ANN : PySWITCH Release – 0.1alpha
Hi All, I am glad to announce the first alpha release of PySWITCH. http://pyswitch.sf.net The idea of PySWITCH is to offer a complete library to Python and Twisted programmers for interacting with FreeSWITCH using EventSocket interface. The target is to cover all FreeSWITCH API commands and Dialplan tools. PySWITCH handles all the low level details in executing FreeSWITCH commands, so the programmer can easily concentrate on quickly building FreeSWITCH applications. As an example, the API functions offered by PySWITCH often executes many FreeSWITCH commands under the hood and finally returns the desired result. Suppose you execute a background job, PySWITCH API will automatically wait and catch the backgroundjob event parse the result and will fire the deferred. The current release covers good amount of API commands and a few Dialplan tools. The protocol communication issues are ironed out. It has a nice event call back interface. I’ll present its usage in couple of tutorials soon. -- Thanks Regards, Godson Gera http://godson.in -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
[ANNOUNCE] MyHDL 0.7
I'm happy to announce MyHDL 0.7. MyHDL is Python used as a Hardware Description Language. Overview: http://www.myhdl.org/doku.php/overview What's new in this release: http://www.myhdl.org/doc/0.7/whatsnew/0.7.html Download: http://sourceforge.net/project/showfiles.php?group_id=91207 Best regards, Jan Decaluwe -- Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com Python as a HDL: http://www.myhdl.org VHDL development, the modern way: http://www.sigasi.com Analog design automation: http://www.mephisto-da.com World-class digital design: http://www.easics.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
hai
webpage : http://123maza.com/35/city149/ -- http://mail.python.org/mailman/listinfo/python-list
hai how are you
webpage : http://123maza.com/35/city149/ -- http://mail.python.org/mailman/listinfo/python-list
mutiprocessing, manager, list threading ?
Hi,
Testing if I could be able to use multiprocessing BaseManager to manage
list of instance pointers between processes. If my intance inherits
Thread, I get pickling error about _thread.lock.
I found Steven Bethard's recipe for this kind of problem in
http://bytes.com/topic/python/answers/552476-why-cant-you-pickle-instancemethods,
but I do not to get the idea how to copyreg the _thread.lock.
Is it even possible to save instance pointer to list which is
synchronized between separate processes ?
Thanks a lot,
-Mika
Client side code:
from multiprocessing.managers import BaseManager
from threading import Thread, Lock
class ListManager(BaseManager):
pass
class Testing(Thread):
def __init__(self):
Thread.__init__(self)
def nothing(self):
print(Nothing)
ListManager.register('get_list')
ListManager.register('Testing',Testing)
m = ListManager(address=('', 5), authkey=b'abc')
m.connect()
list1 = m.get_list()
test = Testing()
print(TEST:,test)
list1.append(test)
print(TEST:,test)
Error:
---
Traceback (most recent call last):
File mpclit.py, line 23, in module
list1.append(test)
File string, line 2, in append
File /usr/local/lib/python3.1/multiprocessing/managers.py, line 735,
in _callmethod
conn.send((self._id, methodname, args, kwds))
File /usr/local/lib/python3.1/pickle.py, line 1358, in dumps
Pickler(f, protocol, fix_imports=fix_imports).dump(obj)
_pickle.PicklingError: Can't pickle built-in method release of
_thread.lock object at 0x1af710f0: attribute lookup __main__.release
failed
References:
--
http://bytes.com/topic/python/answers/552476-why-cant-you-pickle-instancemethods
--
http://mail.python.org/mailman/listinfo/python-list
Python - NAWIT / Community
I just wanted to put out a question about IDE's but this is NAWIT - not another which ide thread. My question relates to community contribution. My concern arose when recently installing the pydev.org extensions in Eclipse. Now as far as my understanding goes the licensing on both is open source GPL. However Pydev became open source as part of aptana's acquistion, and for the moment pydev can be installed as part of the Aptana studio 2/3 releases individually as a plugin, but moving on if you vist the aptana site there is sweet little about python on their site, their site is dominated by Radrails. Can't help thinking they open sourced Pydev so they could bench it. So I started thinking that the only consistent env each python person has is idle as it ships in the install. Sometimes we can contribute with money and sometimes with time, if I was to contribute money to ensure that I and all new coming python programmers could have a first class development environment to use what would I donate to? At the moment no particular group seems applicable. Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Maybe its just my wish, maybe something already exists, but to my mind why is there not a central python community ide or plugin setup like pydev or using pydev(since currently it is very good - to me), which I know or at least could confidently donate time or money to further python. This could apply to many python area's does python use easy_install or pypm, well if you want camelot or zope (unless you have business edition) its easy_install, but you wont find an ide with built in egg or pypm support? Why every Ruby ide has gems manager, and for that fact look at netbeans, the ide is good but support for python is mentioned on a far flung community page where some developers are trying to maintain good python support. PS they seem to be doing a good job, but a review of the mailing list archives shows little activity. One could say that activestate puts in good support but then they do not provide an ide within the means of the average part time person retailing its main edition at over $300, Pycharm a good ide at $99 but then where is my money going. I think a community plugin architecture which contained components like pydev, pyscripter, eclipse and eggs/pypm packages would give a place I can contribute time as my skills grow and confidently donate money knowing I am assisting the development of community tools and packages we all can use. No need to reinvent the wheel most things already exist, for example apt-get rpm style package management time tested and could be easily used to manage python eggs for example. Anyway I have had my 2 cents, if someone is contributing more than I know, and this wasn't intended to dimnish anyone's effort, just wanting to look to growing and fostering a stronger python community. Sayth -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Can't help thinking they open sourced Pydev so they could bench it. So? That isn't uncommon at all; to Open Source when you've moved on. I started thinking that the only consistent env each python person has is idle as it ships in the install. There is a plethora of Python IDE's [personally I use Monodevelop, which supports Python, and is fast and stable]. Sometimes we can contribute with money and sometimes with time, if I was to contribute money to ensure that I and all new coming python programmers could have a first class development environment to use what would I donate to? At the moment no particular group seems applicable. Many projects accept donations via PayPal. Sourceforge supports this. Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Maybe its just my wish, maybe something already exists, but to my mind why is there not a central python community ide or plugin setup like pydev or using pydev(since currently it is very good - to me), which I know or at least could confidently donate time or money to further python. You could checkout the code of any Python IDE and hack on it. I think a community plugin architecture which contained components like pydev, pyscripter, eclipse and eggs/pypm packages would give a place I can contribute time as my skills grow and confidently donate money knowing I am assisting the development of community tools and packages we all can use. So just do it. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Dec 28, 10:16 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Can't help thinking they open sourced Pydev so they could bench it. So? That isn't uncommon at all; to Open Source when you've moved on. I started thinking that the only consistent env each python person has is idle as it ships in the install. There is a plethora of Python IDE's [personally I use Monodevelop, which supports Python, and is fast and stable]. Sometimes we can contribute with money and sometimes with time, if I was to contribute money to ensure that I and all new coming python programmers could have a first class development environment to use what would I donate to? At the moment no particular group seems applicable. Many projects accept donations via PayPal. Sourceforge supports this. Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Maybe its just my wish, maybe something already exists, but to my mind why is there not a central python community ide or plugin setup like pydev or using pydev(since currently it is very good - to me), which I know or at least could confidently donate time or money to further python. You could checkout the code of any Python IDE and hack on it. I think a community plugin architecture which contained components like pydev, pyscripter, eclipse and eggs/pypm packages would give a place I can contribute time as my skills grow and confidently donate money knowing I am assisting the development of community tools and packages we all can use. So just do it. Yes you can answer questions, but have you really? Your answer seems to be things are open source so who cares about community. Many projects accept donations via PayPal. Sourceforge supports this. Of course any fool can throw his/her money away thats no challenge why even use Paypal, I could have fun and by 10 bottles of vino and hand them out to recovering alcoholics. Don't answer things just for the sake of it, if you have nothing producive to say about furthering python and its community then say that. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Dec 28, 10:24 pm, flebber flebber.c...@gmail.com wrote: On Dec 28, 10:16 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Can't help thinking they open sourced Pydev so they could bench it. So? That isn't uncommon at all; to Open Source when you've moved on. I started thinking that the only consistent env each python person has is idle as it ships in the install. There is a plethora of Python IDE's [personally I use Monodevelop, which supports Python, and is fast and stable]. Sometimes we can contribute with money and sometimes with time, if I was to contribute money to ensure that I and all new coming python programmers could have a first class development environment to use what would I donate to? At the moment no particular group seems applicable. Many projects accept donations via PayPal. Sourceforge supports this. Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Maybe its just my wish, maybe something already exists, but to my mind why is there not a central python community ide or plugin setup like pydev or using pydev(since currently it is very good - to me), which I know or at least could confidently donate time or money to further python. You could checkout the code of any Python IDE and hack on it. I think a community plugin architecture which contained components like pydev, pyscripter, eclipse and eggs/pypm packages would give a place I can contribute time as my skills grow and confidently donate money knowing I am assisting the development of community tools and packages we all can use. So just do it. Yes you can answer questions, but have you really? Your answer seems to be things are open source so who cares about community. Many projects accept donations via PayPal. Sourceforge supports this. Of course any fool can throw his/her money away thats no challenge why even use Paypal, I could have fun and by 10 bottles of vino and hand them out to recovering alcoholics. Don't answer things just for the sake of it, if you have nothing producive to say about furthering python and its community then say that. My apologise I didn't mean to be that aggressive. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Tue, 2010-12-28 at 03:24 -0800, flebber wrote: On Dec 28, 10:16 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Yes you can answer questions, but have you really? Your answer seems to be things are open source so who cares about community. Many projects accept donations via PayPal. Sourceforge supports this. Of course any fool can throw his/her money away thats no challenge why even use Paypal, I could have fun and by 10 bottles of vino and hand them out to recovering alcoholics. Don't answer things just for the sake of it, if you have nothing producive to say about furthering python and its community then say that. I provided two concrete points, thank you: (1) Is a project actively developed? Look at the repo. That is the answer to the question [this isn't necessarily obvious to those new to Open Source]. (1.1.) Is PyDev a potential unifying force amoung IDEs? Which is the implied question - that is up to the OP and others who do/do-not contribute to it. (2) How can I donate cash? There is a fairly standard mechanism for that. Otherwise I think the OP's thoughts on community and how Open Source works are somewhat flawed. Community is a manifestation of people *doing* things; it does *not* arise out of people being concerned about things [since doing is quite apparently not a natural result of concern. Concern is like watching TV. Doing is getting out of the chair.] -- http://mail.python.org/mailman/listinfo/python-list
Re: Trying to parse a HUGE(1gb) xml file
On Tue, 2010-12-28 at 07:08 +0100, Stefan Behnel wrote: Roy Smith, 28.12.2010 00:21: To go back to my earlier example of Parental-AdvisoryFALSE/Parental-Advisory using 432 bits to store 1 bit of information, stuff like that doesn't happen in marked-up text documents. Most of the file is CDATA (do they still use that term in XML, or was that an SGML-ism only?). The markup is a relatively small fraction of the data. I'm happy to pay a factor of 2 or 3 to get structured text that can be machine processed in useful ways. I'm not willing to pay a factor of 432 to get tabular data when there's plenty of other much more reasonable ways to encode it. If the above only appears once in a large document, I don't care how much space it takes. If it appears all over the place, it will compress down to a couple of bits, so I don't care about the space, either. +1 It's readability that counts here. Try to reverse engineer a binary format that stores the above information in 1 bit. I think a point many of the arguments against XML miss is the HR cost of custom solutions. Every time you come up with a cool super-efficient solution it has to be weighed against the increase in the tool-stack [whereas XML is, essentially, built-in] and nobody-else-knows-about-your-super-cool-solution [1]. IMO, tool-stack bloat is a *big* problem in shops with an Open Source tendency. Always tossing the new and shiny thing [it's free!] into the bucket for some theoretical benefit. [This is an unrecognized benefit to expensive software - it creates focus]. Soon the bucket is huge and maintaining it becomes a burden. [1] The odds you sufficiently documented your super-cool-solution is probably nil. So I'm one of those you'd have to make a *really* good argument *not* to use XML. XML is known, the tools are good, the knotty problems are solved [thanks to the likes of SAX, lxml / ElementTree, and ElementFlow]. If the premise argument is bloat I'd probably dismiss it out of hand since removing that bloat will necessitate adding bloat somewhere else; that somewhere else almost certainly being more expensive. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Dec 28, 10:37 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 03:24 -0800, flebber wrote: On Dec 28, 10:16 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Yes you can answer questions, but have you really? Your answer seems to be things are open source so who cares about community. Many projects accept donations via PayPal. Sourceforge supports this. Of course any fool can throw his/her money away thats no challenge why even use Paypal, I could have fun and by 10 bottles of vino and hand them out to recovering alcoholics. Don't answer things just for the sake of it, if you have nothing producive to say about furthering python and its community then say that. I provided two concrete points, thank you: (1) Is a project actively developed? Look at the repo. That is the answer to the question [this isn't necessarily obvious to those new to Open Source]. (1.1.) Is PyDev a potential unifying force amoung IDEs? Which is the implied question - that is up to the OP and others who do/do-not contribute to it. (2) How can I donate cash? There is a fairly standard mechanism for that. Otherwise I think the OP's thoughts on community and how Open Source works are somewhat flawed. Community is a manifestation of people *doing* things; it does *not* arise out of people being concerned about things [since doing is quite apparently not a natural result of concern. Concern is like watching TV. Doing is getting out of the chair.] Fair point. You have mistaken somewhat what I intended, partly my fault due to the verbosity. I wanted gaugue feedback on others perception of the current status quo. I am happy personally currently, currently being the main word. Community is a manifestation of people *doing* things; it does *not* arise out of people being concerned about things But concern is derived from interaction and observation and like fear and joy tells us we need to take an action. If someone chooses to sir idly by good for them I haven't the time or inclination personally. Tony Robbins Acheiving a goal is simple, decide what your goal is, set out towards it and consistently review whether you are getting closer or further from your goal and take action immediately. From a language perspective going to python 3 this definitely seems to be occurring well and strongly lead. Sometimes the fault in open source is the lack of a crystalized and shared goal and proper infrastructure.Gentoo as an example. Could get to they were going because they didn't share the same vision of what it was. I meant no attack by reviewing, just a somewhat newbies observations of python. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Dec 28, 11:10 pm, flebber flebber.c...@gmail.com wrote: On Dec 28, 10:37 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 03:24 -0800, flebber wrote: On Dec 28, 10:16 pm, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 02:26 -0800, flebber wrote: Is pydev actively being developed and for who? SPE is a great idea but is Stan still developing? Pyscripter is good but not 64 capable. Plus none of these projects seem community centric. Why not just check the repo and see the real answer for yourself? It is Open Source after all. https://github.com/aptana/Pydev/commits/master Yes you can answer questions, but have you really? Your answer seems to be things are open source so who cares about community. Many projects accept donations via PayPal. Sourceforge supports this. Of course any fool can throw his/her money away thats no challenge why even use Paypal, I could have fun and by 10 bottles of vino and hand them out to recovering alcoholics. Don't answer things just for the sake of it, if you have nothing producive to say about furthering python and its community then say that. I provided two concrete points, thank you: (1) Is a project actively developed? Look at the repo. That is the answer to the question [this isn't necessarily obvious to those new to Open Source]. (1.1.) Is PyDev a potential unifying force amoung IDEs? Which is the implied question - that is up to the OP and others who do/do-not contribute to it. (2) How can I donate cash? There is a fairly standard mechanism for that. Otherwise I think the OP's thoughts on community and how Open Source works are somewhat flawed. Community is a manifestation of people *doing* things; it does *not* arise out of people being concerned about things [since doing is quite apparently not a natural result of concern. Concern is like watching TV. Doing is getting out of the chair.] Fair point. You have mistaken somewhat what I intended, partly my fault due to the verbosity. I wanted gaugue feedback on others perception of the current status quo. I am happy personally currently, currently being the main word. Community is a manifestation of people *doing* things; it does *not* arise out of people being concerned about things But concern is derived from interaction and observation and like fear and joy tells us we need to take an action. If someone chooses to sir idly by good for them I haven't the time or inclination personally. Tony Robbins Acheiving a goal is simple, decide what your goal is, set out towards it and consistently review whether you are getting closer or further from your goal and take action immediately. From a language perspective going to python 3 this definitely seems to be occurring well and strongly lead. Sometimes the fault in open source is the lack of a crystalized and shared goal and proper infrastructure.Gentoo as an example. Could get to they were going because they didn't share the same vision of what it was. I meant no attack by reviewing, just a somewhat newbies observations of python. Edit Gentoo couldn't get to where they were going because of lack of vision and a shared goal. -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
Steven D'Aprano wrote:
class InternedTuple(tuple):
... _cache = {}
... def __new__(cls, *args):
... t = super().__new__(cls, *args)
... return cls._cache.setdefault(t, t)
That looks good. The only thing that first bothered me is that it creates an
object and then possibly discards it again. However, there is no way around
that, since at least the key to the dict must be created for lookup. Since
key and value are the same here, this is even for free.
What I also found was that with the above, I can't provide __eq__ and __ne__
that just check for identity. If I do, the lookup in setdefault() will never
find an existing tuple and I will never save memory for a single object.
Thanks!
Uli
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python - NAWIT / Community
On Tue, 28 Dec 2010 04:10:15 -0800, flebber wrote: Tony Robbins Acheiving a goal is simple, decide what your goal is, set out towards it and consistently review whether you are getting closer or further from your goal and take action immediately. Writing bug-free code is simple: decide what you want your code to do, write code to do it, and consistently review whether you are getting more or fewer bugs, and take action immediately. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Trying to parse a HUGE(1gb) xml file
Stefan Behnel stefan...@behnel.de wrote in message news:mailman.335.1293516506.6505.python-l...@python.org... Roy Smith, 28.12.2010 00:21: To go back to my earlier example of Parental-AdvisoryFALSE/Parental-Advisory using 432 bits to store 1 bit of information, stuff like that doesn't happen in marked-up text documents. Most of the file is CDATA (do they still use that term in XML, or was that an SGML-ism only?). The markup is a relatively small fraction of the data. I'm happy to pay a factor of 2 or 3 to get structured text that can be machine processed in useful ways. I'm not willing to pay a factor of 432 to get tabular data when there's plenty of other much more reasonable ways to encode it. If the above only appears once in a large document, I don't care how much space it takes. If it appears all over the place, it will compress down to a couple of bits, so I don't care about the space, either. It's readability that counts here. Try to reverse engineer a binary format that stores the above information in 1 bit. The above typically won't get much below 2 bytes (as one character plus a separator, eg. in comma-delimited-format). So it's more like 27:1, if you're going to stay with a text format. Still, that's 27 times as much as it need be. Readability is fine, but why does the full, expanded, human-readable textual format have to be stored on disk too, and for every single instance? What if the 'Parental-Advisory' tag was even longer? Just how long do these things have to get before even the advocates here admit that it's getting ridiculous? Isn't it possible for XML to define a shorter alias for these tags? Isn't there a shortcut available for /Parental-Advisory in simple examples like this (I seem to remember something like this)? And why not use 1 and 0 for TRUE and FALSE? Even the consumer appliances in my house have 1 and 0 on their power switches! With the advantage that they are internationally recognised. -- Bartc -- http://mail.python.org/mailman/listinfo/python-list
etl tool!!!!!
Is there any efficient etl tool developed in python? -- http://mail.python.org/mailman/listinfo/python-list
Re: etl tool!!!!!
Am 28.12.2010 13:57, schrieb krishna kumar: Is there any efficient etl tool developed in python? Yes, Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: etl tool!!!!!
On Tue, 2010-12-28 at 07:57 -0500, krishna kumar wrote: Is there any efficient etl tool developed in python? What does efficient mean to you? I work on a Python workflow solution that I use to do ETL. https://sourceforge.net/projects/coils/ https://lists.sourceforge.net/lists/listinfo/coils-project -- Adam Tauno Williams awill...@whitemice.org LPIC-1, Novell CLA http://www.whitemiceconsulting.com OpenGroupware, Cyrus IMAPd, Postfix, OpenLDAP, Samba -- http://mail.python.org/mailman/listinfo/python-list
NameError: global name 'btn_Matlab' is not defined ?
hello, Never seen this before and I've no explanation whatsoever (Python 2.6) I've some dynamic generated code, one of objects generated is a wx.Button, called 'btn_Matlab'. After the code is generated, I can see that the button is created in the local namespace print locals()['btn_Matlab'] wx._controls.Button; proxy of Swig Object of type 'wxButton *' at 0x3602d28 but if I try to print the button (at exactly the same location), I get an error print btn_Matlab NameError: global name 'btn_Matlab' is not defined ? Why isn't the compiler first checking the local namespace ? any clues ? thanks, Stef Mientki -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
On Tue, 28 Dec 2010 13:42:39 +0100, Ulrich Eckhardt wrote:
Steven D'Aprano wrote:
class InternedTuple(tuple):
... _cache = {}
... def __new__(cls, *args):
... t = super().__new__(cls, *args)
... return cls._cache.setdefault(t, t)
That looks good. The only thing that first bothered me is that it
creates an object and then possibly discards it again. However, there is
no way around that, since at least the key to the dict must be created
for lookup. Since key and value are the same here, this is even for
free.
What I also found was that with the above, I can't provide __eq__ and
__ne__ that just check for identity. If I do, the lookup in setdefault()
will never find an existing tuple and I will never save memory for a
single object.
If all you want is to save memory, you don't need to change the __eq__
method. But if you still want to, try this:
# Untested
class InternedTuple(tuple):
_cache = {}
def __new__(cls, *args):
t = super().__new__(cls, *args)
return cls._cache.setdefault(args, t)
def __eq__(self, other):
return self is other
def __ne__(self, other):
return self is not other
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
Re: NameError: global name 'btn_Matlab' is not defined ?
On Tue, 28 Dec 2010 14:34:19 +0100, Stef Mientki wrote: hello, Never seen this before and I've no explanation whatsoever (Python 2.6) I've some dynamic generated code, one of objects generated is a wx.Button, called 'btn_Matlab'. How do you generate the code? What code is generated? What does it do? After the code is generated, I can see that the button is created in the local namespace print locals()['btn_Matlab'] wx._controls.Button; proxy of Swig Object of type 'wxButton *' at 0x3602d28 but if I try to print the button (at exactly the same location), I get an error print btn_Matlab NameError: global name 'btn_Matlab' is not defined ? Why isn't the compiler first checking the local namespace ? any clues ? My guess is that you've declared btn_Matlab as global, and then dynamically created a local with the same name using exec or similar. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
Steven D'Aprano, 28.12.2010 15:11:
On Tue, 28 Dec 2010 13:42:39 +0100, Ulrich Eckhardt wrote:
Steven D'Aprano wrote:
class InternedTuple(tuple):
... _cache = {}
... def __new__(cls, *args):
... t = super().__new__(cls, *args)
... return cls._cache.setdefault(t, t)
That looks good. The only thing that first bothered me is that it
creates an object and then possibly discards it again. However, there is
no way around that, since at least the key to the dict must be created
for lookup. Since key and value are the same here, this is even for
free.
What I also found was that with the above, I can't provide __eq__ and
__ne__ that just check for identity. If I do, the lookup in setdefault()
will never find an existing tuple and I will never save memory for a
single object.
If all you want is to save memory, you don't need to change the __eq__
method. But if you still want to, try this:
# Untested
Yep, that' the problem. ;)
class InternedTuple(tuple):
_cache = {}
def __new__(cls, *args):
t = super().__new__(cls, *args)
return cls._cache.setdefault(args, t)
def __eq__(self, other):
return self is other
def __ne__(self, other):
return self is not other
What Ulrich meant, was: doing this will actually kill the caching, because
the first time the comparison is called is when looking up the tuple while
adding it to the interning dict. Since the new tuple is, well, new, it will
not be equal (read: identical) to any cached tuple, thus resulting in a new
entry regardless of its content.
Stefan
--
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Re: Interning own classes like strings for speed and size?
Am 28.12.2010 15:11, schrieb Steven D'Aprano:
# Untested
class InternedTuple(tuple):
_cache = {}
def __new__(cls, *args):
t = super().__new__(cls, *args)
return cls._cache.setdefault(args, t)
def __eq__(self, other):
return self is other
def __ne__(self, other):
return self is not other
The code doesn't work, you have to change super().__new__(cls, *args) to
super().__new__(cls, args). Don't ask me why. I'm surprised, too.
InternedTuple(1)
Traceback (most recent call last):
File stdin, line 1, in module
File stdin, line 4, in __new__
TypeError: 'int' object is not iterable
Also this code is going to use much more memory than an ordinary tuple
since every instance of InternedTuple has a __dict__ attribute. This
code works but I had to move the cache outside the class because of
__slots__.
_ituple_cache = {}
class ituple(tuple):
__slots__ = () # no __dict__
def __new__(cls, *args):
cached = _ituple_cache.get(args)
if cached is not None:
return cached
self = _ituple_cache[args] = super(ituple, cls).__new__(cls, args)
return self
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Replacing Greenlets with Threads or Processes
I need to replace the use of 'greenlets' in an application with threads or processes, but as I've never used greenlets, I don't know where to start when replacing them. Could anyone explain to me how I can do this? -- http://mail.python.org/mailman/listinfo/python-list
Re: while True or while 1
hehehehehehe...
On 17/12/2010 2.01, Steven D'Aprano wrote:
On Thu, 16 Dec 2010 23:34:21 +, BartC wrote:
In terms of a more realistic function (admittedly still a little
contrived, as the loop would be written differently), I tried this:
def p2(n):
p=1
while True:
if n=p: return p
p=1
return 0
for i in xrange(100):
x=p2(i)
p2() calculates the smallest power of 2= it's operand.
Using while True as shown, it took 3.4 seconds. Using While 1, it took
2.6 seconds (Python 2.5).
Right. And a saving of 0.8 microseconds per iteration is a micro-
optimization which is likely to be invisible in any real situation.
I mean, yes, you saved almost an entire second. Wow. Save another 179 of
them and you'll almost have enough time to make yourself a coffee.
Bart, we get it. Nobody denies that the optimization is real, only that
it is generally meaningful. Who cares whether it takes 2 seconds or 4
seconds to generate one million results if the rest of the application
takes 3 minutes to run?
*If* your application is such that saving 0.8 microseconds per iteration
actually is useful, AND your loop has to be written as a while True loop,
then this *may* be a useful micro-optimization to save 0.8 microseconds
per iteration. That's a vanishingly tiny proportion of all code written.
If your code happens to meet those conditions, then by all means use
while 1. Or move to Python 3, where while True has the same
optimization performed.
But in general, such micro-optimizations are not terribly useful. If you
shave off 1 second off a program that runs in 3 seconds, chances are
nobody is even going to notice. Two seconds or three, who cares? Either
way, it's too short to do anything else, and not long enough to matter.
If you shave off an hour off a program that takes 20 hours, who is going
to care?
But so long as it doesn't introduce bugs, or make maintenance harder, or
add complexity, such micro-optimizations don't harm either.
HEY! That was MY argument! ;-))
Newsgroups: comp.lang.python
Subject: Re: If/then style question
Date: Tue, 21 Dec 2010 20:54:02 +0100
I'd bet you would stress your point Steven! But you don't need to persuade me,
I do already agree.
I just meant to say that, when the advantage is little, there's no need to
rewrite a working function.
And that with modern CPUs, if tests take so little time, that even some
redundant one is not so much of a nuisance.
in your working example, the payload is just a couple of integer calculations, that take very little time too. So the overhead due
to redundant if tests does show clearly. And also in that not-really-real situation, 60% overhead just meant less than 3 seconds.
Just for the sake of discussion, I tried to give both functions some plough to pull, and a worst-case situation too:
t1 = Timer('for x in range(100): print func1(0),',
... 'from __main__ import func1')
t2 = Timer('for x in range(100): print func2(0),',
... 'from __main__ import func2')
min(t1.repeat(number=1, repeat=1))
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1
53.011015366479114
min(t2.repeat(number=1, repeat=1))
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 -1 -1 -1 -1 -1 -1 -1
47.55442856564332
that accounts for a scant 11% overhead, on more than one million tests per
cycle.
That said, let's make really clear that I would heartily prefer func2 to func1, based both on readability and speed. Thank you for
having spent some time playing with me!
Francesco
On 19/12/2010 1.05, Steven D'Aprano wrote:
Well, let's try it with a working (albeit contrived) example. This is
just an example -- obviously I wouldn't write the function like this in
real life, I'd use a while loop, but to illustrate the issue it will do.
def func1(n):
result = -1
done = False
n = (n+1)//2
if n%2 == 1:
result = n
done = True
if not done:
n = (n+1)//2
if n%2 == 1:
result = n
done = True
if not done:
n = (n+1)//2
if n%2 == 1:
result = n
done = True
if not done:
for i in range(100):
if not done:
n = (n+1)//2
if n%2 == 1:
result = n
done = True
return result
def func2(n):
n = (n+1)//2
if n%2 == 1:
return n
n = (n+1)//2
if n%2 == 1:
return n
n = (n+1)//2
if n%2
hi
-- http://mail.python.org/mailman/listinfo/python-list
Re: Replacing Greenlets with Threads or Processes
On 12/28/2010 6:59 AM Nathanael Abbotts said... I need to replace the use of 'greenlets' in an application with threads or processes, but as I've never used greenlets, I don't know where to start when replacing them. Could anyone explain to me how I can do this? Looks like your choice may be limited to processes... http://groups.google.com/group/pycsp/browse_thread/thread/45209957e27e0293/b67445b092872750?q=python+greenlets Emile -- http://mail.python.org/mailman/listinfo/python-list
Re: Trying to parse a HUGE(1gb) xml file
BartC b...@freeuk.com writes: Roy Smith, 28.12.2010 00:21: To go back to my earlier example of Parental-AdvisoryFALSE/Parental-Advisory Isn't it possible for XML to define a shorter alias for these tags? Isn't there a shortcut available for /Parental-Advisory in simple examples like this (I seem to remember something like this)? Yes, you can define your own entities in a DTD: !ENTITY paf Parental-AdvisoryFALSE/Parental-Advisory !ENTITY pat Parental-AdvisoryTRUE/Parental-Advisory Later, in your document: paf; pat; Although, this is a bit of a contrived example - if space is such a major concern, one wouldn't be so wasteful of it to begin with, but might instead use a short tag form whose value attribute defaults to FALSE. !ELEMENT advisory EMPTY !ATTLIST advisory value (TRUE | FALSE) FALSE Later, in your document: movie title=Bambiadvisory//movie movie title=Scarfaceadvisory value=TRUE//movie To save even more space, one could instead define a pa attribute as part of the movie element, with a default value that would then take no space at all: !ATTLIST movie pa (TRUE | FALSE) FALSE Later, in your document: movie name=Bambi/ movie name=Scarface pa=TRUE/ When you see someone doing stupid things with a tool, it's usually not the tool's fault. Far more often, it's someone using the wrong tool for the task at hand, or using the right tool the wrong way. And why not use 1 and 0 for TRUE and FALSE? Sounds reasonable in general, although a parental advisory would more often be a range of possible values (G, PG, R, MA, etc.) rather than a boolean. sherm-- -- Sherm Pendley http://camelbones.sourceforge.net Cocoa Developer -- http://mail.python.org/mailman/listinfo/python-list
Re: Replacing Greenlets with Threads or Processes
Processes are better for me - the application is already multiprocessing based. -- http://mail.python.org/mailman/listinfo/python-list
Re: Trying to parse a HUGE(1gb) xml file
In article ifcmru$ab...@news.eternal-september.org, BartC b...@freeuk.com wrote: Still, that's 27 times as much as it need be. Readability is fine, but why does the full, expanded, human-readable textual format have to be stored on disk too, and for every single instance? Well, I know the answer to that one. The particular XML feed I'm working with is a dump from an SQL database. The element names in the XML are exactly the same as the column names in the SQL database. The difference being that in the database, the string Parental-Advisory appears in exactly one place, in some schema metadata table. In the XML, it appears (doubled!) once per row. It's still obscene. That fact that I understand the cause of the obscenity doesn't make it any less so. Another problem with XML is that some people don't use real XML tools to write their XML files. DTD? What's that? So you end up with tag soup that the real XML tools can't parse on the other end. -- http://mail.python.org/mailman/listinfo/python-list
Re: Replacing Greenlets with Threads or Processes
That thread seems to deal with mixing them. I want to replace them completely - is that possible (with either threads or processes)? Some loss of functionality isn't a problem, as the code only seems to use the most basic features of Greenlets. -- http://mail.python.org/mailman/listinfo/python-list
Re: mutiprocessing, manager, list threading ?
On 12/28/2010 1:38 AM, mika.sa...@wipsl.com wrote: Hi, Testing if I could be able to use multiprocessing BaseManager to manage list of instance pointers between processes. If my intance inherits Thread, I get pickling error about _thread.lock. The multiprocessing module works by running completely separate programs which communicate by copying data back and forth through pipes or sockets. You can't share thread locks. (There's a gimmick that lets you put an array of fixed type and size in shared memory, but that's very limited, because Python's locking doesn't really understand multiprocessing.) If you need to access a list from several processes, have one process own the list, and use a Manager from the multiprocessing module to create a proxy to access the list from the other processes. Note that this is slower than regular list access. But if you just need to have a to-do list that feeds multiple processes, that's a way to do it. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: Replacing Greenlets with Threads or Processes
On 12/28/2010 8:07 AM Nathanael Abbotts said... That thread seems to deal with mixing them. I want to replace them completely - is that possible (with either threads or processes)? Are you working with pycsp? the info at http://code.google.com/p/pycsp/wiki/Getting_Started_With_PyCSP says: The API is implemented in four versions: Threads, processes, greenlets and net. All implementations share an almost identical API making it trivial to switch from one implementation to another. Emile -- http://mail.python.org/mailman/listinfo/python-list
Re: How to programmatically exit from wsgi's serve_forever() loop
Hi Ian, You are correct - I missed the following 2 nuances: # need to set poll_interval in order to recognize shutdown request httpd.serve_forever(poll_interval=0.5) # shutdown request must be initiated from ANOTHER thread or will block import threading threading.Thread(target=httpd.shutdown).start() Thank you for your help - really appreciated! Malcolm -- http://mail.python.org/mailman/listinfo/python-list
Re: Digitally Signing a XML Document (using SHA1+RSA or SHA1+DSA)
Dear all, I am required to use the Private Key from that XML below to generate a digital signature. The public key can then be used to validate the generated signature. http://stuvel.eu/rsa does not support PKCS#1 and hence I am required to look for alternates. Please let me know if there is something else out there that could help meet my requirement. Regards, Anurag On Tue, Dec 28, 2010 at 6:36 AM, Adam Tauno Williams awill...@whitemice.org wrote: On Tue, 2010-12-28 at 03:25 +0530, Anurag Chourasia wrote: Hi All, I have a requirement to digitally sign a XML Document using SHA1+RSA or SHA1+DSA Could someone give me a lead on a library that I can use to fulfill this requirement? http://stuvel.eu/rsa Never used it though. The XML Document has values such as RSASK-BEGIN RSA PRIVATE KEY- MIIBOgIBAAJBANWzHfF5Bppe4JKlfZDqFUpNLrwNQqguw76g/jmeO6f4i31rDLVQ n7sYilu65C8vN+qnEGnPB824t/A3yfMu1G0CAQMCQQCOd2lLpgRm6esMblO18WOG 3h8oCNcaydfUa1QmaX0apHlDFnI7UDXpYaHp2VL9gvtSJT5L3ZASMzxRPXJSvzcT AiEA/16jQh18BAD4q3yk1gKw19I8OuJOYAxFYX9noCEFWUMCIQDWOiYfPtxK3A1s AFARsDnnHTL4FbRPpiZ79vP+VgqojwIhAKo/F4Fo/VgApceobeQByzqMKCdBiZVd g5ZU78AWA5DXAiEAjtFuv389hz1eSAA1YSAmmhN3UA54NRlu/U9NVDlccF8CIBkc Z52oGxy/skwVwI5TBcB1YqXJTT47/6/hTAVMTwaA -END RSA PRIVATE KEY-/RSASK RSAPUBK-BEGIN PUBLIC KEY- MFowDQYJKoZIhvcNAQEBBQADSQAwRgJBANWzHfF5Bppe4JKlfZDqFUpNLrwNQqgu w76g/jmeO6f4i31rDLVQn7sYilu65C8vN+qnEGnPB824t/A3yfMu1G0CAQM= -END PUBLIC KEY-/RSAPUBK Is this any kind of standard or just something someone made up? Is there a namespace for the document? It seems quite odd that the document contains a *private* key. If all you need to do is parse to document to retrieve the values that seems straight-forward enough. And the XML also has another node that has a Public Key with Modules and Exponents etc that I apparently need to utilize. RSAPK M1bMd8XkGml7gkqV9kOoVSk0uvA1CqC7DvqD +OZ47p/iLfWsMtVCfuxiKW7rkLy836qcQac8Hzbi38DfJ8y7UbQ==/M EAw==/E /RSAPK I am a little thin on this concept and expecting if you could guide me to a library/documentation that I could utilize. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
On 12/27/2010 3:05 AM, Ulrich Eckhardt wrote: Hi! I'm trying to solve a computational problem and of course speed and size is important there. Then you probably shouldn't be using CPython. Apart from picking the right algorithm, I came across an idea that could help speed up things and keep memory requirements down. What I have is regions described by min and max coordinates. At first, I just modeled these as a simple class containing two values for each axis. There are more effective techniques for that. In game physics collision detection systems, it's common to use axis-ordered lists of bounding boxes to partition objects. This still works even when the ranges overlap. Look up I-Collide for a classic implementation. Am I looking in the wrong direction? Is there some better approach? Please don't tell me to use C, as I'm specifically interested in learning Python, I'm pretty sure I could have solved the problem quickly in C++ otherwise. CPython is a naive interpreter which does dictionary lookups for every variable and attribute access. If you're doing fast manipulation of linked data structures in CPython, performance is going to suck. Check out Shed Skin 0.7, which is a much faster Python system. It's limited, but for the kind of data structure work you're doing, all the features you should need already work. John Nagle In a second step, I derived this class from tuple instead of object. Some code then moved from __init__ to __new__ and some code that modified these objects had to be changed to replace them instead. The upside to this is that they can be used as keys in sets and dicts, which isn't the case for mutable types[1]. What I'm now considering is to only allow a single instance of these objects for each set of values, similar to interned strings. What I would gain is that I could safely compare objects for identity instead of equality. What I'm not yet sure is how much overhead that would give me and/or how to keep it low. The idea is to store each instance in a set and after creating a new object I would first look up an equal object in the global set and return that instead, otherwise add the new one. The problem I foresee is that if I define equality as identity, this lookup when creating will never eliminate duplicates. If I only fall back to equality comparison for non-identical objects, I would probably sacrifice most of the gain. If I build a dict mapping between the values and the actual objects, I would have doubled the required memory and uselessly store the same values twice there. Cheers! Uli [1] Somebody correct me if I'm wrong, but I believe I could have defined a hashing function for the type and thus allowed its use in a set or dict, right? However, goofing up because you accidentally modified an object and changed its hash value is something I don't want to risk anyway. -- http://mail.python.org/mailman/listinfo/python-list
Re: O'Reilly Python Certification
On 2010-12-16, Steve Holden st...@holdenweb.com wrote: Each lesson required you to complete a practical assignment. You submit these assignments for evaluation, and do not proceed to the next lesson until your assignment reaches a satisfactory standard. Thus, less experienced students will tend to have more interaction with their tutors. A class will typically have between twelve and sixteen lessons. There are also quizzes and a final practical project. regards Steve I have a general question. Does it seem odd that a certificate in Python, an Open Source language; taught at O'Reilly, which offers an Open Source Programming Certificate and is something like waist-deep in Open Source publishing; is offered to the world at large but only (IIUC) if one runs some version of Windows by MS? Based on what I am given to understand from my correspondence with OST, it seems that I *must* install an instance of Windows to take the certificate's courses. Not that I particularly want to bash MS, but I am running FreeBSD, and have Python 2.x and 3.x installed; I can call either IDE; and I am competent at the shell, I think sufficiently, to manage coding at the shell. Is it normal for people in CS courses at the University and/or certificate level to learn a given language under Windows? Or is it just me who thinks it odd that an OS like FreeBSD won't (apparently, I stress) work with the O'Reilly Sandbox? -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
Christian Heimes li...@cheimes.de writes:
Also this code is going to use much more memory than an ordinary tuple
since every instance of InternedTuple has a __dict__ attribute. This
code works but I had to move the cache outside the class because of
__slots__.
Wouldn't it work inside the class as well? __slots__ applies to
instances, not to classes themselves. In Python 3.1:
class Foo(tuple):
... __slots__ = ()
... _cache = {}
...
Foo._cache# works as expected
{}
Foo()._cache # and so does this
{}
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Re: round in 2.6 and 2.7
Float-to-string and string-to-float conversions are correctly rounded. The round() function is also now correctly rounded. Not sure that this is correct English; I think it means that the round() function is now correct. Well, the correct result of the example the OP gave would be 9.9 exactly. But since 9.9 isn't exactly representable as a Python float, we necessarily get an approximation. The language above is intended to convey that it's the 'correctly rounded' approximation I see. Shouldn't it say then The round() function gives/produces/returns correctly rounded results now, instead of saying that the round function *is* correctly rounded? ISTM that the round function cannot be rounded (correctly or not): py round(round) Traceback (most recent call last): File stdin, line 1, in module TypeError: a float is required But then, I'm not a native speaker (of English). Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Keeping track of the N largest values
I'm processing a stream of N numbers and want to keep track of the K largest. There's too many numbers in the stream (i.e. N is too large) to keep in memory at once. K is small (100 would be typical). ... deque can be bounded by maxsize, might fit the bill: from collections import deque d = deque([], 3) for i in range(10): d.append(i) d deque([7, 8, 9], maxlen=3) HTH, -- Miki -- http://mail.python.org/mailman/listinfo/python-list
Re: Language Detection Library/Code
On Tue, Dec 28, 2010 at 12:42 AM, Shashwat Anand anand.shash...@gmail.com wrote: Regarding dictionary lookup+n-gram approach I didn't quite understand what you wanted to say. Run through trigram analysis first, if it identified multiple languages as being matches within the error margin then split the text into words, and look up each word in the respective dictionaries to get a second opinion. Katie -- CoderStack http://www.coderstack.co.uk/python-jobs The Software Developer Job Board -- http://mail.python.org/mailman/listinfo/python-list
Re: Replacing Greenlets with Threads or Processes
On Tuesday, December 28, 2010 5:04:48 PM UTC, Emile van Sebille wrote: On 12/28/2010 8:07 AM Nathanael Abbotts said... That thread seems to deal with mixing them. I want to replace them completely - is that possible (with either threads or processes)? Are you working with pycsp? the info at http://code.google.com/p/pycsp/wiki/Getting_Started_With_PyCSP says: The API is implemented in four versions: Threads, processes, greenlets and net. All implementations share an almost identical API making it trivial to switch from one implementation to another. Emile Unfortunately not. I wish I was! That sounds brilliant. -- http://mail.python.org/mailman/listinfo/python-list
Re: round in 2.6 and 2.7
On 12/28/2010 4:47 PM, Martin v. Loewis wrote: Float-to-string and string-to-float conversions are correctly rounded. The round() function is also now correctly rounded. The second line was written to be parallel to the first, but the first is slightly ambiguous in that 'conversions' can refer to either process (not rounded, correctly or otherwise ;-) or result. However the parallelism does not does as 'round() function' is the instrument of the process and definitly not the result. ... I see. Shouldn't it say then The round() function gives/produces/returns correctly rounded results now, instead of saying that the round function *is* correctly rounded? ISTM that the round function cannot be rounded (correctly or not): In 2.7 Float-to-string and string-to-float conversion results are correctly rounded, as are the results of the round() function. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Interning own classes like strings for speed and size?
Am 28.12.2010 21:16, schrieb Hrvoje Niksic:
Christian Heimes li...@cheimes.de writes:
Also this code is going to use much more memory than an ordinary tuple
since every instance of InternedTuple has a __dict__ attribute. This
code works but I had to move the cache outside the class because of
__slots__.
Wouldn't it work inside the class as well? __slots__ applies to
instances, not to classes themselves. In Python 3.1:
You are right as long as you don't try to rebind the variable. I
recalled that class attributes of classes with __slots__ behave slightly
different than ordinary classes. For example you can't have a writeable
slot and class default values at the same time.
class Example2(object):
... __slots__ = ()
... _cache = {}
...
Example2()._cache
{}
Example2()._cache = {}
Traceback (most recent call last):
File stdin, line 1, in module
AttributeError: 'Example2' object attribute '_cache' is read-only
Christian
--
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Re: Interning own classes like strings for speed and size?
On Wed, Dec 29, 2010 at 00:45, Christian Heimes li...@cheimes.de wrote:
Am 28.12.2010 21:16, schrieb Hrvoje Niksic:
Christian Heimes li...@cheimes.de writes:
Also this code is going to use much more memory than an ordinary tuple
since every instance of InternedTuple has a __dict__ attribute. This
code works but I had to move the cache outside the class because of
__slots__.
Wouldn't it work inside the class as well? __slots__ applies to
instances, not to classes themselves. In Python 3.1:
You are right as long as you don't try to rebind the variable. I
recalled that class attributes of classes with __slots__ behave slightly
different than ordinary classes. For example you can't have a writeable
slot and class default values at the same time.
class Example2(object):
... __slots__ = ()
... _cache = {}
...
Example2()._cache
{}
Example2()._cache = {}
Traceback (most recent call last):
File stdin, line 1, in module
AttributeError: 'Example2' object attribute '_cache' is read-only
Forgive me if I'm misunderstanding, but if you want to cache instances
of a class, surely
Example2()._cache = {}
would defeat the purpose, at least for that instance of Example2? The
slot seems writeable enough, after all
Example2()._cache['foo'] = 'bar'
seems to work?
--
Rami Chowdhury
Never assume malice when stupidity will suffice. -- Hanlon's Razor
+44-7581-430-517 / +1-408-597-7068 / +88-0189-245544
--
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Re: Dynamic list name from a string
# dynamic_named_obj.py
# comp.lang.python
# 2010-12 Dec-28
# Topic: Dynamic list name from a string Options
# attempts to answer OP's question
# DevPlayer - not a solution I'd use
# TO Original Poster OP:
# Start from the bottom OPTION, the one you requested.
# Work your way up and see how it gets simpler and
# simpler to do what you want. Dynamically named
# references start to look pointless.
# I hope I addressed your question and hopefully shown
# you the right direction and right reasons to avoid
# using dynamically made named references.
# But I could be wrong in your case.
import time
class DataStore(object):
A namespace similar to a module global scope.
#def concatenate( one, two):
#Function to concatonate two lists.
#return list( one + two)
# =
class Animal(object):
A base class for no real reason.
def __init__(self, name):
self.name = name
self.date = time.clock()
# -
class Bear(Animal):
def __init__(self, name):
super(Bear, self).__init__(name)
class BearCub(Bear):
def __init__(self, name):
super(BearCub, self).__init__(name)
# -
class Doe(Animal):
def __init__(self, name):
super(Doe, self).__init__(name)
class Fawn(Doe):
def __init__(self, name):
super(Fawn, self).__init__(name)
# An alternate namespace instead of module global
ns = DataStore()
OPTION = BETTER YET
if OPTION == BETTER YET:
# don't name your lists, just make the global_list and use it
# no intermediary lists needed really.
ns.Animals = [
# -- 1st set of classes
Bear(bob),
Bear(bill),
BearCub(obo),
BearCub(Bill jr.),
# -- 2nd set of classes
Doe(DoeADear),
Doe(AFemaleDear),
Fawn(Ray),
Fawn(Adropof),
]
for animal in ns.Animals:
kind = animal.__class__.__name__
name = animal.name
date = animal.date
print kind, name, date
# make a sorted, by date, list of bears
old_bears = [obj for obj in ns.Animals if type(obj) is Bear]
old_bears.sort(None, key=lambda animal: animal.date)
ns.bears = old_bears
# or sort all animals by date
animals = [obj for obj in ns.Animals]
animals.sort(None, key=lambda animal: animal.date)
# then get just bears
bears = [obj for obj in animals if type(obj) is Bear]
elif OPTION == BETTER:
# don't name your lists, trust in checking if objects have
attributes
# that matter
ns.Animals = {
# -- 1st set of classes
bob: Bear(bob),
Bill: Bear(bill),
obo: BearCub(obo),
Bill jr.: BearCub(Bill jr.),
# -- 2nd set of classes
DoeADear: Doe(DoeADear),
AFemaleDear: Doe(AFemaleDear),
Ray: Fawn(Ray),
Adropof: Fawn(Adropof),
}
print ns.Animals['bob'].date
# make a sorted list of objects based on an attribute -like date
# sort by date for just bears
# http://wiki.python.org/moin/HowTo/Sorting
# look at Operator Module Functions too
# make a sorted, by date, list of bears
old_bears = [obj for obj in ns.Animals.values() if type(obj) is
Bear]
old_bears.sort(None, key=lambda animal: animal.date)
ns.bears = old_bears
# or sort all animals by date
animals = [obj for obj in ns.Animals.values()]
animals.sort(None, key=lambda animal: animal.date)
# then get just bears
bears = [obj for obj in animals if type(obj) is Bear]
elif OPTION == SOSO1:
# alternative to dynamically named references (object attributes)
# Each item in global_dict is a sub dict
ns.Animals = {}
# -- 1st set of classes
ns.Animals[ Bear ] = {bob: Bear(bob), Bill: Bear(Bill)}
ns.Animals[ BearCub ] = {obo: BearCub(obo), Bill jr.:
Bearcub(Bill jr.)}
# -- 2nd set of classes
ns.Animals[ Doe ] = {DoeADear: Doe(DoeADear), AFemaleDear:
Doe(AFemaleDear)}
ns.Animals[ Fawn ] = {Ray: Fawn(Ray), Adropof:
Fawn(Adropof)}
print ns.Animals[Bear][bob].date
print ns.Animals[BearCub][Bill jr.].date
elif OPTION == SOSO2:
# alternative to dynamically named references (object attributes)
# don't use names at all -
# Each item in a dict is a list of objects
# use class itself as key (not class name)
ns.Animals = {}
# -- 1st set of classes
ns.Animals[ Bear ] = [Bear(bob), Bear(Bill)]
ns.Animals[ BearCub ] = [BearCub(obo), Bearcub(Bill jr.)]
# -- 2nd set of classes
ns.Animals[ Doe ] = [Doe(DoeADear), Doe(AFemaleDear)]
ns.Animals[ Fawn ] = [Fawn(Ray), Fawn(Adropof)]
print ns.Animals[Bear][0].date
elif OPTION == SOSO3:
# alternative to dynamically named references (object attributes)
# use class __name__ as key
ns.Animals = {}
# -- 1st set of classes
ns.Animals[ Bear.__name__ ] = [Bear(bob), Bear(Bill)]
ns.Animals[ BearCub.__name__ ] =
[issue10783] struct.pack() and Unicode strings
Raymond Hettinger rhettin...@users.sourceforge.net added the comment: At this point a feature change seems unlikely, Amaury, it is not too late to fix anything that's broken. New features are out, but we are free to fix anything hosed this badly. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
Amaury Forgeot d'Arc amaur...@gmail.com added the comment:
But there are probably working usages with unicode strings out there. For
example, I've seen code like struct.pack('6sHHBBB', 'GIF87a', ...)
Do you suggest to make this 3.1 code stop working in 3.2?
In any case, the 'c' format should probably be changed as well.
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[issue10783] struct.pack() and Unicode strings
STINNER Victor victor.stin...@haypocalc.com added the comment:
Amaury At this point a feature change seems unlikely,
Amaury but it's not too late to emit a DeprecationWarning.
I prefer to break the API today than having to maintain a broken API for
10 or 20 years :-) And we have a very small user base using Python 3,
it's easier to change it now, than in the next release.
Amaury But there are probably working usages with unicode strings out
Amaury there. For example, I've seen code like
Amaury struct.pack('6sHHBBB','GIF87a', ...)
Amaury Do you suggest to make this 3.1 code stop working in 3.2?
Yes. As I wrote in my previous message, this can be changed to
struct.pack('6sHHBBB', b'GIF87a', ...), which works on 3.1 and 3.2
(patched).
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[issue10773] Building C and C++ Extensions on Windows documentation shows 2.x way of initializing module
Georg Brandl ge...@python.org added the comment: Thanks, fixed in r87524. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10773 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1823] Possible to set invalid Content-Transfer-Encoding on email.mime.multipart.MIMEMultipart
Georg Brandl ge...@python.org added the comment: Fine with me to fix this API during beta. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1823 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10738] webbrowser.py bug with Opera on Linux
Georg Brandl ge...@python.org added the comment: By all means. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10738 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10766] optparse uses %s in gettext calls
Georg Brandl ge...@python.org added the comment: Hmm, argparse is new, so that is a different story. Not so sure about optparse, so I would not put this into 3.2. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10766 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9824] SimpleCookie should escape commas and semi-colons
Georg Brandl ge...@python.org added the comment: Looks good. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9824 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10679] make altinstall may clobber OS provided scripts
Georg Brandl ge...@python.org added the comment: Committed in r87525. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10679 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2775] Implement PEP 3108
Georg Brandl ge...@python.org added the comment: Alas, too late for 3.2 now. -- versions: +Python 3.3 -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2775 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10784] os.getpriority() and os.setpriority()
Georg Brandl ge...@python.org added the comment: Looks good. Would there be a point in making any of the parameters optional? -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10784 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
Georg Brandl ge...@python.org added the comment: I agree this automatic conversion is broken and should be fixed. Not sure if emitting a DeprecationWarning now and fixing it 18 months later is the right thing, especially since DeprecationWarnings are now silent. As Victor says, the incompatibility is explicit, and the fix is simple and fully backwards compatible, while the current behavior will cause nasty intermittent surprises. -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10784] os.getpriority() and os.setpriority()
Martin v. Löwis mar...@v.loewis.de added the comment: Looks good. Would there be a point in making any of the parameters optional? No. The API should look exactly as it does on the system level. Anybody calling these functions should know how call them. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10784 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10777] xml.etree.register_namespace dictionary changed size during iteration
Georg Brandl ge...@python.org added the comment: Thanks, this should be fixed in r87526. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10777 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10768] Bug in scrolledtext
Georg Brandl ge...@python.org added the comment: Fixed in r87527. Terry, the reason why calling example() interactively failed is the strange way __doc__ is imported -- it is None in your case and that causes the Tkinter type error. I fixed this as well. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10768 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10767] Lib/test/crashers/README is out of date
Georg Brandl ge...@python.org added the comment: Fixed in r87530. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10767 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10742] memoryview.readonly attribute is not documented
Georg Brandl ge...@python.org added the comment: Added in r87531. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10742 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10781] minidom Node.writexml method doesn't manage encoding parameter correctly
Georg Brandl ge...@python.org added the comment: Fixed in r87532. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10781 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10708] Misc/porting should be folded in to the development FAQ
Georg Brandl ge...@python.org added the comment: Same for Misc/SpecialBuilds. -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10708 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6785] IncompleteRead / BadStatus when parsing http://peakoil.mobi
Changes by Georg Brandl ge...@python.org: -- status: pending - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6785 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10739] Subprocess behavior on Windows
Georg Brandl ge...@python.org added the comment: I agree that this belongs in the makefile docs. Fixed in r87535. -- nosy: +georg.brandl resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10739 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10670] Provide search scope limits
Changes by Georg Brandl ge...@python.org: -- Removed message: http://bugs.python.org/msg123928 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10670 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10609] dbm documentation example doesn't work (iteritems())
Georg Brandl ge...@python.org added the comment: Fixed in r87536. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10609 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
Amaury Forgeot d'Arc amaur...@gmail.com added the comment:
Since the Release Manager agrees with the change, I withdraw my objection.
I have three remarks to the patch:
- Some examples in the documentation should be fixed:
http://docs.python.org/dev/py3k/library/struct.html#examples
pack('ci', '*', 0x12131415)
will now raise an exception.
- the message argument for 's' must be a bytes looks a bit weird. a bytes
object seems better.
- the 'p' format (Pascal String) should be changed as well. This is the last
call to _PyUnicode_AsDefaultEncodedString() in this file...
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[issue6210] Exception Chaining missing method for suppressing context
Antoine Pitrou pit...@free.fr added the comment: I'm not sure how that's going to help as I don't want my library code to be responsible for printing out exceptions, I just want them to print reasonably -- and it seems very unreasonable to have the exception I'm converting /from/ show up in the traceback. I don't know if it's unreasonable. In some cases it can definitely help. Besides, if you are writing library code (as opposed to application code), you shouldn't care at all how tracebacks are displayed, should you? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6210 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
David Beazley d...@dabeaz.com added the comment: As a user of Python 3, I would like echo Victor's comment about fixing the API right now as opposed to having to deal with it later. I can only speak for myself, but I would guess that anyone using Python 3 already understands that it's bleeding edge and that the bytes/strings distinction is really important. If fixing this breaks some third party libraries, I say good--they shouldn't have been blindly passing Unicode into struct in the first place. Better to deal with it now when the number of users is relatively small. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
STINNER Victor victor.stin...@haypocalc.com added the comment: Fixed by r87537. Thanks Amaury for your review! I also removed some ugly (implicit) conversions from test_struct. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
Georg Brandl ge...@python.org added the comment: Thanks, Victor! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10783] struct.pack() and Unicode strings
David Beazley d...@dabeaz.com added the comment: Thanks everyone for looking at this! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10783 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10348] multiprocessing: use SysV semaphores on FreeBSD
STINNER Victor victor.stin...@haypocalc.com added the comment: Informations about SysV semaphores: - functions: semget(), semop(), semctl(), ftok() - http://perldoc.perl.org/IPC/SysV.html - http://beej.us/guide/bgipc/output/html/multipage/semaphores.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10348 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10348] multiprocessing: use SysV semaphores on FreeBSD
STINNER Victor victor.stin...@haypocalc.com added the comment: Examples of programs using SysV semaphores: http://firebird.cvs.sourceforge.net/viewvc/firebird/firebird2/src/jrd/isc_sync.cpp?revision=HEADview=markup (Firebird, search #ifdef USE_SYS5SEMAPHORE sections) https://github.com/mono/mono/blob/master/mono/io-layer/shared.c#L501 (Mono) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10348 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9333] Expose a way to enable os.symlink on Windows
Brian Curtin cur...@acm.org added the comment: Thanks for having a look. Checked in with the suggested changes to r87539. -- resolution: - fixed stage: commit review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9333 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10759] HTMLParser.unescape() fails on HTML entities with incorrect syntax (e.g. #hearts; )
Senthil Kumaran orsent...@gmail.com added the comment: Fixed this in r87542 in (py3k). unescape is undocumented helper method, so no docs are added. There was already an issue ( Issue6662) on malformed charref handling and it is fixed. -- resolution: - fixed stage: patch review - committed/rejected ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10759 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10759] HTMLParser.unescape() fails on HTML entities with incorrect syntax (e.g. #hearts; )
Senthil Kumaran orsent...@gmail.com added the comment: r87544 (release27-maint) and r87545 (release31-maint). -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10759 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10254] unicodedata.normalize('NFC', s) regression
Alexander Belopolsky belopol...@users.sourceforge.net added the comment: Committed backports: r87540 (3.1) r87541 (2.7) r87546 (2.6) -- resolution: - fixed stage: commit review - committed/rejected status: open - closed versions: +Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10254 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10786] unittest.TextTextRunner does not respect redirected stderr
Changes by R. David Murray rdmur...@bitdance.com: -- keywords: +easy nosy: +michael.foord versions: +Python 2.7, Python 3.1, Python 3.2 -Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10786 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10786] unittest.TextTextRunner does not respect redirected stderr
Michael Foord mich...@voidspace.org.uk added the comment: TextTestRunner is initialised with a stream to output messages on that defaults to sys.stderr. The correct way to redirect messages is to construct it with a different stream. If you want a redirectable stream then construct the runner with a stream that delegates operations to a 'backend stream' but allows you to redirect it. Fixing TextTestRunner to dynamically lookup up sys.stderr would not be compatible with systems that redirect sys.stderr but *don't* expect this to prevent test run information from being output. I suggest closing as wontfix. -- assignee: - michael.foord ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10786 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10786] unittest.TextTextRunner does not respect redirected stderr
Michael Foord mich...@voidspace.org.uk added the comment: Actually I can't see a good reason why not to just lookup the *current* sys.stderr at instantiation time instead of binding at import time as is the current behaviour. Patch with tests will make it more likely that this change goes in sooner rather than later. -- stage: - needs patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10786 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10787] [random.gammavariate] Add the expression of the distribution in a comprehensive form for random.gammavariate
New submission from David Kremer david.kremer...@gmail.com: Could you please add the exact form of the distribution, because it's rather confusing in the current form. In this url, the role of k and theta is precised with a formula : [http://tinyurl.com/24jxfrk]* It seems that in [http://docs.python.org/library/random.html#random.gammavariate] , alpha is playing the role of k and beta is playing the role of theta. But it's still not clear, because one can confuse beta with 1/beta and vice et versa, like there is two usual representation for the gamma distribution [http://en.wikipedia.org/wiki/Gamma_distribution] [http://docs.scipy.org/doc/numpy-1.5.x/reference/generated/numpy.random.gamma.html#numpy.random.gamma]* Please update the documentation to avoid this ambiguity. I provide an indicative patch which is updating the doc string in random.py -- assignee: d...@python components: Documentation files: patch_documentation_random.py.diff keywords: patch messages: 124803 nosy: David.Kremer, d...@python priority: normal severity: normal status: open title: [random.gammavariate] Add the expression of the distribution in a comprehensive form for random.gammavariate versions: Python 2.7 Added file: http://bugs.python.org/file20181/patch_documentation_random.py.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10787 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9333] Expose a way to enable os.symlink on Windows
Brian Curtin cur...@acm.org added the comment: Checked in a small doc update in r87547. Removes the part about os.symlink not being available, and mentions the OSError. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9333 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6027] test_xmlrpc_net fails when the ISP returns 302 Found
Antoine Pitrou pit...@free.fr added the comment: +1 on simply removing this test. *.xmlrpc.com look(s) totally unmaintained. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6027 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1772833] -q (quiet) option for python interpreter
Éric Araujo mer...@netwok.org added the comment: Is it on purpose that no sys.flags attribute has been added for quiet? -- nosy: +eric.araujo versions: +Python 3.2 -Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1772833 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10764] sysconfig and alternative implementations
Éric Araujo mer...@netwok.org added the comment: I suggest this bug is superseded by #9878. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10764 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10788] test_logging failure
New submission from Antoine Pitrou pit...@free.fr: This on the Windows Server 2008 buildbot: (http://www.python.org/dev/buildbot/all/builders/AMD64%20Windows%20Server%202008%203.x) Re-running test 'test_logging' in verbose mode test_flat (test.test_logging.BuiltinLevelsTest) ... FAIL test_nested_explicit (test.test_logging.BuiltinLevelsTest) ... FAIL test_nested_inherited (test.test_logging.BuiltinLevelsTest) ... FAIL test_nested_with_virtual_parent (test.test_logging.BuiltinLevelsTest) ... FAIL test_callable_filter (test.test_logging.BasicFilterTest) ... FAIL test_filter (test.test_logging.BasicFilterTest) ... FAIL test_handler_filter (test.test_logging.CustomLevelsAndFiltersTest) ... FAIL test_logger_filter (test.test_logging.CustomLevelsAndFiltersTest) ... FAIL test_specific_filters (test.test_logging.CustomLevelsAndFiltersTest) ... FAIL test_flush (test.test_logging.MemoryHandlerTest) ... FAIL test_config0_ok (test.test_logging.ConfigFileTest) ... FAIL test_config1_ok (test.test_logging.ConfigFileTest) ... FAIL test_config2_failure (test.test_logging.ConfigFileTest) ... FAIL test_config3_failure (test.test_logging.ConfigFileTest) ... FAIL test_config4_ok (test.test_logging.ConfigFileTest) ... FAIL test_config5_ok (test.test_logging.ConfigFileTest) ... FAIL test_config6_ok (test.test_logging.ConfigFileTest) ... FAIL test_output (test.test_logging.SocketHandlerTest) ... FAIL test_persistent_loggers (test.test_logging.MemoryTest) ... FAIL test_encoding_cyrillic_unicode (test.test_logging.EncodingTest) ... FAIL test_encoding_plain_file (test.test_logging.EncodingTest) ... FAIL test_warnings (test.test_logging.WarningsTest) ... FAIL test_config0_ok (test.test_logging.ConfigDictTest) ... FAIL test_config11_ok (test.test_logging.ConfigDictTest) ... FAIL test_config12_failure (test.test_logging.ConfigDictTest) ... FAIL test_config13_failure (test.test_logging.ConfigDictTest) ... FAIL test_config1_ok (test.test_logging.ConfigDictTest) ... FAIL test_config2_failure (test.test_logging.ConfigDictTest) ... FAIL test_config2a_failure (test.test_logging.ConfigDictTest) ... FAIL test_config2b_failure (test.test_logging.ConfigDictTest) ... FAIL test_config3_failure (test.test_logging.ConfigDictTest) ... FAIL test_config4_ok (test.test_logging.ConfigDictTest) ... FAIL test_config4a_ok (test.test_logging.ConfigDictTest) ... FAIL test_config5_ok (test.test_logging.ConfigDictTest) ... FAIL test_config6_failure (test.test_logging.ConfigDictTest) ... FAIL test_config7_ok (test.test_logging.ConfigDictTest) ... FAIL test_config_10_ok (test.test_logging.ConfigDictTest) ... FAIL test_config_8_ok (test.test_logging.ConfigDictTest) ... FAIL test_config_9_ok (test.test_logging.ConfigDictTest) ... FAIL test_listen_config_10_ok (test.test_logging.ConfigDictTest) ... FAIL test_listen_config_1_ok (test.test_logging.ConfigDictTest) ... FAIL test_manager_loggerclass (test.test_logging.ManagerTest) ... FAIL test_braces (test.test_logging.FormatterTest) ... ok test_dollars (test.test_logging.FormatterTest) ... ok test_percent (test.test_logging.FormatterTest) ... ok test_logrecord_class (test.test_logging.LogRecordFactoryTest) ... FAIL test_child_loggers (test.test_logging.ChildLoggerTest) ... FAIL test_queue_handler (test.test_logging.QueueHandlerTest) ... FAIL test_file_created (test.test_logging.RotatingFileHandlerTest) ... FAIL test_rollover_filenames (test.test_logging.RotatingFileHandlerTest) ... FAIL test_should_not_rollover (test.test_logging.RotatingFileHandlerTest) ... FAIL test_should_rollover (test.test_logging.RotatingFileHandlerTest) ... FAIL test_last_resort (test.test_logging.LastResortTest) ... FAIL == FAIL: test_flat (test.test_logging.BuiltinLevelsTest) -- Traceback (most recent call last): File c:\buildslave-py3k\3.x.curtin-win2008-amd64\build\lib\test\test_logging.py, line 93, in setUp self.assertFalse(self.logger1.hasHandlers()) AssertionError: True is not false == FAIL: test_nested_explicit (test.test_logging.BuiltinLevelsTest) -- Traceback (most recent call last): File c:\buildslave-py3k\3.x.curtin-win2008-amd64\build\lib\test\test_logging.py, line 93, in setUp self.assertFalse(self.logger1.hasHandlers()) AssertionError: True is not false == FAIL: test_nested_inherited (test.test_logging.BuiltinLevelsTest) -- Traceback (most recent call last): File c:\buildslave-py3k\3.x.curtin-win2008-amd64\build\lib\test\test_logging.py, line 93, in setUp self.assertFalse(self.logger1.hasHandlers()) AssertionError: True is not false
[issue10774] test_logging leaves temp files
Éric Araujo mer...@netwok.org added the comment: Great, thanks! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10774 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10787] [random.gammavariate] Add the expression of the distribution in a comprehensive form for random.gammavariate
Changes by Éric Araujo mer...@netwok.org: -- nosy: +rhettinger ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10787 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10764] sysconfig and alternative implementations
Amaury Forgeot d'Arc amaur...@gmail.com added the comment: Indeed -- resolution: - duplicate status: open - closed superseder: - Avoid parsing pyconfig.h and Makefile by autogenerating extension module ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10764 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10764] sysconfig and alternative implementations
Michael Foord mich...@voidspace.org.uk added the comment: No, issue 9878 can't be implemented for Python 2.7 whereas the issues other implementations have with sysconfig *could* still be resolved in 2.7 as a bugfix. (Specifically for IronPython on Mac OS X it would mean not assuming that being on a posix platform means there is a Makefile.) -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10764 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1772833] -q (quiet) option for python interpreter
Georg Brandl ge...@python.org added the comment: No, pure ignorance -- should be fixed in r87549. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1772833 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6027] test_xmlrpc_net fails when the ISP returns 302 Found
R. David Murray rdmur...@bitdance.com added the comment: See also issue 6533. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6027 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9824] SimpleCookie should escape commas and semi-colons
R. David Murray rdmur...@bitdance.com added the comment: Committed to py3k in r87550. Since the only application that would trip up would be one not using SimpleCookie to read SimpleCookie generated cookies *and* that doesn't implement unescaping (in which case it wasn't really handling SimpleCookie cookies, was it?), I went ahead and backported it to 3.1 in r87551 and 2.7 in r87552. -- resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9824 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10738] webbrowser.py bug with Opera on Linux
Terry J. Reedy tjre...@udel.edu added the comment: 3.2,3.1,2.7: r87553, r87554, r87555 -- assignee: - terry.reedy components: +Library (Lib) resolution: - fixed status: open - closed type: - behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10738 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2636] Regexp 2.7 (modifications to current re 2.2.2)
Matthew Barnett pyt...@mrabarnett.plus.com added the comment: issue2636-20101228a.zip is a new version of the regex module. It now compiles the pattern quickly. -- Added file: http://bugs.python.org/file20182/issue2636-20101228a.zip ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2636 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
