Re: Using asyncio workers in a `concurrent.futures` interface
On Tue, Aug 12, 2014 at 11:03 PM, Marko Rauhamaa ma...@pacujo.net wrote: Ian Kelly ian.g.ke...@gmail.com: On Tue, Aug 12, 2014 at 11:02 AM, cool-RR ram.rac...@gmail.com wrote: And that's it, no coroutines, no `yield from`. Since, if I understand correctly, asyncio requires a mainloop, it would make sense for the AsyncIOExecutor to have a thread of its own in which it could run its mainloop. I think that putting the event loop in a separate thread would be necessary if the intention is that the executor be invoked from outside. I'm not aware of this work having been done, but it sounds perfectly feasible. Multithreading will require normal locking to protect critical sections. Care must be taken to never yield while holding a threading lock. You can use event_loop.call_soon_threadsafe() to schedule tasks and callbacks on the event loop, and Queue objects to pass futures back to the caller. Apart from whatever synchronization those use internally, I don't think any locking would be needed. However, it would of course require that the functions passed in to the executor be coroutines in actuality. You just can't pass a blocking function into an asynchronous framework and expect it to magically not block. -- https://mail.python.org/mailman/listinfo/python-list
[Announce] Python-Future v0.13; cheatsheet for Python 2/3 compatible code
Hi all, I am happy to announce an update to Python-Future for Python 2/3 compatibility and a new cheat-sheet for writing code compatible with both versions. Here’s the What’s New page for v0.13: http://python-future.org/whatsnew.html Here’s the Py2/3 compatibility cheat-sheet: http://python-future.org/compatible_idioms.html or as a PDF: http://python-future.org/compatible_idioms.pdf The cheat-sheet accompanies a talk I gave at PyCon AU 2014 last weekend called “Writing Python 2/3 compatible code”. I will add a link to the video and slides from the cheat-sheet page when they are online. I would be happy to accept pull requests for additions or changes to the Py2/3 cheat-sheet. The source is here: https://github.com/PythonCharmers/python-future/blob/master/docs/notebooks/Writing%20Python%202-3%20compatible%20code.ipynb Best wishes, Ed -- Dr. Edward Schofield Python Charmers http://pythoncharmers.com -- https://mail.python.org/mailman/listinfo/python-list
newbee
I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? Thanks Frank -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Object Systems
Years ago I wrote strait: https://pypi.python.org/pypi/strait I wonder who is using it and for what purpose, since surprisingly enough it has 50+ downloads per day. For me it was more of an experiment than a real project. -- https://mail.python.org/mailman/listinfo/python-list
Re: [Announce] Python-Future v0.13; cheatsheet for Python 2/3 compatible code
On Wed, 13 Aug 2014 13:28:03 +1000, Ed Schofield wrote: Hi all, I am happy to announce an update to Python-Future for Python 2/3 compatibility and a new cheat-sheet for writing code compatible with both versions. Nice! But are you aware that some of your Python 2 code only works in certain versions of Python 2? E.g. raising bare strings only works up to Python 2.5, in 2.6 and higher it is a syntax error. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On Tue, Aug 12, 2014 at 7:57 PM, Frank Scafidi fpscaf...@gmail.com wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? I've not worked with Rasberry Pi, but it has some kind of linux on it. So find a text editor (maybe vim is on it). Write your code with text editor and save. To run it type: python my_program.py See python.org website and read the tutorial Thanks Frank -- https://mail.python.org/mailman/listinfo/python-list -- Joel Goldstick http://joelgoldstick.com -- https://mail.python.org/mailman/listinfo/python-list
odd difference calling function from class or instance variable
Hello, This is my first post here so please gently inform me of any etiquette breaches. I'm seeing a behaviour I can't explain with Python 3.4.1 when I call a function via a reference stored in an object. When I assign the reference as a class variable, the reference has __self__ set, too, so I get an extra argument passed to the function. If I assign the reference as an instance variable, then __self__ is unset so no extra argument. Here's what I mean: def print_args(*args): print(args) class C: ref = None C.ref = print_args# assign to class variable i = C() i.ref() # call via class variable - get a 'self' argument passed (__main__.C object at 0x1071a05f8,) i.ref = print_args # assign to instance variable i.ref() # call via instance variable: no arguments () If you look at i.ref.__self__ for the two cases, you'll see what's going on. I've tried RTFMing but can't find the reason for the two behaviours. Could someone provide an explanation for me, please? Thanks, Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On Wed, Aug 13, 2014 at 9:57 AM, Frank Scafidi fpscaf...@gmail.com wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? These sound like RPi questions, rather than Python questions. You may find knowledgeable people here on this list, but if not, I would advise hunting down an RPi mailing list or newsgroup and asking there. Most of us here use full computers, where questions like how do I save a file? are trivially easy... you may find, actually, that starting on a PC and then pushing the file to the RPi is the easiest way to work. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: odd difference calling function from class or instance variable
GregS wrote: Hello, This is my first post here so please gently inform me of any etiquette breaches. I'm seeing a behaviour I can't explain with Python 3.4.1 when I call a function via a reference stored in an object. When I assign the reference as a class variable, the reference has __self__ set, too, so I get an extra argument passed to the function. If I assign the reference as an instance variable, then __self__ is unset so no extra argument. Here's what I mean: def print_args(*args): print(args) class C: ref = None C.ref = print_args# assign to class variable i = C() i.ref() # call via class variable - get a 'self' argument passed (__main__.C object at 0x1071a05f8,) i.ref = print_args # assign to instance variable i.ref() # call via instance variable: no arguments () If you look at i.ref.__self__ for the two cases, you'll see what's going on. I've tried RTFMing but can't find the reason for the two behaviours. Could someone provide an explanation for me, please? When an attribute is found in the instance it is left as-is, so i.ref() is the same as print_ref() When the attribute is found in the class and itself has a __get__ attribute i.ref() is equivalent to print_ref.__get__(i, C)() which creates a bound method object (i. e. it is assumed that the function implements a method): class C: pass ... def f(self): pass ... f.__get__(C(), C) bound method C.f of __main__.C object at 0x7f3a99ce86a0 As you have seen a bound method implicitly passes the instance as the first arg to the function. The underlying mechanism is called descriptor protocol and is also used to implement properties. If you need to store a function in the class you can wrap it as a staticmethod: def print_args(*args): print(args) ... class C: ... ref = staticmethod(print_args) ... C().ref() () -- https://mail.python.org/mailman/listinfo/python-list
Re: odd difference calling function from class or instance variable
On Wed, Aug 13, 2014 at 7:06 PM, GregS n...@my.real.address.com wrote: If you look at i.ref.__self__ for the two cases, you'll see what's going on. I've tried RTFMing but can't find the reason for the two behaviours. Could someone provide an explanation for me, please? What you're seeing there is the magic of instance methods. I'll simplify it some by defining the method right there in the class, rather than doing the weird injection that you were doing: class C: def meth(self): print(Hi! I'm a method.,self) C().meth() Hi! I'm a method. __main__.C object at 0x012BC6D0 C.meth function C.meth at 0x012AF300 C().meth bound method C.meth of __main__.C object at 0x012AEDF0 _() Hi! I'm a method. __main__.C object at 0x012AEDF0 When you look up something on the instance, if there's a regular function of that name on its class, you'll get back a piece of magic called a bound method. It's a curried function, if you know what that means (if you don't, just skip this sentence). When you then call that bound method, it ultimately goes back to the original function, with a pre-filled first argument (which comes from __self__). Basically, what this means is that a bound method can be treated like a function, and it automatically keeps track of its proper state; the unbound method *is* a function, so if you call that directly, you'll need to pass it an object as self. C.meth(C()) Hi! I'm a method. __main__.C object at 0x0169AA70 As a general rule, though, you won't be doing this kind of thing. Define functions inside a class body, and then call them on instances. Everything'll happily work, and all these little details are magic :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Arbitrary dunder attributes (was Re: odd difference calling function from class or instance variable)
On Wed, Aug 13, 2014 at 7:06 PM, GregS n...@my.real.address.com wrote: When I assign the reference as a class variable, the reference has __self__ set, too, so I get an extra argument passed to the function. If I assign the reference as an instance variable, then __self__ is unset so no extra argument. Spin-off from Greg's thread. The bound method object stores a reference to the original object (the thing that becomes the first argument to the target function) in __self__ (and the function in __func__). ISTM this ought to be _self (and _func), as it's intended to be private; is it really something that has language-level significance on par with __lt__ and so on? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
Frank Scafidi wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? You can use any text editor to write a python script. A simple editor which might be present ont the Pi is called nano. It shows the hotkeys to store the text and quit the editor, and thus should be self-explanatory: $ nano helloworld.py Once you have written your simple script you can look at it with the cat command: $ cat helloworld.py #!/usr/bin/env python print Hello world Invoke it with: $ python helloworld.py Hello world You can also make your script executable which means that the first line controls which program is used to run it: $ chmod +x helloworld.py $ ./helloworld.py Hello world $ If the script is in a directory listed in the PATH environment variable you can omit the path (the ./ in the above example): $ mv helloworld.py ~/bin $ helloworld.py Hello world PS: I ran the above demo on a Linux system, but not on the Raspberry Pi, so if something doesn't work as shown above it's probably due to the difference between the two systems. -- https://mail.python.org/mailman/listinfo/python-list
logging question
Hello, I posted a question about logger module to create a log file every day. I had a problem recently in logging. My pc restarts regularly. Whenever it restarts I lose all the log since it writes in the file once per day. Is there a way to log information in a file as soon as it available. My application is a tcp server. Before I did it without using logger module, I developed customized log module for the application. As soon as there is a connection I append it in the log file. By that way I didn't lose any log information. -- nambi -- https://mail.python.org/mailman/listinfo/python-list
Re: odd difference calling function from class or instance variable
Thanks to both of you for your incredibly prompt replies. My homework for tonight is to digest the descriptor protocol... Peter, thanks for suggesting using staticmethod() to get the behaviour I was expecting. I've only used staticmethod as a decorator before now. Chris, I agree that it's not every day you assign functions to class attributes, but it does have its uses (I won't bore you with mine). Now that I know how it treads on the toes of Python's method magic, I can decide whether it's the best approach or not. Thanks again, Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: odd difference calling function from class or instance variable
On Wed, Aug 13, 2014 at 8:20 PM, GregS n...@my.real.address.com wrote: Thanks to both of you for your incredibly prompt replies. My homework for tonight is to digest the descriptor protocol... Peter, thanks for suggesting using staticmethod() to get the behaviour I was expecting. I've only used staticmethod as a decorator before now. Chris, I agree that it's not every day you assign functions to class attributes, but it does have its uses (I won't bore you with mine). Now that I know how it treads on the toes of Python's method magic, I can decide whether it's the best approach or not. You seem to know what you're doing, which is a good start :) I aimed my explanation a bit lower than your actual knowledge turns out to be, so go ahead and do what you know you need to do. You're not treading on Python's toes, here, but you're basically recreating some of what Python normally does under the covers, so you'll need to actually understand (instead of just treating as black-box magic) stuff like the descriptor protocol. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Python and IDEs [was Re: Python 3 is killing Python]
By the way, you keep replying to people, and quoting them, but deleting their name. Please leave the attribution in place, so we know who you are replying to. That's what the References:-Header is there for. The References header is for the benefit of news and mail clients, not human readers. Any half-decent news client will happily display a thread tree for you. Based on that References:-Header. It is rude to deliberately refuse to give attributes: So please stop being rude, and follow the convention of both email and usenet (as well as broader society) to give attribution to those you quote. I've been using mail and news for over 20 years now, you definitely don't need to teach me anything. End of subthread. Good Bye, Wolfgang -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
Peter Otten __pete...@web.de wrote: Frank Scafidi wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? You can use any text editor to write a python script. A simple editor which might be present ont the Pi is called nano. It shows the hotkeys to store the text and quit the editor, and thus should be self-explanatory: $ nano helloworld.py Once you have written your simple script you can look at it with the cat command: $ cat helloworld.py #!/usr/bin/env python print Hello world Invoke it with: $ python helloworld.py Hello world You can also make your script executable which means that the first line controls which program is used to run it: $ chmod +x helloworld.py $ ./helloworld.py Hello world $ If the script is in a directory listed in the PATH environment variable you can omit the path (the ./ in the above example): $ mv helloworld.py ~/bin $ helloworld.py Hello world PS: I ran the above demo on a Linux system, but not on the Raspberry Pi, so if something doesn't work as shown above it's probably due to the difference between the two systems. All of the above should work just fine on a Pi. The only thing I thing you could have added is that you also have the option of using Idle to edit and run Python programs. If you are running Raspian on your Pi then you will find an icon to run Idle sitting on the initial desktop. There's an introduction to using Idle on the Raspberry Pi at http://www.raspberrypi.org/documentation/usage/python/ -- Duncan Booth -- https://mail.python.org/mailman/listinfo/python-list
Re: Python and IDEs [was Re: Python 3 is killing Python]
Because on such operating systems, each and every application is an entirely self-contained package that doesn't need any packages or installers to use it. For people who have never used such a system it's probably difficult to see the advantages. That's the whole point. The problem is that the ones who decide (well, they pretend to, but actually can't, because they don't know the alternatives) are always people who are not even clueless. Ha! I love it. I presume that's an allusion to that-other-Wolfgang's apocryphal not even wrong comment. :) Exactly. And it's also an allusion to that statement that knowledge means to know what you don't know. Sincerely, Wolfgang -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On Tue, 12 Aug 2014 19:57:14 -0400, Frank Scafidi wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? Thanks Frank div dir=ltrdiv class=gmail_default style=font-family:georgia,serif;font-size:small;color:#3366ffI just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60#39;s amp; 70#39;s and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I#39;ve written, reload it in Python, list the program once it#39;s loaded? How do I edit a program? Are these command line functions? /div div class=gmail_default style=font-family:georgia,serif;font-size:small;color:#3366ffbr/ divdiv class=gmail_default style=font-family:georgia,serif;font-size:small;color:#3366ffThanks/ divdiv class=gmail_default style=font-family:georgia,serif;font-size:small;color:#3366ff Frank/divdiv class=gmail_default style=font-family:georgia,serif;font-size:small;color:#3366ffbr/ div/div I am not in the same league as many of the posters here when it comes to Python but fortunately i do have two Raspberry Pi's :-) if you are running the Pi connected to a TV/Monitor with the Gui enabled then you should have access to Idle as well as a number of text editors (Geany works well if installed) if you are using it from the commands line then as previously stated you need to use a text editor to write the code (Nano is part of the basic Raspian Distro and easier to use than VI/Vim) once you have created your code file type python file Name at the command prompt remember if you are connecting to the Pi remotely Via SSH it is useful to have multiple connections open, one for the text editor 1 to enable you to run the code or execute other Linux commands. If you have any more questions post them back I hope I can help (Maybe I can become useful to this group as the R-Pi expert, hopefully more productively than some of the groups other 'Experts') -- Expect the worst, it's the least you can do. -- https://mail.python.org/mailman/listinfo/python-list
Re: Arbitrary dunder attributes (was Re: odd difference calling function from class or instance variable)
On 8/13/14 5:51 AM, Chris Angelico wrote: On Wed, Aug 13, 2014 at 7:06 PM, GregS n...@my.real.address.com wrote: When I assign the reference as a class variable, the reference has __self__ set, too, so I get an extra argument passed to the function. If I assign the reference as an instance variable, then __self__ is unset so no extra argument. Spin-off from Greg's thread. The bound method object stores a reference to the original object (the thing that becomes the first argument to the target function) in __self__ (and the function in __func__). ISTM this ought to be _self (and _func), as it's intended to be private; is it really something that has language-level significance on par with __lt__ and so on? ChrisA As I see it, dunder names are those whose meaning is defined by the Python language (and/or implementation?), and whose use is typically behind-the-scenes. So len is defined by the language, but is meant to be front-and-center, so it has a nice name. __init__, __lt__, and __self__, have meanings and uses defined by Python itself, and so are reasonable as dunder names. This is a crude namespacing: Python can use any name it likes so long as its a dunder name, and I can use any name I like, so long as it isn't. Yes, the definition is fuzzy :) -- Ned Batchelder, http://nedbatchelder.com -- https://mail.python.org/mailman/listinfo/python-list
Log base 2 of large integers
I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? Thanks in advance. M. K. Shen -- https://mail.python.org/mailman/listinfo/python-list
Re: Arbitrary dunder attributes (was Re: odd difference calling function from class or instance variable)
Chris Angelico wrote: The bound method object stores a reference to the original object (the thing that becomes the first argument to the target function) in __self__ (and the function in __func__). ISTM this ought to be _self (and _func), as it's intended to be private; Why do you say they are intended to be private? Is that documented somewhere, or do you mean that if you designed the system, *you* would have intended them to be private? :-) is it really something that has language-level significance on par with __lt__ and so on? To be honest, I didn't even know about __self__, but I understood __func__ to be public. And yes, it should be public: being able to introspect a method and find the function it came from is a good thing, and sometimes useful. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
On Wed, Aug 13, 2014 at 8:05 AM, Mok-Kong Shen mok-kong.s...@t-online.de wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? A bit of googling turned up this page: http://gnumbers.blogspot.com/2011/10/logarithm-of-large-number-it-is-not.html Might be worth studying for ideas. Skip -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
Am 13.08.2014 13:55, schrieb alister: [snip] A related question: How could one write a Python program and have it run on a mobile phone in general (independent of a PC)? M. K. Shen -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? If you want the integer log2, that is, the floor of log2, the simplest way is calculate it like this: def log2(n): Return the floor of log2(n). if n = 0: raise ValueError i = -1 while n: n //= 2 i += 1 return i log2(511) = returns 8 log2(512) = returns 9 log2(513) = returns 9 Does that help? -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Python and IDEs [was Re: Python 3 is killing Python]
Wolfgang Keller wrote: I've been using mail and news for over 20 years now, you definitely don't need to teach me anything. Except common courtesy. You may have been rude for over 20 years, but I don't have to put up with it for a second longer. Good Bye, Agreed. *plonk* -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Am 13.08.2014 15:32, schrieb Steven D'Aprano: Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? If you want the integer log2, that is, the floor of log2, the simplest way is calculate it like this: def log2(n): Return the floor of log2(n). if n = 0: raise ValueError i = -1 while n: n //= 2 i += 1 return i log2(511) = returns 8 log2(512) = returns 9 log2(513) = returns 9 Does that help? That is too inaccurate (e.g. for 513 above) for me, I would like to get accuracy around 0.01 and that for very large n. M. K. Shen -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Am 13.08.2014 15:16, schrieb Skip Montanaro: http://gnumbers.blogspot.com/2011/10/logarithm-of-large-number-it-is-not.html Might be worth studying for ideas. Thanks. I think the idea may help. M. K. Shen -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? What version of Python are you using? Python 2.7 can handle fairly large integers: float(x) Traceback (most recent call last): File stdin, line 1, in module OverflowError: long int too large to convert to float math.log(x, 2) 50462500.07504181 Or maybe our idea of fairly large differ; so how large is fairly large? -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On Wed, 13 Aug 2014 15:13:34 +0200, Mok-Kong Shen wrote: Am 13.08.2014 13:55, schrieb alister: [snip] A related question: How could one write a Python program and have it run on a mobile phone in general (independent of a PC)? M. K. Shen you would need a python interpreter for that device, IIRC there is one available for android, I do not know about IOS -- It's not hard to admit errors that are [only] cosmetically wrong. -- J.K. Galbraith -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
On 13/08/2014 14:46, Mok-Kong Shen wrote: Am 13.08.2014 15:32, schrieb Steven D'Aprano: Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? If you want the integer log2, that is, the floor of log2, the simplest way is calculate it like this: removed... see below Does that help? That is too inaccurate (e.g. for 513 above) for me, I would like to get accuracy around 0.01 and that for very large n. M. K. Shen Well, we can use Steven d'A's idea as a starting point: import math def log2_floor(n): Return the floor of log2(n). if n = 0: raise ValueError i = -1 while n: n //= 2 i += 1 return i def log2(n): return log_2(n) by splitting the problem into the integer and fractional parts l2f = log2_floor(n) if n == 2**l2f: return l2f else: return l2f + math.log(n*2**-l2f, 2) Andrew -- https://mail.python.org/mailman/listinfo/python-list
Re: Arbitrary dunder attributes (was Re: odd difference calling function from class or instance variable)
On Wed, Aug 13, 2014 at 11:12 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Chris Angelico wrote: The bound method object stores a reference to the original object (the thing that becomes the first argument to the target function) in __self__ (and the function in __func__). ISTM this ought to be _self (and _func), as it's intended to be private; Why do you say they are intended to be private? Is that documented somewhere, or do you mean that if you designed the system, *you* would have intended them to be private? :-) Good point - the latter :) However, that applies only to the one leading underscore. Whether they're _self/_func or self/func, they could be regular attributes without being dunder ones. is it really something that has language-level significance on par with __lt__ and so on? To be honest, I didn't even know about __self__, but I understood __func__ to be public. And yes, it should be public: being able to introspect a method and find the function it came from is a good thing, and sometimes useful. I stand corrected on the privacy issue. But introspection would be just as easy if it were called func instead. Picking up Ned's wording: On Wed, Aug 13, 2014 at 10:11 PM, Ned Batchelder n...@nedbatchelder.com wrote: This is a crude namespacing: Python can use any name it likes so long as its a dunder name, and I can use any name I like, so long as it isn't. This concept generally applies to Python doing stuff with my class. If I define a class that I want a built-in function, operator, or language feature, to work with, I define a dunder attribute (most often a method) to tie in with that - my class, Python's functionality. When Python defines the class, it's free to do whatever it likes with naming. There are public methods and attributes, named nice and simply because there's no possibility of collision. The bound method object is like this; it could easily have any number of simply-named attributes, and most of us wouldn't even be aware of them, much less concerned that we now can't use those names. We can't possibly collide, because this is a completely different class from anything I'm working with. Even namedtuple, where it *is* possible to have collisions, doesn't go dunder - it has single-underscore public members. That's a deliberate decision to use a namespace other than the normal one of simply-named members; and dunders weren't used. In the case of __self__ and __func__, what's the advantage of this tagging? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re:Log base 2 of large integers
Mok-Kong Shen mok-kong.s...@t-online.de Wrote in message: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? Thanks in advance. M. K. Shen Easiest way to get the integer part is to convert to binary string, and take the length of that string. Call that m. Then construct a string consisting of a 1 followed by m zeroes. Convert that to a long, and divide your original number by it. Now take the log base 2 of the quotient. Add that to m and you have your answer, plus or minus 1. -- DaveA -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Steven D'Aprano wrote: Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. Is there any feasible work-around for that? If you want the integer log2, that is, the floor of log2, the simplest way is calculate it like this: def log2(n): Return the floor of log2(n). if n = 0: raise ValueError i = -1 while n: n //= 2 i += 1 return i log2(511) = returns 8 log2(512) = returns 9 log2(513) = returns 9 For base 2 there is also the bit_length() method: 511 .bit_length() 9 512 .bit_length() 10 513 .bit_length() 10 -- https://mail.python.org/mailman/listinfo/python-list
Re: Suitable Python code to scrape specific details from web pages.
On Tue, 12 Aug 2014 13:00:30 -0700, Simon Evans wrote: in accessing from the 'Racing Post' on a daily basis. Anyhow, the code Following is some starter code. You will have to look at the output, compare it to the web page, and work out how you want to process it further. Note that I use beautifulsoup and requests. The output is the html for each cell in the table with a line of + characters at the table row breaks. I suggest you look at the beautifulsoup documentation at http://www.crummy.com/software/BeautifulSoup/bs4/doc/ to work out how you may wish to select which table cells contain data you are interested in and how to extract it. #!/usr/bin/python Program to extract data from racingpost. from bs4 import BeautifulSoup import requests r = requests.get( http://www.racingpost.com/horses2/cards/card.sd? race_id=607466r_date=2014-08-13#raceTabs=sc_ ) if r.status_code == 200: soup = BeautifulSoup( r.content ) table = soup.find( table, id=sc_horseCard ) for row in table.find_all( tr ): for cell in row.find_all( td ): print cell print + else: print HTTP Status, r.status_code -- Denis McMahon, denismfmcma...@gmail.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Begginer in python trying to load a .dll
Thanks a lot. El martes, 12 de agosto de 2014 17:17:26 UTC-3, Mark Lawrence escribió: On 12/08/2014 20:25, c1234 py wrote: El martes, 12 de agosto de 2014 16:16:21 UTC-3, Christian Gollwitzer escribi�: Am 12.08.14 20:36, schrieb c1223: Hi, Im working in the development of a program based in python that allow us to contrl a spectometer. The spectometer has an .dll file. The idea is to work through this dll and operate the spectometer. The name of the .dll is AS5216.dll. I've trying with ctype, but it doesn't work. I'm begginer in python. All the comments are useful to me. For sure this DLL will come with a header file for C. You could pass it through SWIG and see if it generates a useful Python module. You need a C compiler for that route, though. Christian How can i pass it through a SWIG?, i don't know that and what it mean? Start here http://www.swig.org/ which you could easily have found for yourself, as I did by using a search engine. Also would you please access this list via https://mail.python.org/mailman/listinfo/python-list or read and action this https://wiki.python.org/moin/GoogleGroupsPython to prevent us seeing double line spacing and single line paragraphs, thanks. -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence -- https://mail.python.org/mailman/listinfo/python-list
Re: Python and IDEs [was Re: Python 3 is killing Python]
On 13/08/2014 11:42, Wolfgang Keller wrote: By the way, you keep replying to people, and quoting them, but deleting their name. Please leave the attribution in place, so we know who you are replying to. That's what the References:-Header is there for. The References header is for the benefit of news and mail clients, not human readers. Any half-decent news client will happily display a thread tree for you. Based on that References:-Header. It is rude to deliberately refuse to give attributes: So please stop being rude, and follow the convention of both email and usenet (as well as broader society) to give attribution to those you quote. I've been using mail and news for over 20 years now, you definitely don't need to teach me anything. Very funny. It strikes me that your knowledge of using mail and news is akin to that of our resident unicode expert's knowledge of the FSR. End of subthread. The subthread ends when people want it to end, not when you state that it has ended. It will not end until you stop being so downright rude in refusing to give attribution to those you quote. Good Bye, Good riddance. Ditto Steven D'Aprano's *plonk* Wolfgang -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence -- https://mail.python.org/mailman/listinfo/python-list
Why does str not have a __radd__ method?
I just tried to override str.__radd__: class Special(str): def __radd__(self, other): print(I'm special!) return super().__radd__(self, other) My __radd__ method was called correctly by the + operator, but to my surprise, the super().__radd__ call failed with: Traceback (most recent call last): File stdin, line 1, in module File stdin, line 4, in __radd__ AttributeError: 'super' object has no attribute '__radd__' Sure enough, in both Python 3.3 and 2.7: py str.__radd__ Traceback (most recent call last): File stdin, line 1, in module AttributeError: type object 'str' has no attribute '__radd__' This is especially astonishing, since int and float both have __radd__ methods, and yet numeric addition is commutative (x+y == y+x) whereas the same is not true for string concatenation. What is the rationale for str not having __radd__ method? -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
On Wed, 13 Aug 2014 15:58:02 +0200, Peter Otten __pete...@web.de wrote: Mok-Kong Shen wrote: I like to compute log base 2 of a fairly large integer n but with math.log(n,2) I got: OverflowError: long int too large to convert to float. [snip] Or maybe our idea of fairly large differ; so how large is fairly large? MK Shen used to hang out on the sci.crypt newsgroup, so we're probably talking cryptographically large rather than engineeringly large. -- To email me, substitute nowhere-spamcop, invalid-net. -- https://mail.python.org/mailman/listinfo/python-list
Need simple Python Script
Hello Guys I am new in Python programming.Currently reading the book Learn Python the Heard Way.However i need a python script which will take an image file (any standard format) from my windows pc as input.Can anybody have any solution?I use command prompt and gedit to learn python. Thanks Leon -- https://mail.python.org/mailman/listinfo/python-list
Re: Need simple Python Script
On Thu, Aug 14, 2014 at 2:11 AM, taifuls...@gmail.com wrote: I am new in Python programming.Currently reading the book Learn Python the Heard Way.However i need a python script which will take an image file (any standard format) from my windows pc as input.Can anybody have any solution?I use command prompt and gedit to learn python. If you finish studying the book, you'll have a better idea of how to go about doing things in Python, and also of how to find out more about what you can work with. For a start, you probably want a Python imaging library. You could type those three words into a search engine and see what comes back. In fact, that's probably a good start for any question you have. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
On Thu, Aug 14, 2014 at 2:12 AM, Peter Pearson ppearson@nowhere.invalid wrote: MK Shen used to hang out on the sci.crypt newsgroup, so we're probably talking cryptographically large rather than engineeringly large. So fairly large means somewhere between googolplex an Graham's Number, and after that they'd be called very large? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
Peter Pearson ppearson@nowhere.invalid: MK Shen used to hang out on the sci.crypt newsgroup, so we're probably talking cryptographically large rather than engineeringly large. I'm thinking we're talking about philosophically large. Those kinds of numbers are unwieldy from all angles, including cryptography. Marko -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Tue, 12 Aug 2014 18:36:21 -0700 (PDT) Wesley nisp...@gmail.com wrote: If my questions make you guys not so happy, I am sorry and please just ignore. I just wanna a general suggestion here in the beginning. Why I need to write such program is just having such requirements, and has nothing to do with the coding work itself. Don't say something to prove you're so noble. Hai guyz I am new to biochemistry and so I need lots of help with things.can you tell me how to make anthrax? I need it for stuff, so dont worry -- Rob Gaddi, Highland Technology -- www.highlandtechnology.com Email address domain is currently out of order. See above to fix. -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On Aug 13, 2014, at 9:57 AM, alister alister.nospam.w...@ntlworld.com wrote: On Wed, 13 Aug 2014 15:13:34 +0200, Mok-Kong Shen wrote: Am 13.08.2014 13:55, schrieb alister: [snip] A related question: How could one write a Python program and have it run on a mobile phone in general (independent of a PC)? M. K. Shen you would need a python interpreter for that device, IIRC there is one available for android, I do not know about IOS There are several for iOS, but because of Apple’s sandboxing they don’t have as much reach as you might want. -Bill -- https://mail.python.org/mailman/listinfo/python-list
Re: Need simple Python Script
In 0ec17bee-0ed6-4494-b4ab-231988031...@googlegroups.com taifuls...@gmail.com writes: I am new in Python programming.Currently reading the book Learn Python the Heard Way.However i need a python script which will take an image file (any standard format) from my windows pc as input.Can anybody have any solution? I use command prompt and gedit to learn python. What is the script supposed to *do* with the image file? -- John Gordon Imagine what it must be like for a real medical doctor to gor...@panix.comwatch 'House', or a real serial killer to watch 'Dexter'. -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Object Systems
On Wednesday, August 13, 2014 4:32:04 AM UTC-4, Michele Simionato wrote: Years ago I wrote strait: https://pypi.python.org/pypi/strait What is the difference between traits and roles? -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does str not have a __radd__ method?
On 08/13/2014 09:00 AM, Steven D'Aprano wrote: What is the rationale for str not having __radd__ method? At a guess I would say because string only knows how to add itself to other strings, so __add__ is sufficient. -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
Rob Gaddi wrote: On Tue, 12 Aug 2014 18:36:21 -0700 (PDT) Wesley nisp...@gmail.com wrote: If my questions make you guys not so happy, I am sorry and please just ignore. I just wanna a general suggestion here in the beginning. Why I need to write such program is just having such requirements, and has nothing to do with the coding work itself. Don't say something to prove you're so noble. Hai guyz I am new to biochemistry and so I need lots of help with things.can you tell me how to make anthrax? I need it for stuff, so dont worry :-) You'll only use it for good, right? -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does str not have a __radd__ method?
Ethan Furman wrote: On 08/13/2014 09:00 AM, Steven D'Aprano wrote: What is the rationale for str not having __radd__ method? At a guess I would say because string only knows how to add itself to other strings, so __add__ is sufficient. # Python 2.7 py Hello + uWorld u'HelloWorld' py unicode.__radd__ Traceback (most recent call last): File stdin, line 1, in module AttributeError: type object 'unicode' has no attribute '__radd__' My brain hurts. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Log base 2 of large integers
On Wed, Aug 13, 2014 at 10:18 AM, Chris Angelico ros...@gmail.com wrote: On Thu, Aug 14, 2014 at 2:12 AM, Peter Pearson ppearson@nowhere.invalid wrote: MK Shen used to hang out on the sci.crypt newsgroup, so we're probably talking cryptographically large rather than engineeringly large. So fairly large means somewhere between googolplex an Graham's Number, and after that they'd be called very large? I estimate that representing a googolplex as a 64-bit Python 3 int would require around 4.429 * 10**75 yottabytes of memory. So probably not that large. -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Thu, Aug 14, 2014 at 3:52 AM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: I need it for stuff, so dont worry :-) You'll only use it for good, right? He needs it for stuffing. Remind me to decline any invitation to turkey dinner that he sends. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Why does str not have a __radd__ method?
On 08/13/2014 10:55 AM, Steven D'Aprano wrote:
Ethan Furman wrote:
On 08/13/2014 09:00 AM, Steven D'Aprano wrote:
What is the rationale for str not having __radd__ method?
At a guess I would say because string only knows how to add itself to
other strings, so __add__ is sufficient.
# Python 2.7
py Hello + uWorld
u'HelloWorld'
py unicode.__radd__
Traceback (most recent call last):
File stdin, line 1, in module
AttributeError: type object 'unicode' has no attribute '__radd__'
Well, unicode is a string type, right? ;)
And for the proof:
'hello'.__add__(u'world')
u'helloworld'
u'hello'.__add__('world')
u'helloworld'
My brain hurts.
An occupational hazard of unicode, surely.
--
~Ethan~
--
https://mail.python.org/mailman/listinfo/python-list
Re: Why does str not have a __radd__ method?
On Wed, Aug 13, 2014 at 1:55 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Ethan Furman wrote: On 08/13/2014 09:00 AM, Steven D'Aprano wrote: What is the rationale for str not having __radd__ method? At a guess I would say because string only knows how to add itself to other strings, so __add__ is sufficient. # Python 2.7 py Hello + uWorld u'HelloWorld' py unicode.__radd__ Traceback (most recent call last): File stdin, line 1, in module AttributeError: type object 'unicode' has no attribute '__radd__' This happens because the str.__add__ function calls string_concat under the hood (see Objects/stringobject.c) -- there's a unicode check on the other operand that results in the result of PyUnicode_Concat being returned instead of the concatenated str type. This doesn't require that unicode define __radd__. When the left-hand operand is Unicode, PyUnicode_Concat is called directly (which is why the exception message is different for u'this' + 1 and 'this' + 1): 'this' + 1 Traceback (most recent call last): File stdin, line 1, in module TypeError: cannot concatenate 'str' and 'int' objects u'this' + 1 Traceback (most recent call last): File stdin, line 1, in module TypeError: coercing to Unicode: need string or buffer, int found All the best, Jason -- https://mail.python.org/mailman/listinfo/python-list
Re: Arbitrary dunder attributes (was Re: odd difference calling function from class or instance variable)
On 8/13/2014 5:51 AM, Chris Angelico wrote: On Wed, Aug 13, 2014 at 7:06 PM, GregS n...@my.real.address.com wrote: When I assign the reference as a class variable, the reference has __self__ set, too, so I get an extra argument passed to the function. If I assign the reference as an instance variable, then __self__ is unset so no extra argument. Spin-off from Greg's thread. The bound method object stores a reference to the original object (the thing that becomes the first argument to the target function) in __self__ (and the function in __func__). ISTM this ought to be _self (and _func), as it's intended to be private; is it really something that has language-level significance on par with __lt__ and so on? In 3.0, the iterator protocol .next became .__next__ for consistency with other syntax dunder methods. In 2.x, bound python-coded functions had im_func and im_self (and im_class for the class im_func was attached to, which has no equivalent in 3.x). Bound C-coded functions, such as [].sort, had and still have __self__ instead of im_self (and no equivalent of im_func/__func__). I presume this difference goes back to the gulf between C-coded types and Python-coded old-style classes. With old-style classes gone, im_class went and it made sense to consistently use __self__ instead of sometimes im_self (and change im_func to __func__ alone with it). In 3.0, function attributes were also dunderized. This was needed once function namespaces were unfrozen and users allowed to add possibly conflicting function attributes. dir(lambda:0) #2.7 ['__call__', '__class__', '__closure__', '__code__', '__defaults__', '__delattr__', '__dict__', '__doc__', '__format__', '__get__', '__getattribute__', '__globals__', '__hash__', '__init__', '__module__', '__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'func_closure', 'func_code', 'func_defaults', 'func_dict', 'func_doc', 'func_globals', 'func_name'] (In 2.7, many of the func attributes are duplicates: __code__ == func_code, etc, though this might not have always been true.) dir(lambda:0) ['__annotations__', '__call__', '__class__', '__closure__', '__code__', '__defaults__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__get__', '__getattribute__', '__globals__', '__gt__', '__hash__', '__init__', '__kwdefaults__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__'] The function specific attributes are documented in https://docs.python.org/3/reference/datamodel.html#the-standard-type-hierarchy The same was not done for 'internal types': code objects and co_, frame objects and f_, traceback objects and tb_. Their namespaces are still frozen. -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On 8/12/2014 9:46 PM, Chris Angelico wrote: On Wed, Aug 13, 2014 at 11:36 AM, Wesley nisp...@gmail.com wrote: If my questions make you guys not so happy, I am sorry and please just ignore. I just wanna a general suggestion here in the beginning. Why I need to write such program is just having such requirements, and has nothing to do with the coding work itself. Don't say something to prove you're so noble. The general suggestion you're getting is: Do not do this. Many of us here use CAPTCHAs and spend time keeping one step ahead of those who try to break them with software. By writing something to solve CAPTCHAs, you would be stealing time from those people. Don't do it. Am I sufficiently clear? you are clear but also missing a really good reason to break captchas. handicapped accessibility. Captchas are a huge barrier to access and in many cases push disabled users away from using a service with captchas. For me (very acute vision, crap hands) it take me 2-5 tries before I get an image I think I can read reliably, then it take 2-3 tries to type the letters in (slowly and with hand pain) correctly. My mom (80yr and going strong) sees a captcha and gives up on using the site unless I tell her what to type. one major tests for accessibility is can I automate common user tasks including tasks with context based decisions. Captchas fail that test as do many authentication system user interactions and, if one is entirely truthful, entire applications. Automating captcha solving would be a boon for the disabled or aging user. try taking this moment as a challenge. build an authentication system+ui that works for the disabled/aged and you will have an authentication system that will work better for everybody. for example, use an equivalent of ssh-agent to supply credentials to sites needing them. I can automate ssh-agent and we can make the process+UI easy enough for my mom to use it or automate it for her too. eliminate captchas, 35+million disabled people would thank you as would many more millions of the not-yet-disabled like your future self. -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Wed, Aug 13, 2014 at 9:39 PM, Eric S. Johansson e...@harvee.org wrote: you are clear but also missing a really good reason to break captchas. handicapped accessibility. Captchas are a huge barrier to access and in many cases push disabled users away from using a service with captchas. For me (very acute vision, crap hands) it take me 2-5 tries before I get an image I think I can read reliably, then it take 2-3 tries to type the letters in (slowly and with hand pain) correctly. My mom (80yr and going strong) sees a captcha and gives up on using the site unless I tell her what to type. one major tests for accessibility is can I automate common user tasks including tasks with context based decisions. Captchas fail that test as do many authentication system user interactions and, if one is entirely truthful, entire applications. Automating captcha solving would be a boon for the disabled or aging user. try taking this moment as a challenge. build an authentication system+ui that works for the disabled/aged and you will have an authentication system that will work better for everybody. for example, use an equivalent of ssh-agent to supply credentials to sites needing them. I can automate ssh-agent and we can make the process+UI easy enough for my mom to use it or automate it for her too. eliminate captchas, 35+million disabled people would thank you as would many more millions of the not-yet-disabled like your future self. I agree with you, and I don't use CAPTCHAs on any of my services, anywhere, and never have. (Partly because they *are* broken by people writing scripts, and/or by just grinding them with human solvers; but also because of the problems they cause for legit users, even those with perfect eyesight.) However, the accessibility argument is one for the removal of the captcha, *not* for its automated solving. I will not support a scripted captcha solver for any reason. If you move away from a site because you can't use it, so be it. If you get a chance, tell the owner that there are alternatives to barely-readable images; tricks involving page layouts are almost always safe, and there's infinite room to play around in them. There is no valid reason for automating something that's specifically to prevent automation. The admin needs to provide an alternative, instead. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Wed, Aug 13, 2014 at 4:39 AM, Eric S. Johansson e...@harvee.org wrote: eliminate captchas, 35+million disabled people would thank you as would many more millions of the not-yet-disabled like your future self. And so would the spammers, which is who captchas are trying to block. For ease-of-use, most sites only require captchas to be entered once upon creating the account. Some might also require additional captcha entries when the account is suspected of spamming. This is ultimately a trade-off of blocking spammers and allowing accessibility. Many of the better captchas also include options for an audio cue in addition to the default visual one. Chris -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On 8/13/2014 7:55 AM, alister wrote: I am not in the same league as many of the posters here when it comes to Python but fortunately i do have two Raspberry Pi's :-) Great! We really someone with hands-on experience. if you are running the Pi connected to a TV/Monitor with the Gui enabled then you should have access to Idle Have you verified that Idle *does* (not just *should*) run on RPi? (That would mean having tcl/tk running, with whatever *it* requires on linux.) I am working on Idle and the idea of people (especially hobbyists, students, and other amateurs) running it on microsystems would really please me. If you have any more questions post them back I hope I can help (Maybe I can become useful to this group as the R-Pi expert, Answering questions, sometimes after experiment and research, is a great way to learn. -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Thu, Aug 14, 2014 at 5:24 AM, Chris Kaynor ckay...@zindagigames.com wrote: On Wed, Aug 13, 2014 at 4:39 AM, Eric S. Johansson e...@harvee.org wrote: eliminate captchas, 35+million disabled people would thank you as would many more millions of the not-yet-disabled like your future self. And so would the spammers, which is who captchas are trying to block. There are alternatives that are both easier for legit people and harder for spambots. Some rely on the fact that humans read things two dimensionally, and scripts look at the underlying structure; so, for instance, random field names and cunning CSS to match them up with their labels can result in a form that's completely messed up in the source, but looks perfect to a user. Or you can put extra fields down that you can't see if the form's laid out properly. Or you can combine those sorts of tricks with a very simple challenge-response, like What is one plus one? that requires some specific value to be in a specific field - and if that value occurs in the wrong field, you throw the form back to the user. For some reason, everyone's jumped on the show some mangled text/numbers and ask the user to enter them bandwagon, in the same way that everyone has gone for passwords that require lower/upper/digit/symbol and (in the most annoying cases) are actually length-limited to something stupid like 12 characters. Yes, maximum, not minimum. Grumble. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Wed, Aug 13, 2014 at 3:24 PM, Chris Kaynor ckay...@zindagigames.com wrote: On Wed, Aug 13, 2014 at 4:39 AM, Eric S. Johansson e...@harvee.org wrote: eliminate captchas, 35+million disabled people would thank you as would many more millions of the not-yet-disabled like your future self. And so would the spammers, which is who captchas are trying to block. For ease-of-use, most sites only require captchas to be entered once upon creating the account. Some might also require additional captcha entries when the account is suspected of spamming. This is ultimately a trade-off of blocking spammers and allowing accessibility. Many of the better captchas also include options for an audio cue in addition to the default visual one. Chris -- https://mail.python.org/mailman/listinfo/python-list I wrote a sample form page with a simple math problem to solve -- 2 or 3 random small integers to add and put the result in a form field def produce_expression(): return a tuple: expression (str), answer (int) num_terms = random.randint(2,3) operands = [] while num_terms: n = random.randint(1,21) operands.append(n) num_terms -= 1 result = sum(operands) string_operands = map(str, operands) expression = + .join(string_operands) return expression, result Its not as annoying as captcha and I think it would work with audio browsers. Never tested -- Joel Goldstick http://joelgoldstick.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Wed, Aug 13, 2014 at 2:44 PM, Joel Goldstick joel.goldst...@gmail.com wrote: I wrote a sample form page with a simple math problem to solve -- 2 or 3 random small integers to add ... I've also seen challenge systems where they present you with a small set of images and ask you to select one with a particular property (looks like a tennis racquet, shaped like a square, etc). While simple to solve for most humans -- assuming they can read the language -- they would be difficult to solve by automated means. You can also magnify them for visually impaired or speak what they are on rollover/hover, and don't require any typing. They can make cultural assumptions (not everyone will know what a tennis racquet looks like, for instance), so the images might have to be selected carefully. Skip -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On 2014-08-13 12:24, Chris Kaynor wrote: Many of the better captchas also include options for an audio cue in addition to the default visual one. Have you actually tried to use the audio cue? They're atrocious. I got more intelligible words out of my old 8-bit SoundBlaster or a de-tuned radio station. I'm all for just ditching them (and avoiding sites that employ them). -tkc -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Wed, Aug 13, 2014 at 1:43 PM, Chris Angelico ros...@gmail.com wrote:
There are alternatives that are both easier for legit people and
harder for spambots. Some rely on the fact that humans read things two
dimensionally, and scripts look at the underlying structure; so, for
instance, random field names and cunning CSS to match them up with
their labels can result in a form that's completely messed up in the
source, but looks perfect to a user. Or you can put extra fields down
that you can't see if the form's laid out properly.
Chances are that if these tricks mess up a spambot, they will also
mess up a screen reader.
Or you can combine
those sorts of tricks with a very simple challenge-response, like
What is one plus one? that requires some specific value to be in a
specific field - and if that value occurs in the wrong field, you
throw the form back to the user.
If I ask my phone What is one plus one, a very nice sounding voice
will tell me that one plus one is two. It takes some cleverness to
come up with a question that is likely to stump a machine but not
deter a human, so the pool of such questions will necessarily be
limited. Meanwhile, all the spambot has to do is flag the question for
a human to answer and store the answer somewhere, and the question is
now useless.
For some reason, everyone's jumped on the show some mangled
text/numbers and ask the user to enter them bandwagon, in the same
way that everyone has gone for passwords that require
lower/upper/digit/symbol and (in the most annoying cases) are actually
length-limited to something stupid like 12 characters. Yes, maximum,
not minimum. Grumble.
I've seen some captcha systems that I couldn't solve after a dozen
attempts, and I have no serious vision problems. It's a problem with
no easy solution, and as computers get more powerful the intersection
of {problems machines can't solve} and {problems humans can reliably
solve} grows ever smaller.
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Re: Captcha identify
On 8/13/2014 3:27 PM, Chris Angelico wrote: I agree with you, and I don't use CAPTCHAs on any of my services, anywhere, and never have. (Partly because they *are* broken by people writing scripts, and/or by just grinding them with human solvers; but also because of the problems they cause for legit users, even those with perfect eyesight.) However, the accessibility argument is one for the removal of the captcha, *not* for its automated solving. I will not support a scripted captcha solver for any reason. If you move away from a site because you can't use it, so be it. If you get a chance, tell the owner that there are alternatives to barely-readable images; tricks involving page layouts are almost always safe, and there's infinite room to play around in them. your suggestion reminds me of the time I asked front range for help with accessibility because I had to use Goldmine on the job. Immediately after I asked for accessibility information, they told me they don't have any accessibility information because they don't have any disabled users. Yes, they really did your suggestion will probably generate a similar response. There is no valid reason for automating something that's specifically to prevent automation. The admin needs to provide an alternative, instead. There is only one valid reason based in the fact that we don't own or control many of the sites we depend on. Therefore, if I need to use a site be it government or commercial and it has a Captcha, I need to pay some form of cripple tax by either incurring pain or find/pay somebody to type for me. In this situation I thing it is perfectly acceptable to automate bypassing Captcha's. -- https://mail.python.org/mailman/listinfo/python-list
Re: Need simple Python Script
On 8/13/2014 12:11 PM, taifuls...@gmail.com wrote:
I am new in Python programming.
Currently reading the book Learn Python the Heard Way.
The title is '... Hard Way'. This is literally true. The author 'warns'
beginners to not learn Python 3, which is easier to learn than Python 2,
and works better in many ways.
Even worse, he warns people not to use Idle (or any other IDE) and use a
plain text editor like Notepad++ and a terminal to edit and run
programs. This is definitely the Hard Way compared to edit and run with
Idle. I know from experience, because I started the way he recommends
(editor and command prompt) and put off learning to use Idle. What I
fool I was.
However i need a python script which will take
an image file (any standard format) from my windows pc as input.
Python will read any file as input: bytes are bytes. Open non-text
files in binary mode. For example,
pic = open('image.jpg', 'rb') # I believe this is the same in 2.x.
However, this is not useful unless you know the file layout and enjoy
parsing it at the byte level. Better to use a package that does that
for you. For doing anything with images, you might use pillow, a
friendly updated fork of PIL (Python Imaging Library), which works on
2.6-7 and 3.2-4. I just did
C:\Programs\Python34pip install pillow
(I have been meaning to do this anyway) and a few seconds later it is
installed and 'import PIL' works.
For the docs, I had to go back to
https://pypi.python.org/pypi/Pillow/2.5.2
to find the reference to
http://pillow.readthedocs.org/en/latest/
In Idle I added 'pillow' to the help menu, linked to the url above,
using the options dialog General tab, Additional Help Sources box.
--
Terry Jan Reedy
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Re: Captcha identify
On Wed, Aug 13, 2014 at 2:01 PM, Tim Chase python.l...@tim.thechases.com wrote: On 2014-08-13 12:24, Chris Kaynor wrote: Many of the better captchas also include options for an audio cue in addition to the default visual one. Have you actually tried to use the audio cue? They're atrocious. I got more intelligible words out of my old 8-bit SoundBlaster or a de-tuned radio station. I'm all for just ditching them (and avoiding sites that employ them). Just like the images, if they were easy to understand then they would be easily defeated by a spambot with a speech recognition module. I think the effort to make captcha systems more accessible is laudable, if perhaps misguided. -- https://mail.python.org/mailman/listinfo/python-list
Re: Captcha identify
On Thu, Aug 14, 2014 at 6:16 AM, Ian Kelly ian.g.ke...@gmail.com wrote:
On Wed, Aug 13, 2014 at 1:43 PM, Chris Angelico ros...@gmail.com wrote:
There are alternatives that are both easier for legit people and
harder for spambots. Some rely on the fact that humans read things two
dimensionally, and scripts look at the underlying structure; so, for
instance, random field names and cunning CSS to match them up with
their labels can result in a form that's completely messed up in the
source, but looks perfect to a user. Or you can put extra fields down
that you can't see if the form's laid out properly.
Chances are that if these tricks mess up a spambot, they will also
mess up a screen reader.
They may, yes. I haven't seen a report on that. However, they're
hardly going to be worse at messing up screen readers than classic
captchas.
Or you can combine
those sorts of tricks with a very simple challenge-response, like
What is one plus one? that requires some specific value to be in a
specific field - and if that value occurs in the wrong field, you
throw the form back to the user.
If I ask my phone What is one plus one, a very nice sounding voice
will tell me that one plus one is two. It takes some cleverness to
come up with a question that is likely to stump a machine but not
deter a human...
The point isn't the question itself, the point is that you have to put
the answer in exactly this field. The field is visually near the
challenge, but only because of CSS, and its name is randomized in some
way as to be unpredictable. If, as some spambots do, you blat the
response into lots of fields in the expectation of catching the right
one, then the form gets rejected (I don't know of anyone whose name or
email address is two, all lowercase, and if you have even a small
pool of questions, you'll get past those weird cases by having the
next question be What colour is the sky?).
I've seen some captcha systems that I couldn't solve after a dozen
attempts, and I have no serious vision problems. It's a problem with
no easy solution, and as computers get more powerful the intersection
of {problems machines can't solve} and {problems humans can reliably
solve} grows ever smaller.
The issue isn't finding an intersection there. The issue is finding a
form of test that a computer can administer. There's a really great
test for humanness: be creative. You know that I'm a human, because
I've made posts here on python-list that are just way too complex for
a computer to synthesize. This sums up my feelings on the matter:
http://xkcd.com/810/
(Warning, language.)
ChrisA
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how to change the time string into number?
s=Aug how can i change it into 8 with some python time module? -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
On Thu, Aug 14, 2014 at 11:46 AM, luofeiyu elearn2...@gmail.com wrote: s=Aug how can i change it into 8 with some python time module? Is this homework? If not, let me set you some homework. Step 1: Read the docs for some Python time module. Step 2: See if it lets you do what you want. Step 3: Return to step 1 with a different module, until your problem is solved. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
what is the / mean in __init__(self, /, *args, **kwargs) ?
help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
luofeiyu elearn2...@gmail.com writes: s=Aug how can i change it into 8 with some python time module? What is your purpose here? If you want to parse a text value into a structured time object, don't do it piece by piece. Use the ‘time.strptime’ function. import time input_time_text = 14 Aug 2014 input_time = time.strptime(input_text, %d %b %Y) input_time.tm_mon 8 -- \“I knew it was a shocking thing to say, but … no-one has the | `\right to spend their life without being offended.” —Philip | _o__) Pullman, 2010-03-28 | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
On 2014-08-14 09:46, luofeiyu wrote: s=Aug how can i change it into 8 with some python time module? import time s = Aug time.strptime(s, %b).tm_mon 8 works for me. -tkc -- https://mail.python.org/mailman/listinfo/python-list
Re: newbee
On 08/12/2014 04:57 PM, Frank Scafidi wrote: I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 programmer back in the 60's 70's and Python is similar. I am struggling with some very fundamental things that I am not finding in the documentation. Can someone help me with the basics like how do I save a program I've written, reload it in Python, list the program once it's loaded? How do I edit a program? Are these command line functions? Thanks Frank You've already received a lot of suggestions, but I'll add one more... If you don't mind shelling out for some dead-tree documentation, there is a book in the Sam's Teach Yourself in 24 Hours series -- Python Programming for Raspberry Pi. It is a pretty good basic tutorial for Python in general, and specifically written for the RPi. You might check it out. (Current Amazon price -- $25.81) -=- Larry -=- -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
luofeiyu elearn2...@gmail.com writes: help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? I don't know, I haven't seen that before. It is confusing. At least it is acknowledged (“See [elsewhere] for accurate signature”) to be unhelpful. I suspect this is an artefact of the impedance mismatch between Python function signatures and the implementation of ‘int’ in C code. The “/” may be a placeholder for something the C implementation requires but that Python's function signature expectation doesn't allow. Perhaps Python 3's keyword-only arguments may one day help functions like that get implemented with a more useful signature, but I'm not holding my breath for that. -- \ “Religious faith is the one species of human ignorance that | `\ will not admit of even the *possibility* of correction.” —Sam | _o__) Harris, _The End of Faith_, 2004 | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
On 2014-08-14 10:01, luofeiyu wrote: help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? Where are you seeing this? Python 2.7.3 (default, Mar 13 2014, 11:03:55) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. help(int.__init__) Help on wrapper_descriptor: __init__(...) x.__init__(...) initializes x; see help(type(x)) for signature ^D Python 3.2.3 (default, Feb 20 2013, 14:44:27) [GCC 4.7.2] on linux2 Type help, copyright, credits or license for more information. help(int.__init__) Help on wrapper_descriptor: __init__(...) x.__init__(...) initializes x; see help(type(x)) for signature -tkc -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
On 2014-08-13 21:01, Tim Chase wrote: On 2014-08-14 09:46, luofeiyu wrote: s=Aug how can i change it into 8 with some python time module? import time s = Aug time.strptime(s, %b).tm_mon 8 works for me. Or, if you want a more convoluted way: import calendar as c [i for i, m in enumerate(c.month_abbr) if m == Aug].pop() 8 -tkc -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
On 08/13/2014 07:01 PM, luofeiyu wrote: help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? The '/' means that all arguments before it must be positional only. This looks like an artifact of the new Argument Clinic for C code. For example, if this also worked at the Python level, you could say: def some_func(this, that, /, spam, eggs, *, foo, bar): pass Meaning that the first two parameters could not be specified by name, the next two could be either name or position, and the last two by name only. Oh, and the * is valid Python now (the / is not -- it's solely a documentation feature at this point). -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
On 08/13/2014 07:12 PM, Tim Chase wrote: Where are you seeing this? Probably in 3.4, or the tip (what will be 3.5). -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
web2py and python3
I heard there was a presentation about web2py in my area tonight. Trying to decide if I wanted to attend, I googled about web2py and python3. I was amazed by what I found. I've never seen a group so opposed to python3. They make the old (and long-since lost) Solaris 2 wars seem tame. I don't think I'm going to be doing web2py anytime soon. :( But I was hoping it'd be a better alternative than Django for web development. -- https://mail.python.org/mailman/listinfo/python-list
a python console in bluestacks
I have installed bluestacks(an android phone emulator) on my pc,and SL4A on it.Now i can run python thish way : 1.edit an file ending with |.py|, save it in /sdcard/sl4a/scripts/yourname.py. 2.open sl4a ,and click the file to make it run. Is there a python console to type python command to run python directly such as in pc ? -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
Le 14/08/2014 04:16, Tim Chase a écrit :
On 2014-08-13 21:01, Tim Chase wrote:
On 2014-08-14 09:46, luofeiyu wrote:
s=Aug
how can i change it into 8 with some python time module?
import time
s = Aug
time.strptime(s, %b).tm_mon
8
works for me.
Or, if you want a more convoluted way:
import calendar as c
[i for i, m in enumerate(c.month_abbr) if m == Aug].pop()
8
it's a joke isn't it ?
import calendar as c
list(c.month_abbr).index('Aug')
8
BTW, why iterators does not have such an index method ?
iter(c.month_abbr).index('Aug')
Traceback (most recent call last):
File stdin, line 1, in module
AttributeError: 'iterator' object has no attribute 'index'
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Re: how to change the time string into number?
On Wed, Aug 13, 2014 at 8:51 PM, YBM ybm...@nooos.fr.invalid wrote: BTW, why iterators does not have such an index method ? Because iterators don't support indexing. In order to support such a thing, it would have to exhaust the iterator. iter(range(5))[3] Traceback (most recent call last): File stdin, line 1, in module TypeError: 'range_iterator' object is not subscriptable The only methods you can rely upon an arbitrary iterator to have are __iter__ and __next__. -- https://mail.python.org/mailman/listinfo/python-list
Re: web2py and python3
On Thu, Aug 14, 2014 at 12:21 PM, Dan Stromberg drsali...@gmail.com wrote: I don't think I'm going to be doing web2py anytime soon. :( But I was hoping it'd be a better alternative than Django for web development. I'm no expert on Python web frameworks, but the only one that I've used seems to be pretty decent: Flask. I'm happy with it. It's light-weight, it gets the job done, it doesn't much get in the way. If someone's going to hate Py3, ignore 'em and go somewhere else. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
In article 53ec2453$0$2299$426a7...@news.free.fr, YBM ybm...@nooos.fr.invalid wrote: Le 14/08/2014 04:16, Tim Chase a écrit : On 2014-08-13 21:01, Tim Chase wrote: On 2014-08-14 09:46, luofeiyu wrote: s=Aug how can i change it into 8 with some python time module? import time s = Aug time.strptime(s, %b).tm_mon 8 works for me. Or, if you want a more convoluted way: import calendar as c [i for i, m in enumerate(c.month_abbr) if m == Aug].pop() 8 it's a joke isn't it ? No, it's a song. If I could save time in a bottle The first thing that I'd like to do Is to make every month be an integer number And then I could count them with you. -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
Tim Chase python.l...@tim.thechases.com writes: On 2014-08-14 10:01, luofeiyu wrote: help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? Where are you seeing this? I see the same output as ‘luofeiyu’ reports. My Python is:: sys.version '3.4.1 (default, Jul 26 2014, 13:46:45) \n[GCC 4.9.1]' -- \“Stop — Drive sideways.” —detour sign, Kyushu, Japan | `\ | _o__) | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list
Re: what is the / mean in __init__(self, /, *args, **kwargs) ?
On 8/13/2014 10:20 PM, Ethan Furman wrote: On 08/13/2014 07:01 PM, luofeiyu wrote: help(int.__init__) Help on wrapper_descriptor: __init__(self, /, *args, **kwargs) Initialize self. See help(type(self)) for accurate signature. what is the / mean in __init__(self, /, *args, **kwargs) ? The '/' means that all arguments before it must be positional only. In particular, int.__init__(self = subclass instance) will not work because 'self' is positional only. (I don't think int.__init__ actually does anything, but a subclass of int might call it.) This looks like an artifact of the new Argument Clinic for C code. For example, if this also worked at the Python level, you could say: def some_func(this, that, /, spam, eggs, *, foo, bar): pass Meaning that the first two parameters could not be specified by name, the next two could be either name or position, and the last two by name only. Oh, and the * is valid Python now (the / is not -- it's solely a documentation feature at this point). I hope / will be valid Python in 3.5. -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
[OT] Awesome bug of the week
Nothing to do with Python, but awesome: OpenOffice won't print on Tuesdays. https://bugs.launchpad.net/ubuntu/+source/cupsys/+bug/255161/comments/28 -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Optional static typing
The BDFL Guido van Rossum is considering optional static typing (ish) for Python 3.5: https://mail.python.org/pipermail/python-ideas/2014-August/028618.html Does anyone here use function annotations? If so, what do you use them for? -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT] Awesome bug of the week
Haha! On 14 August 2014 14:54, Steven D'Aprano st...@pearwood.info wrote: Nothing to do with Python, but awesome: OpenOffice won't print on Tuesdays. https://bugs.launchpad.net/ubuntu/+source/cupsys/+bug/255161/comments/28 -- Steven -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: how to change the time string into number?
Tim Chase python.l...@tim.thechases.com:
Or, if you want a more convoluted way:
import calendar as c
[i for i, m in enumerate(c.month_abbr) if m == Aug].pop()
8
Let's not forget the much simpler solutions:
def eight(x): return 8
...
eight(Aug)
8
and:
8
8
BTW, is this a bug:
import locale
locale.getlocale()
('de_DE', 'UTF-8')
import time
time.strptime(Dez, %b).tm_mon
Traceback (most recent call last):
File stdin, line 1, in module
File /usr/lib/python3.2/_strptime.py, line 482, in _strptime_time
tt = _strptime(data_string, format)[0]
File /usr/lib/python3.2/_strptime.py, line 337, in _strptime
(data_string, format))
ValueError: time data 'Dez' does not match format '%b'
time.strftime(%b, time.localtime(time.time() + 120 * 86400))
'Dec'
time.strftime(%x)
'08/14/14'
After all, %b is documented as Locale’s abbreviated month name.
Anyway, %b *should* depend on the locale, so str[pf]time may not be
suitable to deal with email dates, for example.
Marko
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[issue20729] mailbox.Mailbox does odd hasattr() check
Roundup Robot added the comment: New changeset 5fd1f8271e8a by Serhiy Storchaka in branch '3.4': Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() http://hg.python.org/cpython/rev/5fd1f8271e8a New changeset acb30ed7eceb by Serhiy Storchaka in branch 'default': Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() http://hg.python.org/cpython/rev/acb30ed7eceb -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20729 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22189] collections.UserString missing some str methods
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- assignee: - rhettinger components: +Library (Lib) nosy: +rhettinger ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22189 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22190] Integrate tracemalloc into regrtest refleak hunting
New submission from Nick Coghlan: Trying to debug issue #22166, I realised it would be nice if there was an easy way to use tracemalloc to get a clear idea of *what's* leaking when regrtest -R reports a refleak. For that specific issue, I'm just trying to hack something together as a learning experience, but it would be good to have something more sophisticated built in to regrtest. -- components: Tests messages: 225257 nosy: haypo, ncoghlan, neologix, zach.ware priority: normal severity: normal stage: needs patch status: open title: Integrate tracemalloc into regrtest refleak hunting type: enhancement versions: Python 3.4, Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22190 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22190] Integrate tracemalloc into regrtest refleak hunting
Ezio Melotti added the comment: Isn't this the same as #19816? -- nosy: +ezio.melotti ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22190 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16773] int() half-accepts UserString
Serhiy Storchaka added the comment: Looks as there is no easy fix of this issue. This issue is particular case of issue232493. -- resolution: - duplicate stage: needs patch - resolved status: open - closed superseder: - UserString can not be used as string in calls to C routines ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16773 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20729] mailbox.Mailbox does odd hasattr() check
Changes by Serhiy Storchaka storch...@gmail.com: -- resolution: - fixed stage: patch review - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20729 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22157] FAIL: test_with_pip (test.test_venv.EnsurePipTest)
snehal added the comment: /home/python/Python-3.4.1/Modules/_ctypes/libffi/config.guess: unable to guess system type This script, last modified 2012-12-29, has failed to recognize the operating system you are using. It is advised that you download the most up to date version of the config scripts from http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD and http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD If the version you run (/home/python/Python-3.4.1/Modules/_ctypes/libffi/config.guess) is already up to date, please send the following data and any information you think might be pertinent to config-patc...@gnu.org in order to provide the needed information to handle your system. config.guess timestamp = 2012-12-29 uname -m = ppc64le uname -r = 3.13-1-powerpc64le uname -s = Linux uname -v = #1 SMP Debian 3.13.4-1 (2014-02-22) /usr/bin/uname -p = /bin/uname -X = hostinfo = /bin/universe = /usr/bin/arch -k = /bin/arch = /usr/bin/oslevel = /usr/convex/getsysinfo = UNAME_MACHINE = ppc64le UNAME_RELEASE = 3.13-1-powerpc64le UNAME_SYSTEM = Linux UNAME_VERSION = #1 SMP Debian 3.13.4-1 (2014-02-22) configure: error: cannot guess build type; you must specify one -- I tried modifying config.guess for ppc65le , and did run configure and make again... after which I got following Could not find platform dependent libraries exec_prefix Consider setting $PYTHONHOME to prefix[:exec_prefix] /usr/bin/ld: build/temp.linux-ppc64le-3.4/home/python/Python-3.4.1/Modules/_ctypes/libffi/src/powerpc/linux64.o: ABI version 1 is not compatible with ABI version 2 output /usr/bin/ld: failed to merge target specific data of file build/temp.linux-ppc64le-3.4/home/python/Python-3.4.1/Modules/_ctypes/libffi/src/powerpc/linux64.o /usr/bin/ld: build/temp.linux-ppc64le-3.4/home/python/Python-3.4.1/Modules/_ctypes/libffi/src/powerpc/linux64_closure.o: ABI version 1 is not compatible with ABI version 2 output /usr/bin/ld: failed to merge target specific data of file build/temp.linux-ppc64le-3.4/home/python/Python-3.4.1/Modules/_ctypes/libffi/src/powerpc/linux64_closure.o -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22157 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22034] posixpath.join() and bytearray
Serhiy Storchaka added the comment: Copied nosy list from issue15180 and issue15377. -- nosy: +Arfrever, chris.jerdonek, eric.araujo, georg.brandl, pitrou, r.david.murray, terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22034 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22065] Update turtledemo menu creation
Serhiy Storchaka added the comment: Terry? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22065 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
