you like - the last few hundred years) and find the times when one group of people deemed themselves more evolved than another group. Why were Negros treated as slaves in the US? Why were Australian Aboriginals treated like animals? And the one I hinted at above. If you truly believe that evolution is the way forward, then go find some of the lobbyists for these groups, and say to their faces that you believe that some humans are lesser than others. If you come out of that alive, report back. Preferably with video. It should be interesting. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Feb 13, 10:41 am, Tim Wintle tim.win...@teamrubber.com wrote: Imagine you go to a doctor and say I've got the flu, can you give me antibiotics. In a Private healthcare system: * The doctor gets paid for retaining a client. * He is incentivised to do what you request. ... so he gives you the antibiotics. In a Public healthcare system: * The doctor is paid no matter what. * His job is to stop the population becoming ill. * By reducing illnesses he reduces his workload, without reducing his wage ... so he'll only give you antibiotics if he feels you are at serious risk, and giving you antibiotics carries less risk for the population than the risk of the population getting immunities. Of all the great arguments i have presented you choose the minor antibiotic comment and run with it? But you take NO position on supporting the degenerates of society? Would you mind making your position known? You see, you can have all the healthcare and healthcare dollars in the world. But if your patient keeps eating greasy hamburgers, salty/oily french fries, and blood-sugar spiking soda-pops, he is going to die a nasty death! Sadly however, he will live for many years in a state of poor heath before finally kicking the bucket. All the while draining the system of resources and money. [...] you can use that same argument for everything that taxes pay for - the only logical conclusion of that argument is anarchy (i.e. no taxes, and no government). If you are an anarchist then that's a different argument all together (not saying it doesn't have intellectual validity). I am not an anarchist. Stop trying to label me. Healthcare is expensive. Do you want a minimum wage doctor curing your ills? And the frivolous lawsuits are not bringing the costs down either. It's so expensive because of the marketing, and because of all the middle-men. You're thinking of pharmaceuticals NOT healthcare. And while marketing is a large expense for pharmaceutical companies; RD, lawsuits, and brown-nosing are the main cost of doing buisness. They also don't need to put up with people who aren't seriously ill - I don't know how long your private appointments are, but here in the UK a standard doctor's appointment is 5-10 minutes. If they decide you're actually ill they may extend that. Five to ten minutes? Is the doctor an a-hole or a machine? Can a doctor REALLY diagnose an illness in five to ten minutes? Are you joking? And if not, do you ACTUALLY want the experience to be synonymous with an assembly line? You don't fear misdiagnosis? I envy your bravery! -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Feb 14, 5:31 am, Duncan Booth duncan.bo...@invalid.invalid wrote: Rick Johnson rantingrickjohn...@gmail.com wrote: BS! With free healthcare, those who would have allowed their immune system fight off the flu, now take off from work, visit a local clinic, and get pumped full of antibiotics so they can create a new strain of antibiotic resistant flu virus! Thanks free healthcare! Anyone who can write 'antibiotic resistant flu virus' as though they believe it really needs to read some elementary books about disease. Here's a clue: No flu viruses are treatable with antibiotics. In some cases antibiotics may be useful for flu patients to treat secondary bacterial infections, but they are not effective against viruses. Duncan, your reading and comprehension skills are atrocious. Please re- read the paragraph you quoted, then spend some time comprehending it, then show me where i stated that antibiotics cure viral infections. psst: i NEVER said any such thing! My point is: these quacks are prescribing antibiotics when people don't even need them! Such disregard for immunity is frightening. Penicillin was a gift from the gods, and we have squandered it! Thanks free healthcare! -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Wed, Feb 15, 2012 at 11:48 AM, Rick Johnson rantingrickjohn...@gmail.com wrote: Duncan, your reading and comprehension skills are atrocious. Please re- read the paragraph you quoted, then spend some time comprehending it, then show me where i stated that antibiotics cure viral infections. psst: i NEVER said any such thing! I'm not sure how you'd go about creating a new strain of a virus that's resistant to antibiotics, unless the previous strain was NOT resistant. Viruses are _immune_ to antibiotics, and as we know from Angband, immunity equals resistance times ten. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: Entitlements [was Re: Python usage numbers]
On Feb 14, 6:44 pm, Chris Angelico ros...@gmail.com wrote: If you truly believe that only the best should be allowed to survive and that you are not of the best, then the logical thing to do is to immediately destroy yourself. Oddly enough, though, I don't see many eugenics proponents committing mass suicide for the benefit of the gene pool. I don't need to destroy myself Chris. Likewise i don't need to destroy anyone else. You are trying to cast me as an evil blood thirsty person, and i can assure you, i am not. All i need to do is NOT reproduce and i've done my part. Likewise all WE need to do is keep the rest of us from reproducing. I am not a degenerate, but my genes are flawed. All i can hope to do is make an intellectual contribution to our evolution as a species. Just because you're flawed in one area, does not mean you cannot make contributions in other areas. You can still be part of the whole -- AS LONG AS YOU UNDERSTAND YOUR PLACE! There is nothing wrong with denying degenerates the right to reproduce. Actually there is; I'm fairly sure that I wouldn't have been born if such policies had been in place, and I strongly suspect that you wouldn't have either. So what's the problem with that? There was a country in the 20th century that adopted a lot of the sorts of policies you're talking about, and it's such a sensitive topic with MANY people that I'm not going to touch it. Suffice it to say that the world does not appreciate such things. Of course people don't want to admit that they don't belong, or that they are flawed, or that they are inferior. We are wired with egos so that we don't purposely destroy ourselves; which is vital to our collective evolution, but NOT our individual evolution. However, like all software, the definitions don't always cover the corner cases. Only WE, as intelligent beings, can compensate for the missing code in our own software. Evolution is just a system. A very dumb system. We are the only hope for evolution beyond what this base system can create. We must take the reigns and drive our own evolution. If some featureless fungus, toxic to all other living things, engulfed the globe, would that make it superior? Of course, not, it merely survived. I love when people contradict themselves in the same sentence -- makes my job much easier! No, he did not contradict himself - he drew a distinction between superior and survived. You might argue that your definition of superior *is* the ability to survive, but that's a matter for logical argument, not for pointing and laughing. If a fungus did in fact engulf the earth, THEN it MUST be superior! It is our destiny to use our intelligence to drive our own evolution at an ever accelerating rate. To NOT use that power would be to spit in the face of evolution itself! Evolution is driven by the survival of the fittest, not by us using our intelligence to influence it. But WE are the fittest! Because we are INTELLIGENT! God created us, roughly 6000-1 years ago, and since then, many things have happened (both good and bad), but never has there been the emergence of any form of next-species human. Look at history (just recent history if you like - the last few hundred years) and find the times when one group of people deemed themselves more evolved than another group. Why were Negros treated as slaves in the US? Because they allowed themselves to be subjected. Sad, but true. Why were Australian Aboriginals treated like animals? Because they allowed them selves to be subjected. Sad, but true. And the one I hinted at above. Because the Jews allowed themselves to be subjected. Sad, but true. Slaves only exist because they allow themselves to exist. When people fight back against tyranny, tyranny fails. When people subject themselves to tyranny, tyranny prospers. There have been many instances in history where people did not allow themselves to be subjected; William Wallace comes to mind. Freedmmm! Live free, or die! From my cold dead hand! Over my dead body! Freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed. Those who deny freedom to others deserve it not for themselves. Man is free at the moment he wishes to be. Those who desire to give up freedom in order to gain security, will not have, nor do they deserve, either one. -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On Tue, Feb 14, 2012 at 1:05 PM, MRAB pyt...@mrabarnett.plus.com wrote: And yeah, even something as crazy as ()* works, but as soon as it becomes (a*)* it doesn't work. Weird. I think it's a combination of warning the user about something that's pointless, as in the case of $*, and producing a pattern which could cause the internal regex engine to get stuck in an infinite loop. Considering that ()* works fine, I can't imagine it ever gets stuck in infinite loops. But I admit I am too lazy to check against the interpreter. Also, complete failure is an exceptionally (heh) poor way of warning people about stuff. I hope that's not really it. -- Devin -- http://mail.python.org/mailman/listinfo/python-list
Re: how to tell a method is classmethod or static method or instance method
thank you. I know the second way works. but in my case, i need method1 to be a class method, because I use it to create an object. I have a lot of classes that have __init__ with 2 arguments -- self, and user id. usually, SomeClass(user_id) is used to create an object of SomeClass, but if SomeClass has a class method named method1, method1 will be used to finish the job. and i get it. the context is useful. On 2012/02/14, at 18:52, Cameron Simpson wrote: On 14Feb2012 13:13, Zheng Li dllizh...@gmail.com wrote: | On 13Feb2012 15:59, Zheng Li dllizh...@gmail.com wrote: | | how to tell a method is class method or static method or instance method? | | Maybe a better question is: | under what circumstances do you need to figure this out? | | I can get method1 of class Test by | a = getattr(Test, method1) | | and I also want know how to invoke it | a() or a(Test()) Normally: a(T) where T is an object of type/class Test. So your second approach is notionally correct (aside from making a throwaway object that is then discarded). | BTW: | I don't see what the problem is if I ask a question just because I am curious about it. There's nothing wrong with it at all. But often, questions arise from some other circumstances and this one is of such a flavour that if you wanted this code in a real application it would _often_ be the wrong solution to seek, because normally you know how to call something - it is not normally useful to introspect it to decide what to do. So I was wondering what the outer context might be, because there may well have been a better solution to the situation that brought up the specific question. Simple curiosity is sufficient reason, of course. -- Cameron Simpson c...@zip.com.au DoD#743 http://www.cskk.ezoshosting.com/cs/ Too young to rest on the weekend, too old to rest during the week. - Mark Randol ryv...@email.sps.mot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: re module: Nothing to repeat, but no sre_constants.error: nothing to repeat ?
On 15/02/2012 01:43, Devin Jeanpierre wrote: On Tue, Feb 14, 2012 at 1:05 PM, MRABpyt...@mrabarnett.plus.com wrote: And yeah, even something as crazy as ()* works, but as soon as it becomes (a*)* it doesn't work. Weird. I think it's a combination of warning the user about something that's pointless, as in the case of $*, and producing a pattern which could cause the internal regex engine to get stuck in an infinite loop. Considering that ()* works fine, I can't imagine it ever gets stuck in infinite loops. But I admit I am too lazy to check against the interpreter. Also, complete failure is an exceptionally (heh) poor way of warning people about stuff. I hope that's not really it. There is one place in the re engine where it tries to avoid getting stuck in an infinite loop because of a zero-width match, but the fix inadvertently causes another bug. It's described in issue #1647489. -- http://mail.python.org/mailman/listinfo/python-list
TEST AN EXECUTABLE PYTHON SCRIPT SPEED UNDER A PYTHON SHELL
After my testing of JAVA, PYTHON, VB, C-sharp and Erlang like script languages, I noticed that script languages should be timed after the shell interpreter completed loaded. The start up loading time of script interpreters should be excluded in the measure of executing a byte code script. This also explains why C-executables are fast in manny testing programs of various languages to out beat all interpreter loading languages. But I computed the Euler'of s number for tens of thousands of digitsunder different shells , then I was able to check the speed issues of various computer languages. My question is whether a lot speed testings of computer languages are done in a biased way toward script languages to be slow? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. C++11
sturlamolden sturlamol...@yahoo.no wrote: There are bigsimilarities between Python and the new C++ standard. Now we can actually use our experience as Python programmers to write fantastic C++ :-) This is more true than you might think. For quite a few years now, I've been able to do an almost line-for-line translation of my Python programs to C++ programs. (Microsoft has had a for each extension for a while that made this easier.) -- Tim Roberts, t...@probo.com Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
[issue13706] non-ascii fill characters no longer work in formatting
Stefan Krah stefan-use...@bytereef.org added the comment: I'm using ps_AF for testing: $ ./localeconv_wchar ps_AF size of wchar_t: 32 bits decimal_point byte string: \xd9\xab (2 bytes) decimal_point wide string: L\u066b (1 characters) thousands_sep byte string: \xd9\xac (2 bytes) thousands_sep wide string: L\u066c (1 characters) currency_symbol byte string: \xd8\xa7\xd9\x81\xd8\xba\xd8\xa7\xd9\x86\xdb\x8d (12 bytes) currency_symbol wide string: L\u0627\u0641\u063a\u0627\u0646\u06cd (6 characters) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13706 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14006] Improve the documentation of xml.etree.ElementTree
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14006 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14007] xml.etree.ElementTree - XMLParser and TreeBuilder's doctype() method missing
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14007 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13248] deprecated in 3.2, should be removed in 3.3
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13248 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9856] Change object.__format__(s) where s is non-empty to a TypeError
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9856 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14006] Improve the documentation of xml.etree.ElementTree
Stefan Behnel sco...@users.sourceforge.net added the comment: Both lxml and ElementTree have tutorials: http://effbot.org/zone/element.htm http://lxml.de/tutorial.html Here is another tutorial that may server as a source for an intro: http://infohost.nmt.edu/tcc/help/pubs/pylxml/web/index.html And the general ET documentation is here: http://effbot.org/zone/element-index.htm#documentation In terms of licensing, I can't speak for any of the other sources, but as for the lxml documentation, feel free to copy any ET related parts of it that you see fit. I think the lxml tutorial is gentle enough even for beginners to follow. Note, however, that it uses lxml specific APIs in some places. In the specific case of XPath, the examples should be easily replaced with ElementPath, though. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14006 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14006] Improve the documentation of xml.etree.ElementTree
Stefan Behnel sco...@users.sourceforge.net added the comment: Oh, and here are the ReST sources of the lxml docs: https://github.com/lxml/lxml/tree/master/doc/ Specifically the tutorial: https://raw.github.com/lxml/lxml/master/doc/tutorial.txt and the parsing part: https://raw.github.com/lxml/lxml/master/doc/parsing.txt -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14006 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8739] Update to smtpd.py to RFC 5321
Changes by Geoffrey Spear geoffsp...@gmail.com: -- nosy: +wooble ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8739 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14001] CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request
Jan Lieskovsky ian...@seznam.cz added the comment: The CVE identifier of CVE-2012-0845 has been assigned to this issue: [3] http://www.openwall.com/lists/oss-security/2012/02/13/4 -- title: Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request - CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14001 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14008] Python uses the new source when reporting an old exception
New submission from Yuval Greenfield ubershme...@gmail.com: I ran the following code: import time time.sleep(10) print 1 / 0 And then modified the source before it hit the exception, python prints out the wrong lines from the new source file. e:\Dropbox\dev\python\metricbotc:\python32\python test.py Traceback (most recent call last): File test.py, line 3, in module alkdf;alsdkf;l ZeroDivisionError: division by zero What should have been printed out: e:\Dropbox\dev\python\metricbottest.py Traceback (most recent call last): File E:\Dropbox\dev\python\metricbot\test.py, line 3, in module print 1 / 0 ZeroDivisionError: integer division or modulo by zero Although this is a toy example, I did run in to the problem when working on a long running script that I was upgrading. Tested it and got the same results on python 2.7 and 3.2. -- components: Interpreter Core messages: 153337 nosy: ubershmekel priority: normal severity: normal status: open title: Python uses the new source when reporting an old exception type: behavior versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14008 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14001] CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request
Changes by Senthil Kumaran sent...@uthcode.com: -- nosy: +orsenthil ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14001 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14008] Python uses the new source when reporting an old exception
Changes by Florent Xicluna florent.xicl...@gmail.com: -- resolution: - duplicate status: open - closed superseder: - Unupdated source file in traceback ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14008 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8087] Unupdated source file in traceback
Changes by Yuval Greenfield ubershme...@gmail.com: -- nosy: +ubershmekel ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8087 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14001] CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request
Changes by Antoine Pitrou pit...@free.fr: -- stage: needs patch - patch review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14001 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14009] Clearer documentation for cElementTree
New submission from Éric Araujo mer...@netwok.org: This patch should clarify how to use cElementTree usage, as well as improving indexing. -- assignee: docs@python components: Documentation messages: 153338 nosy: docs@python, eli.bendersky, eric.araujo priority: normal severity: normal stage: commit review status: open title: Clearer documentation for cElementTree versions: Python 2.7, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14009 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14009] Clearer documentation for cElementTree
Changes by Éric Araujo mer...@netwok.org: -- keywords: +patch Added file: http://bugs.python.org/file24519/doc-cET.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14009 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13953] Get rid of doctests in packaging.tests.test_version
Éric Araujo mer...@netwok.org added the comment: Does a doc test test the output literally? Yes, that’s the problem. See doctest documentation for more info about how it works and what problems it has. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13953 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13198] Remove duplicate definition of write_record_file
Éric Araujo mer...@netwok.org added the comment: Damn, bitten by the use of universal newlines! I guess I should split on a literal '\n' instead of calling splitlines. Could you make that change in your clone and tell me if it does the trick? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13198 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14004] Distutils filelist selects too many files on Windows
Éric Araujo mer...@netwok.org added the comment: This code just got changed (#13193) to use '/' instead of os.path.join, as it is documented that paths in MANIFEST.in must use only '/'. Can you build an up-to-date Python 2.7 from Mercurial and check again? Your report comes timely, as there was some doubt about what the correct fix was. Even if your bug is now gone, I’ll want to add a regression test for it. -- assignee: tarek - eric.araujo keywords: +easy stage: - test needed versions: +Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14004 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13491] Fixes for sqlite3 doc
Éric Araujo mer...@netwok.org added the comment: I think you can commit your patch, with our without merging execute_[12].py, as you think best. Then you can do other patches (with or without pre-commit review) to fix or clean up the examples. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13491 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14002] distutils2 fails to install a package from PyPI on Python 2.7.2
Éric Araujo mer...@netwok.org added the comment: The initial errors look like complaints about existing packages I have installed by other means They’re logging messages, not errors. They appear because distutils2 scans sys.path for egg-info and egg files/dirs and reports invalid versions (per PEP 386). Can you report a bug about them? We do want a warning or an error when someone puts an invalid version in their setup.cfg, but when we’re scanning installed distributions it’s useless to warn. The final one looks like a bug in distutils2 I can reproduce it on Debian. A test should not be hard to add, adding the “easy” keyword. -- assignee: tarek - eric.araujo keywords: +easy stage: - test needed versions: +3rd party, Python 3.3 -Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14002 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14010] deeply nested filter segfaults
New submission from Alex Gaynor alex.gay...@gmail.com: http://paste.pocoo.org/show/550884/ will reliably segfault Python3 on all platforms (similar versions for Python2 using itertools work) -- components: Interpreter Core messages: 153344 nosy: alex, benjamin.peterson priority: normal severity: normal status: open title: deeply nested filter segfaults versions: Python 2.6, 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/issue14010 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8087] Unupdated source file in traceback
Jim Jewett jimjjew...@gmail.com added the comment: Martin v. Löwis (loewis) wrote: Displaying a warning whenever the code has changed on disk is clearly unacceptable As clarified, the request is only for when a traceback is being created (or perhaps even only for when one is being printed). I agree that we don't want to watch every file every time any code is run, but by the time a traceback is being displayed, any tight loops are ending. Nick Coghlan (ncoghlan) wrote: There are a few different cases: ... 2. Source has been changed, but module has not been reloaded ... 3. Source has been changed, module has been reloaded, but object ... Given that a traceback is being displayed, I think it is reasonable to rerun the find-module portion of import, and verify that there is not stale byte-code. Frankly, I think it would be worth storing a file timestamp on modules, and verifying that whatever-would-be-imported-if-imported-now matches that timestamp. This would also catch case (3). I also think that -- on traceback display -- it might be worth verifying that the code's __globals__ is the __globals__ associated with the module of that name in sys.modules. This would warn about some intentional manipulations, but would catch case (3) even more accurately. -- nosy: +Jim.Jewett ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8087 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14011] packaging should use shutil archiving functions transparently
New submission from Éric Araujo mer...@netwok.org: The packaging commands sdist and bdist can create various kinds of archives. The function used to create them is thankfully just a thin wrapper around shutil.make_archive (extracted from distutils), and sdist also uses shutil.get_archive_formats to validate its --formats option. bdist however maintains its own registry. The docstrings, help texts and reST documentation also contain out-of-sync duplicate lists of allowed formats. I’m working on a patch to fix this duplication. -- assignee: eric.araujo components: Distutils2 messages: 153346 nosy: alexis, eric.araujo priority: normal severity: normal status: open title: packaging should use shutil archiving functions transparently type: enhancement versions: 3rd party, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14011 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14005] IDLE Crash when running/saving a file
Roger Serwy roger.se...@gmail.com added the comment: Try running IDLE from a command prompt and report the error message you see. Start a python shell session and run: import idlelib.idle -- nosy: +serwy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14005 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14012] Misc tarfile fixes
New submission from Éric Araujo mer...@netwok.org:
I found a few possible bugs in tarfile:
- “mode in 'raw'” can give false positives for '' or 'ra'. Most of the code
also checks for “len(mode) 1”, but I find clearer and safer to just use “mode
in ('r', 'a', 'w')”.
- To use the shadowed builtin “open”, tarfile uses both “import as” and a local
alias “bltin_open = open”. However, the second idiom would break if tarfile
were reloaded.
- Error messages don’t say what the invalid mode was. (Error messages are not
part of the language, but nonetheless maybe it’s best not to commit that to
stable branches.)
--
components: Library (Lib)
files: tarfile-misc-bugs-3.2.diff
keywords: patch
messages: 153348
nosy: eric.araujo, lars.gustaebel
priority: normal
severity: normal
stage: commit review
status: open
title: Misc tarfile fixes
type: behavior
versions: Python 2.7, Python 3.2, Python 3.3
Added file: http://bugs.python.org/file24520/tarfile-misc-bugs-3.2.diff
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue14012
___
___
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14011] packaging should use shutil archiving functions transparently
Changes by Ramchandra Apte maniandra...@gmail.com: -- components: +Documentation ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14011 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6715] xz compressor support
Éric Araujo mer...@netwok.org added the comment: BTW, any plans on a PyPI backport for fun and profit? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6715 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14010] deeply nested filter segfaults
Changes by Ezio Melotti ezio.melo...@gmail.com: -- nosy: +ezio.melotti stage: - needs patch type: - crash ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14010 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14013] tarfile should expose supported formats
New submission from Éric Araujo mer...@netwok.org: shutil contains high-level functions to create a zipfile or a tarball. When a new format is added to the tarfile module, then shutil needs to be updated manually. If tarfile exposed the names of the compressors it supports, then shutil could just automatically support everything that tarfile supports instead of having to re-do import dances for optional modules (bz2, lzma, zlib) and also duplicate formats in its doc. This may also be useful for other code wanting to do some introspection. Attached patch implements tarfile.formats, a list of strings (I thought about using a frozenset but then followed the precedent set by the 3.3 crypt module). Tests and docs not updated, I wanted to get Lars’ approval on the principle first. One could argue that this is not needed: compression modules are not added often; updating shutil after updating tarfile is not hard; it is not that useful to have access to the list of supported formats. -- assignee: docs@python components: Documentation, Library (Lib) messages: 153350 nosy: docs@python, eric.araujo, lars.gustaebel, nadeem.vawda priority: normal severity: normal stage: patch review status: open title: tarfile should expose supported formats type: enhancement versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14013 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14013] tarfile should expose supported formats
Changes by Éric Araujo mer...@netwok.org: -- keywords: +patch Added file: http://bugs.python.org/file24521/add-tarfile.formats.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14013 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5411] add xz compression support to shutil
Éric Araujo mer...@netwok.org added the comment: a) is #14013; b) is #14011. If Lars agrees to #14013, I will withdraw this patch in favor of another one that would make shutil automatically support all compressors that tarfile supports (my b) point). Note that this is not going to be pain-free, as for example bzip2 compression is obtained with the strings “bz2”, “bzip2”, “bzip” or “bztar” depending on the modules; I think it’s worth it nonetheless, even if I have to add an ugly conversion in shutil for compat. -- dependencies: +tarfile should expose supported formats ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5411 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6715] xz compressor support
Nadeem Vawda nadeem.va...@gmail.com added the comment: BTW, any plans on a PyPI backport for fun and profit? At present, no. I'll look into it later in the year, but at the moment I don't have the time to work on it - I suspect the parts written in C will require substantial changes to work under 2.x. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6715 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14010] deeply nested filter segfaults
Armin Rigo ar...@users.sourceforge.net added the comment: The issue is a stack exhaustion. Examples can be trivially made for any iterator that takes another iterator as argument: itertools.takewhile(), zip() in Python3, etc. etc. It's just one of many places where CPython does a recursion without checking the recursion depth. CPython still works, based on the resonable assumption that doing such a recursion here is obscure. Someone seriously bored could start with some C-based callgraph builder; or alternatively use PyPy, which finds such recursions automatically in its own source, and compare all places where a recursion check is inserted with the corresponding place in CPython. There are a large number of them (761, not counting the JIT), so be patient :-( -- nosy: +arigo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14010 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14014] codecs.StreamWriter.reset contract not fulfilled
New submission from Jim Jewett jimjjew...@gmail.com: def reset(self): Flushes and resets the codec buffers used for keeping state. Calling this method should ensure that the data on the output is put into a clean state, that allows appending of new fresh data without having to rescan the whole stream to recover state. pass This does not ensure that the stream is flushed, as the docstring promises. I believe the following would work better. def reset(self): Flushes and resets the codec buffers used for keeping state. Calling this method should ensure that the data on the output is put into a clean state, that allows appending of new fresh data without having to rescan the whole stream to recover state. if hasattr(self.stream, flush): self.stream.flush() -- components: Unicode messages: 153354 nosy: Jim.Jewett, ezio.melotti priority: normal severity: normal status: open title: codecs.StreamWriter.reset contract not fulfilled type: behavior versions: Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14014 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13992] Segfault in PyTrash_destroy_chain
Charles-François Natali neolo...@free.fr added the comment: I'm running out of ideas to debug this, maybe Antoine or Amaury can help :-) One last idea (not sure it will work though): If Channel's finalizer gets called twice, inside Channel.__del__, you could save a string representation of the current backtrace as an attribute, and print the previous and current backtrace is there is already one such attribute (i.e. print the backtrace if __del__ is called twice). There may be false positives (for example a finalizer resurecting the object would end up in __del__ being called twice), but it might yield useful info. You might also want to save the thread ID and time. But this is really strange... -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13992 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14001] CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request
Charles-François Natali neolo...@free.fr added the comment: With test. test_xmlrpc has a timeout detection code which is simply broken (and it's actually documented): I just removed it, so if the server loops, the test will block. I think it's acceptable since other tests behave in the same way, and those days we have faulthandler that can be used to pinpoint such deadlocks/loops easily. Also, I've noticed that people are more inclined to fix tests that block than mere failing tests :-) -- Added file: http://bugs.python.org/file24522/xmlrpc_loop-1.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14001 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13878] test_sched failures on Windows buildbot
Charles-François Natali neolo...@free.fr added the comment: Well, it's not really needed, as long as scheduler deals correctly with expired deadlines. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13878 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13881] Stream encoder for zlib_codec doesn't use the incremental encoder
Andrew McNabb amcn...@mcnabbs.org added the comment: It looks like encodings/zlib_codec.py defines a custom IncrementalEncoder and IncrementalDecoder, but its StreamWriter and StreamReader rely on the standard implementation of codecs.StreamWriter and codecs.StreamReader. One solution might be to have zlib_codec.StreamWriter inherit from zlib_codec.IncrementalEncoder instead of from zlib_encoder.Codec. I'm not familiar enough with the codecs library to know whether this is the best approach. Unfortunately, there are 120 codec files in the encodings directory, and it's unclear how many of them would need to be modified. Based on the number of them that implement StreamWriter as class StreamWriter(Codec,codecs.StreamWriter), it looks like it might be a lot of them. Was each of these 120 files hand-written? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13881 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13881] Stream encoder for zlib_codec doesn't use the incremental encoder
Changes by R. David Murray rdmur...@bitdance.com: -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13881 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14015] surrogateescape largely missing from documentation
New submission from Jim Jewett jimjjew...@gmail.com: Recent discussion on the mailing lists and in http://bugs.python.org/issue13997 make it clear that the best way to get python2 results for ASCII-in-the-parts-I-might-process-or-change is to replace f = open(fname) with f = open(fname, encoding=ascii, errors=surrogateescape) Unfortunately, surrogateescape (let alone this recipe) is not easily discoverable. http://docs.python.org/dev/library/functions.html#open lists 5 error-handlers -- but not this one. It says that other error handlers are possible if they are registered with http://docs.python.org/dev/library/codecs.html#codecs.register_error but I haven't found a way to determine which error handlers are already registered. The codecs.register (as opposed to register_error) documentation does list it as a possible value, but that is the only reference. The other 5 error handlers are also available as module-level functions within the codecs module, and have their own documenation sections within http://docs.python.org/dev/library/codecs.html Neither help(open) nor import codecs; help(codecs) provides any hints of the existence of surrogateescape. Both explicitly suggest that it does not exist, by enumerating other values. -- assignee: docs@python components: Documentation, Unicode messages: 153359 nosy: Jim.Jewett, docs@python, ezio.melotti priority: normal severity: normal status: open title: surrogateescape largely missing from documentation versions: Python 3.1, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14015 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13997] Clearly explain the bare minimum Python 3 users should know about Unicode
Jim Jewett jimjjew...@gmail.com added the comment: See bugs/python.org/issue14015 for one reason that surrogateescape isn't better known. -- nosy: +Jim.Jewett ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13997 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14016] Usage of socket.sendall() in multiple threads
New submission from Srikantha Kadur srikanthka...@gmail.com: Here is my code. Func1(): . . CliSock, addr = ServSocket.accept() print 'DataPortServ:Connected by', addr data.DataSendSock = CliSock for cnt in range(data.ThreadCnt): SessionId = startSessionId + SessionIdCnt* cnt thread.start_new_thread(ThreadHandleDataPort,((Thead+str(cnt)),data,EventCnt[cnt],EventCnt[cnt+1],UECntPerThread,ip,SessionId)) time.sleep(0.005) ThreadHandleDataPort(args): #here i use socket.sendall while True: if ( 3 != data.bRunFlag): if (len(data.AddedEvents) != 0) | (len(data.AddedReasons) != 0): #time.sleep(5) for EventCnt in range(StartEvent,StopEvent): . . . data.DataSendSock.sendall(SendEvent) . . My application is a server and it accepts connection from the client on a port and start sending some messages to the client. While sending messages i use multiple threads for the same socket based on required traffic. I do not modify any global variables but i read only global variables.But at high Loads my messages are being corrupted, here is the snippet of the corruption actual message should have been ABS1,1328577019.57,181138955, instead im getting ABS1,1329218634.91,181ABS1 so here is my Q: Do i need to lock the socket before sending inside the threads or Python modules will take care of it? Please suggest. -- components: 2to3 (2.x to 3.x conversion tool) messages: 153361 nosy: srikadur priority: normal severity: normal status: open title: Usage of socket.sendall() in multiple threads type: behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14016 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14016] Usage of socket.sendall() in multiple threads
R. David Murray rdmur...@bitdance.com added the comment: This isn't really the place to get help on using python, but no, python doesn't do any implicit locking for you. -- nosy: +r.david.murray resolution: - invalid status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14016 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13198] Remove duplicate definition of write_record_file
Paul Moore p.f.mo...@gmail.com added the comment: Damn, bitten by the use of universal newlines! I guess I should split on a literal '\n' instead of calling splitlines. Could you make that change in your clone and tell me if it does the trick? Not for a few days, but I'll check when I'm back home -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13198 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14016] Usage of socket.sendall() in multiple threads
Srikantha Kadur srikanthka...@gmail.com added the comment: Thanks David, as the last available option i used this tool. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14016 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14002] distutils2 fails to install a package from PyPI on Python 2.7.2
Paul Moore p.f.mo...@gmail.com added the comment: On 14 February 2012 15:48, Éric Araujo rep...@bugs.python.org wrote: Éric Araujo mer...@netwok.org added the comment: The initial errors look like complaints about existing packages I have installed by other means They’re logging messages, not errors. They appear because distutils2 scans sys.path for egg-info and egg files/dirs and reports invalid versions (per PEP 386). Can you report a bug about them? We do want a warning or an error when someone puts an invalid version in their setup.cfg, but when we’re scanning installed distributions it’s useless to warn. To what? The individual packages? Maybe, but I'm not sure how useful that would be. For example, pywin32 has been using 3-digit versions like this forever, and I don't see them changing just on the basis of this (but I may be wrong). PyPI seems to handle pywin32's version fine... I'd rather say that it's a bug in distutils2 that it complains about perfectly valid distributions. I'd be OK with a verify flag/action that checked existing installed distributions, but I see no reason for any message (informational, warning, or whatever) when you're just asking for a new distribution to be installed. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14002 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13878] test_sched failures on Windows buildbot
Nadeem Vawda nadeem.va...@gmail.com added the comment: Ah, I suppose that makes sense. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13878 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1326113] Letting build_ext --libraries take more than one lib
Eric Snow ericsnowcurren...@gmail.com added the comment: Ran into this bug today in 2.7 (building python-sybase with freetds). The fix in msg121260 took care of it (didn't try the patch). Thanks, Éric. Is this something that could get patched in the upcoming micro releases? It's not so important for me at this point, and I'm not sure how often it will come up, but it's also a very simple fix. -- nosy: +eric.snow ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1326113 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9127] subprocess.Popen.communicate() and SIGCHLD handlers
Gregory P. Smith g...@krypto.org added the comment: fixed via http://hg.python.org/cpython/rev/767420808a62 -- dependencies: +race condition in subprocess module nosy: +gregory.p.smith ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9127 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Jim Jewett jimjjew...@gmail.com added the comment: On Mon, Feb 13, 2012 at 3:37 PM, Dave Malcolm dmalc...@redhat.com added the comment: * added comments about the specialcasing of length 0: /* We make the hash of the empty string be 0, rather than using (prefix ^ suffix), since this slightly obfuscates the hash secret */ Frankly, other short strings may give away even more, because you can put several into the same dict. I would prefer that the randomization not kick in until strings are at least 8 characters, but I think excluding length 1 is a pretty obvious win. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10287] NNTP authentication should check capabilities
Antoine Pitrou pit...@free.fr added the comment: I think the patch is fine. Will apply soon (thanks!) . -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10287 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14004] Distutils filelist selects too many files on Windows
Nadeem Vawda nadeem.va...@gmail.com added the comment: I've been able to reproduce this on current builds of 2.7, 3.2 and 3.3. The problem seems to be that distutils.filelist pathnames using the OS directory separator, but the regexps used for matching paths are written to always assume /-based paths. I've been able to get the correct behaviour in this case by making the module build paths using / regardless of the OS directory separator: --- a/Lib/distutils/filelist.py +++ b/Lib/distutils/filelist.py @@ -55,10 +55,10 @@ def sort(self): # Not a strict lexical sort! -sortable_files = sorted(map(os.path.split, self.files)) +sortable_files = sorted(f.split(/) for f in self.files) self.files = [] for sort_tuple in sortable_files: -self.files.append(os.path.join(*sort_tuple)) +self.files.append(/.join(sort_tuple)) # -- Other miscellaneous utility methods --- @@ -258,7 +258,7 @@ for name in names: if dir != os.curdir:# avoid the dreaded ./ syndrome -fullname = os.path.join(dir, name) +fullname = dir + / + name else: fullname = name I'm not entirely comfortable with this fix, though - it seems like it would be better to produce paths using the OS directory separator at the end of the process. Maybe it's possible to add a translation step after the file list is built and de-duplicated? I don't know much about how the rest of distutils uses this module. (Random aside: do we support any platforms that don't support / as a directory separator (even if it isn't the preferred one)? Hmm...) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14004 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6784] byte/unicode pickle incompatibilities between python2 and python3
Changes by Merlijn van Deen valhall...@gmail.com: -- nosy: +valhallasw ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6784 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13881] Stream encoder for zlib_codec doesn't use the incremental encoder
STINNER Victor victor.stin...@gmail.com added the comment: See also issue #7475. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13881 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10287] NNTP authentication should check capabilities
Antoine Pitrou pit...@free.fr added the comment: This issue can now be closed for good. -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10287 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10287] NNTP authentication should check capabilities
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset a7f1ffd741d6 by Antoine Pitrou in branch '3.2': Issue #10287: nntplib now queries the server's CAPABILITIES first before sending MODE READER, and only sends it if not already in READER mode. http://hg.python.org/cpython/rev/a7f1ffd741d6 New changeset 03019bb62d83 by Antoine Pitrou in branch 'default': Issue #10287: nntplib now queries the server's CAPABILITIES first before sending MODE READER, and only sends it if not already in READER mode. http://hg.python.org/cpython/rev/03019bb62d83 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10287 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14001] CVE-2012-0845 Python v2.7.2 / v3.2.2 (SimpleXMLRPCServer): DoS (excessive CPU usage) by processing malformed XMLRPC / HTTP POST request
Antoine Pitrou pit...@free.fr added the comment: The patch looks ok to me. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14001 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14015] surrogateescape largely missing from documentation
Changes by Chris Rebert pyb...@rebertia.com: -- nosy: +cvrebert ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14015 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14017] io.TextIOWrapper should expose a documented write_through attribute
New submission from Nick Coghlan ncogh...@gmail.com: io.TextIOWrapper acquired a new write_through argument for 3.3, but that is not exposed as a documented attribute. This is needed so that a text wrapper can be replaced with an equivalent that only alters selected settings (such as the Unicode error handler). -- components: Library (Lib) messages: 153376 nosy: ncoghlan priority: normal severity: normal status: open title: io.TextIOWrapper should expose a documented write_through attribute versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14017 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14017] Make it easy to create a new TextIOWrapper based on an existing
Nick Coghlan ncogh...@gmail.com added the comment: Updating issue title, since I realised this doesn't work in 3.2 either (the newline argument also isn't available for introspection - newlines is not the same thing) Possible API signature: _missing = object() def rewrap(self, encoding=_missing, errors=_missing, newline=_missing, line_buffering=_missing, write_through=_missing): pass That is, accept the same arguments as __init__ (excluding the buffer argument), with any arguments not explicitly supplied replaced with the values from the current instance. -- title: io.TextIOWrapper should expose a documented write_through attribute - Make it easy to create a new TextIOWrapper based on an existing ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14017 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
