Python deployment options.
Hi to all folks here, i just bought a book and started reading about this language. I want to ask what options do we have to deploy a python program to users that do not have the labguage installed ?? I mean, can i make an executable file, or something that contains the runtime and the modules that the program only use or am i forced to download the language to the user machine so the .py files can be run ?? Thanks in advance, king kikapu -- http://mail.python.org/mailman/listinfo/python-list
Re: Python deployment options.
I see...So, if these are the only options, the only "safe" bet is to install the language on the machine (beeing Win, Linux or Mac) and execute the .py files, right ?? On Nov 8, 1:24 pm, "Chris_147" <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > Hi to all folks here, > > > i just bought a book and started reading about this language. > > I want to ask what options do we have to deploy a python program to > > users that do not have the labguage installed ?? > > > I mean, can i make an executable file, or something that contains the > > runtime and the modules that the program only use or am i forced to > > download the language to the user machine so the .py files can be run > > ?? > > > Thanks in advance, > > > king kikapuWell, on Windows you have to look for the Py2Exe package > (www.py2exe.org) > On Mac OS X you can use Py2App > (http://undefined.org/python/py2app.html) > > Mind you, on Windows there is one big potentional problem: Python is > compiled with Visual Studio 2003 and needs msvcr71.dll. So Py2Exe > wants to distribute that dll also, but if you don't have a valid Visual > Studio license, you are not allowed to. > It is explained further in this > thread:http://groups.google.com/group/comp.lang.python/browse_frm/thread/bcc... > > I doubt Microsoft will unleash their lawyers on you, but it is a > problem. -- http://mail.python.org/mailman/listinfo/python-list
Python visual IDE
Hi to all, i am not sure if this question really belongs here but anyway, here it goes: I have seen a lot of IDEs for Python, a lot of good stuff but actually none of them has what, for example, Visual Studio has: a Visual Editor (with the ability to place controls on forms etc etc), or RAD I know that there is Glade but does anybody knows of some product, or an ongoing effort to this direction so i can have a look at ? Coming from Windows and vs.net world, i think the only missing point here is the integration of the Pyrthon with a RAD IDE... Thanks a lot and i apologize if this isn't the correct place for this question... Kikapu -- http://mail.python.org/mailman/listinfo/python-list
Re: Python visual IDE
hmmm,,,ok, i see your point.
As i understand it, as a newcomer, it is a little cumbersome to right
the code in one ide,
"glue" the UI from another toll and all that stuff.
I know it works but if someone is coming from VS.Net, it seems a little
strange, at first.
I also saw that the wxWidgets is the more "feel natural" in all
platforms so i
believe that if an IDE is able to offer RAD capabilities and build upon
this
widget, it will be an awesome tool for Python programmers,
matches this way VS and other win RAD IDEs...
Thanks a lot for your post, i'll have a look at the programs you
mention!
King Kikapu
On Nov 22, 2:09 pm, Bruno Desthuilliers <[EMAIL PROTECTED]> wrote:
> king kikapu wrote:
> > Hi to all,
>
> > i am not sure if this question really belongs here but anyway, here it
> > goes: I have seen a lot of IDEs for Python, a lot of good stuff but
> > actually none of them has what, for example, Visual Studio has: a
> > Visual Editor (with the ability to place controls on forms etc etc),
> > or RAD
>
> > I know that there is Glade but does anybody knows of some product, or
> > an ongoing effort to this direction so i can have a look at ?
>
> > Coming from Windows and vs.net world, i think the only missing point
> > here is the integration of the Pyrthon with a RAD IDE...
>
> > Thanks a lot and i apologize if this isn't the correct place for this
> > question...If you use wxWidgets, you may want to have a look at projects
> > like
> Boa-constructor or PythonCard. If you use QT/KDE, Eric3 offers good
> integration with QT Designer IIRC.
>
> Now as you can see, the problem with RAD tools is that they are specific
> to a given GUI toolkit. Python runs on a lot of platforms, and some of
> these platforms (ie Linux) are not tied to a specific GUI toolkit. So
> integrating the RAD tool in the IDE means you can't use this IDE with
> other GUI toolkits.
>
> Also, there's a tradition in the *n*x world about preferring small,
> highly specialized tools over huge monolithic do-it-all applications. As
> an example, I daily use half a dozen languages, and I wouldn't like to
> have to learn half a dozen IDEs. I'm much more productive with a good
> code editor, the command line, and a few external tools when needed.
>
> My 2 cents...
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in '[EMAIL PROTECTED]'.split('@')])"- Hide quoted text -- Show quoted text -
--
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Re: Python visual IDE
I have already downloaded and seen the trial of Komodo Professional. Indeed it has a simple Gui Builder but one can only use TKinter on it. No wxWidgets support and far from truly RAD, but it is the only "integrated" GUI builder in these IDEs... On Nov 22, 4:31 pm, "Steve" <[EMAIL PROTECTED]> wrote: > I haven't used it but Komodo (Professional version) says it has: > > ActiveState GUI Builder (Komodo Professional only) > > Enhance your applications with GUI dialogs: Simple, Tk-based dialog > builder with seamless round-trip integration, for Perl, Python, Ruby, > and Tcl. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python visual IDE
I didn't know about this product you mention (wxDesigner). I download the trial and it seems pretty good, reminds me the wxGlade. So you make the GUI in this, generate Python code and import the module on your main project and reference it respectively ?? On Nov 22, 4:58 pm, hg <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > I have already downloaded and seen the trial of Komodo Professional. > > Indeed it has a simple Gui Builder but one can only use TKinter on it. > > No wxWidgets support and far from truly RAD, but it is the only > > "integrated" > > GUI builder in these IDEs... > > > On Nov 22, 4:31 pm, "Steve" <[EMAIL PROTECTED]> wrote: > >> I haven't used it but Komodo (Professional version) says it has: > > >> ActiveState GUI Builder (Komodo Professional only) > > >> Enhance your applications with GUI dialogs: Simple, Tk-based dialog > >> builder with seamless round-trip integration, for Perl, Python, Ruby, > >> and Tcl.I do a lot of GUI programming with wxPython. > > I find that switching from desktop 1 (Eclipse/PyDev) to desktop 2 > (wxDesigner) becomes a reflex quite quickly ... even under Windows > thanks to virtuawin (http://virtuawin.sourceforge.net) - both packages > also are smart enough to notice when an open file has been modified > elsewhere. > > I also program in Visual-Studio and overall do not find the RAD/IDE > integration that much more convenient. > > Also, I generally get the job done in wxDesigner at the beginning of the > project, and seldom have to get back into it to twick the interface. > > hg- Hide quoted text -- Show quoted text - -- http://mail.python.org/mailman/listinfo/python-list
decorators question
Hi,
i am new to python and i have a question about how decorators are
working.
I have understand HOW they do their magic but i am trying to figure out
WHEN they do it...
I have the following simple example:
#-
def author(author_name):
def decorator(func):
func.author_name = author_name
return func
return decorator
@author("some author")
def F():
pass
# print F.author_name
#-
I am using Eclipse/PyDev and when i run this snippet from the PyDev
debugger,
i see that even though i do not call F() (or reference F.author_name),
the decorator and all this stuff is executed and updates F.autor_name
variable.
How is this thing really working ??
I mean, if we run this .py file (pythn test.py) from the command
prompt,
what the runtime will do, even if we do not have ane commands to
execute, only functions
as above ?
It will load all the module, all the functions and when it sees that
some function(s) are decorating, then it will start execute respectives
decorators ?
And this will do it for all decorated functions ?? Even if we do not
have any references to these functions ?
Shouldn't this code called when we actually DO call it ?
Thanks a lot for any enlightment on this,
objectref
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Re: decorators question
> def func(): > pass > > is *exactly* the same thing as: > > def func(): > pass > func = decorator(func) Yes, i know that but i thought that it is so when I call the function, not when the runtime just loads the module... >Python calls the decorator, not the decorated function. Hmmm...ok...it calls the decorator but when ?? It (the runtime) loads the .py file and start to call every decorator it finds on it, regardless of the existance of code that actually calls the decorated functions ?? I understand thet Python does not call the decoratated functiond but it ends up this way... > > additional reading: > > http://www.python.org/doc/2.4.4/whatsnew/node6.html > http://www.python.org/dev/peps/pep-0318 > > and the relevant chapters in the tutorial and the language reference. > I will have a lokk also thera, thanks! > -- http://mail.python.org/mailman/listinfo/python-list
Re: decorators question
At first, i am coming from another (language) programming world (C# mainly) and i hope you understand my wonders. Ok then, you tell me that the interpreter always execute the code in a module...If there are only def declarations in the module and no code to invoke them it does not execute anything. It must have a body (a call to a(some) method(s)) so it can execute something, right ?? In Soni's example (Soni thanks for the code), it indeed prints "called foo" but if i remove the @foo statement, as i see right now in the debugger, it does not execute anything. I recap: if i put only functions declarations on a .py file, like these: def A(): print "a" def B(): print "b" def C(): print "c" and run the program, nothing happens, nothing executed. I have to put a statment like print A() or b() to cause code execution. But if i simple declare a decorator for one function, like the one that Soni gave me, then it caused the deco function to execute. Why is that ?? On Dec 4, 9:46 pm, Soni Bergraj <[EMAIL PROTECTED]> wrote: > There was a copy-and-paste error with my last message. Better try this > for foobar.py: > > def foo(f): > print "called foo" > return 'some text' > @foo > def bar(): > print "called bar" > > -- > Soni Bergrajhttp://www.YouJoy.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: decorators question
>you're not listening. Be sure that i do...The fact that i come from another world does not mean that i am not listening, just that i find as strange some (new) things. Thank you all guys, i know what is happening now... Thanks again! kikapu -- http://mail.python.org/mailman/listinfo/python-list
Property error
Hi to all, i am trying to use properties in Python and i am sure i have made something wrong with the below code but i just cannot see what it is. Can anyone please help me on this ? The code is : class Person(object): age = 0 @property def age(): def fget(self): return self.age def fset(self, value): self.age = value me = Person() me.age = "34" print me.age and i am getting the error: " File "C:\projects\Python\p2.py", line 12, in me.age = "34" AttributeError: can't set attribute " What exactly i am doing wrong ?? Thanks a lot in advance. -- http://mail.python.org/mailman/listinfo/python-list
Re: Property error
>What version of Python? Most recent versions don't need the Hi, thanks for the help! I am using 2.5 version and i think i like more the @property decorator instead of the property(...) syntax. Is the code changing much using @property ?? Thanks again! -- http://mail.python.org/mailman/listinfo/python-list
Re: Property error
Your example Dennis, work as expected. I understand the mistake i have made. But when i try to fix the original code usihn @property now, it gives me the same error. So, here it is: class Person(object): _age = 0 @property def age(): def fget(self): return self._age def fset(self, value): self._age = value me = Person() me.age = 34 print me.age I am sure it is something very obvious but my skills does not (yet) enable me to figure this out,,, -- http://mail.python.org/mailman/listinfo/python-list
db access
Hi to all, is there a way to use an RDBMS (in my case, SQL Server) from Python by using some built-in module of the language (v. 2.5) and through ODBC ?? I saw some samples that use statements like "import dbi" or "import odbc" but neither modules (dbi, odbc) are present on my system... Any hint(s) ?? Thanks in advance -- http://mail.python.org/mailman/listinfo/python-list
Re: db access
Hey Martin, thanks for the fast reply! I have already seen that link and i just downloaded the pyodbc module but isn't Python already containing a "built-in" odbc module so to allow for db communication ?? On Dec 28, 6:06 pm, "Martin P. Hellwig" <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > Hi to all, > > > is there a way to use an RDBMS (in my case, SQL Server) from Python by > > using some built-in module of the language (v. 2.5) and through ODBC ?? > > I saw some samples that use statements like "import dbi" or "import > > odbc" but neither modules (dbi, odbc) are present on my system... > > > Any hint(s) ?? > > > Thanks in advanceHey there, > > Take a look at this:http://www.python.org/doc/topics/database/ > > Cheers, > > -- > mph -- http://mail.python.org/mailman/listinfo/python-list
Re: db access
Hi Johnf, are you referring to this ? http://www.freetds.org/ And how i can get psmssql.py so i can get a shot on it, is it included in FreeTDS ?? On Dec 29, 12:12 am, johnf <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > Hi to all, > > > is there a way to use an RDBMS (in my case, SQL Server) from Python by > > using some built-in module of the language (v. 2.5) and through ODBC ?? > > I saw some samples that use statements like "import dbi" or "import > > odbc" but neither modules (dbi, odbc) are present on my system... > > > Any hint(s) ?? > > > Thanks in advanceAlthough others have suggested using ODBC or ADO I have a > > different > solution. If you wanted a multi-platform I would use FreeTDS with > psmssql.py. psmssql.py does support the DB API 2.0 although it does not > support any of the extendsions. Works with Linux, Mac and Windows. > > Johnf -- http://mail.python.org/mailman/listinfo/python-list
program deployment
hi to all folks here, i am learning Python, just finished a book and i am starting to write programs. I just want to ask, is the "correct" way to deploy my programs to other computers, the .pyc files ?? I now that with the "-m compileall ." switch can compile a .py file into bytecodes. So i suppose that if Python has to run a .pyc file, it will load and execute it faster. And if i have some "sensitive" data in my source, like passwords (and the source of cource!) they will be more secure in a compiled file. Is that correct ? Thanks a lot for any help! -- http://mail.python.org/mailman/listinfo/python-list
Re: program deployment
> Python code is normally deployed as straight source code. But isn't this a problem of its own ?? I mean, many people do not feel good if the know that their source code is lying around on other machines... -- http://mail.python.org/mailman/listinfo/python-list
Re: program deployment
> > Are they embarassed by their code? hehehe...no, just worried about stealing their ideas... -- http://mail.python.org/mailman/listinfo/python-list
Re: program deployment
> Under Windows, I ususally use py2exe+inno-setup. Xmmm...i have downloaded this and try a (very) simple project and it is working great. Of your experience, does it also working great when you have more complex solutions, e.x. many 3rd party modules like wxWidgets and so ?? -- http://mail.python.org/mailman/listinfo/python-list
Re: program deployment
Ok, i got the point...Things are a little bit different on the other way of the fence (Microsoft way...) and so many of Python's elements are a little (at least) strange at first... But hey, thank you all! -- http://mail.python.org/mailman/listinfo/python-list
Re: program deployment
> Of course you do not distribute .cs (or .vb) files when deploying your > application, but decompilers for .NET are plenty. Same for Java. Yes, but in .Net we have some strong dotfuscators that makes reverse engineer really difficult. In any way, it is not so easy to get to the source as .py files is. -- http://mail.python.org/mailman/listinfo/python-list
About installing new Python version.
Hi to all, i started with Python at v2.5 and now i see that a new version is released. As i already have a lot of stuff for Python installed in the site- packages directory, which is the correct way to install a new Python version without do any damage ? Remove Python and ALL Python related software and install them all over again (painful)? Remove Python and do not touch anything else and install new version on top of them at the same directory ? Any other choice available ? Thanks a lot for any help! -- http://mail.python.org/mailman/listinfo/python-list
Re: About installing new Python version.
On Apr 19, 11:39 am, [EMAIL PROTECTED] wrote: > On Apr 19, 2:03 am, king kikapu <[EMAIL PROTECTED]> wrote: > > > Hi to all, > > > i started with Python at v2.5 and now i see that a new version is > > released. > > As i already have a lot of stuff for Python installed in the site- > > packages directory, which is the correct way to install a new Python > > version without do any damage ? > > > Remove Python and ALL Python related software and install them all > > over again (painful)? > > Remove Python and do not touch anything else and install new version > > on top of them at the same directory ? > > Any other choice available ? > > > Thanks a lot for any help! > > Just install the new version. It should link everything back up so the > new version is active, but the old versions are intact. > > ~Sean I installed 2.5.1 and as the installer said, it have replaced my old installation with the new one, something like i wanted to do! So i checked and everything seems to working fine. But this is an update release to 2.5, i do not know what is happening when, for example, a totally new Python version come out, like 2.6 or 2.7 or... -- http://mail.python.org/mailman/listinfo/python-list
Re: About installing new Python version.
On Apr 19, 12:10 pm, Ant <[EMAIL PROTECTED]> wrote: > > checked and everything seems to working fine. But this is an update > > release to 2.5, i do not know what is happening when, for example, a > > totally new Python version come out, like 2.6 or 2.7 or... > > Again just install it - it will by default install alongside Python > 2.5 in a different directory, and set itself as the default python > version. You'll then need to update all your third party extensions to > ones compiled against the new version - so if you have a lot of these, > it makes sense to wait a while before upgrading. > > -- > Ant. Hmm...ok, i was sure that i wouldn't avoid that...The nice thing is that 2.5.1 installed in default directory so no problem for now. Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: About installing new Python version.
On Apr 19, 1:51 pm, Steve Holden <[EMAIL PROTECTED]> wrote: > Good question. kk is right - with a change in *major* version (such as > 2.4 to 3.5, 3.5 to 3.6) the compiled extensions will be incompatible, > and will need to be recompiled. This can take a while, as extension > authors frequently have other things to do besides maintain their > extensions. > > As you have found out, though, when only the *minor* version changes you > can just frop the new version in over the old and all your installed > extensions and packages continue to work just fine. > > regards > Steve > -- > Steve Holden +44 150 684 7255 +1 800 494 3119 > Holden Web LLC/Ltd http://www.holdenweb.com > Skype: holdenwebhttp://del.icio.us/steve.holden > Recent Ramblings http://holdenweb.blogspot.com Thanks Steve, it is just the way i understood this, after seeing what the installer did. -- http://mail.python.org/mailman/listinfo/python-list
Re: 32 OS on 64-bit machine
I have at home an AMD Turion 64 and using Ubuntu. You may be interested on this, i will post here the results when i get back home! -- http://mail.python.org/mailman/listinfo/python-list
Re: 32 OS on 64-bit machine
At Amd Turion 64, it gives:
('32bit', 'ELF')
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Gui thread and async jobs.
Hi, i am reading the book "Python Cookbook, 2nd edition" and i encountered a very handy recipe, the one that is called "Combining GUIs and Asynchronous I/O with Threads" It is talking about retain a main GUI thread, doing async work with worker threads and have both talk through a Queue object to dispatch their messages, so the main (GUI) thread remain responsive. It has a very good example by using Tkinter and Qt that is indeed working. The only point that make me wonder is that the QUI thread has to use some polling to check for messages in the Queue. Author said that another alternatives exists (by not doing polling) but the complexity makes them non-practical for the 90% of ocassions. I remember in C# we deal with that sort of things with events/ delegates. Hos the same thing is possible in Python, has anyone any link(s) to have a look ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Gui thread and async jobs.
On May 8, 4:00 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > Hi, i am reading the book "Python Cookbook, 2nd edition" and i > > encountered a very handy recipe, the one that is called "Combining > > GUIs and Asynchronous I/O with Threads" > > > It is talking about retain a main GUI thread, doing async work with > > worker threads and have both talk through a Queue object to dispatch > > their messages, so the main (GUI) thread remain responsive. > > It has a very good example by using Tkinter and Qt that is indeed > > working. The only point that make me wonder is that the QUI thread has > > to use some polling to check for messages in the Queue. > > > Author said that another alternatives exists (by not doing polling) > > but the complexity makes them non-practical for the 90% of ocassions. > > I remember in C# we deal with that sort of things with events/ > > delegates. > > Hos the same thing is possible in Python, has anyone any link(s) to > > have a look ? > > It depends on the toolkit you use. Qt has thread-safe custom events in 3.x, > and afaik signal/slots (and thus events) are generally thread-safe in 4.x. > So, no problems there. > > Diez Aha...So you do not use polling there (in Qt), correct ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Gui thread and async jobs.
On May 8, 5:52 pm, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > >> It depends on the toolkit you use. Qt has thread-safe custom events in > >> 3.x, and afaik signal/slots (and thus events) are generally thread-safe > >> in 4.x. So, no problems there. > > >> Diez > > > Aha...So you do not use polling there (in Qt), correct ? > > You don't need to, no. > > Diez Thanks! -- http://mail.python.org/mailman/listinfo/python-list
'int' object is not callable in an threaded app
Hi,
i have a problem with the following piece of code that id just drive
me nuts (from the morning...)
I think is more Python specific than Qt, folks from Qt forum have
already give me directions of how to do it but that Python error
message is just impossible for me to figure out. And i am sure that it
something just under my nose...
So, i have a form with 2 spin boxes, a button and a progress bar. When
i hit the button i expect to see the progressbar filled with the
values of spFrom and spTo (the 2 spinboxes)
I was given help if how to setup correctly the Signals and Slots
mechanism but i am stuck at this Python error at the "worker.start()"
command:
TypeError: 'int' object is not callable
Before i go and suicide, has anybody an idea what is going on
here ??...
import sys
from PyQt4 import QtCore, QtGui
from calculatorform_ui import Ui_CalculatorForm
from ui_countNumbers import Ui_MainWindow
from time import sleep
class WorkerThread(QtCore.QThread):
def __init__(self, start, end):
QtCore.QThread.__init__(self)
self.start = start
self.end = end
def run(self):
for x in range(start, end):
self.emit(QtCore.SIGNAL("updateProgress"), x)
class CountNumbersForm(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
@QtCore.pyqtSignature("")
def on_start_clicked(self):
worker.start()
def updateProgress(self, val):
self.ui.progres.setValue(val)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
count = CountNumbersForm();
worker = WorkerThread(count.ui.spFrom.value(),
count.ui.spTo.value() + 1);
QtCore.QObject.connect(worker, QtCore.SIGNAL("updateProgress"),
count.updateProgress, QtCore.Qt.QueuedConnection)
count.show()
sys.exit(app.exec_())
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Re: 'int' object is not callable in an threaded app
> It appears that worker.start gets set to the result of > count.ui.spFrom.value(). If that result is an int, then worker.start() is > going to generate the TypeError you received. Did you actually mean to call > worker.run() instead? > > --- > -Bill Hamilton Some friend pointed out to me an hour ago, it was indeed that damn variable... Anyway, thanks Bill! -- http://mail.python.org/mailman/listinfo/python-list
Replacing overloaded functions with closures.
Hi,
i am trying, to no avail yet, to take a C#'s overloaded functions
skeleton and rewrite it in Python by using closures.
I read somewhere on the net (http://dirtsimple.org/2004/12/python-is-
not-java.html) that in Python we can reduce code duplication for
overloaded functions by using closures.
I do not quite understand this. Let's say we have the following simple
C# code:
int func(int i) { return i * 2; }
string func(string s) { return s + s; }
bool func(bool f) { return !f; }
I wasn't able to find a way to express this thing in closures. I even
tried to have the parameters i, s and f as parameters with default
arguments with None value in the inner function and there to check for
the None and do the needed work but i am not sure if this is the
correct solution.
Any help ?
thanks in advance.
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Re: Replacing overloaded functions with closures.
> The closures discussed in the article are not a solution for
> function overloading. They are a solution for function
> composition.
Hmmm
>
> Python generally has no need for function name overloading--if
> you really want it you must do it manually using runtime type
> checking.
>
> def func(obj):
> if isinstance(obj, bool):
> return not obj
> elif isinstance(obj, int):
> return obj * 2
> elif isinstance(obj, basestring):
> return obj + obj
> else:
> raise NotImplementedError('type %r not supported' % type(obj))
I have already come up with that solution but i was a little excited
from that article that i can do the same thing with closures...And get
rid of the isinstance commands.
> I'm not sure what the author was getting at, exactly.
May be that point confused me too!
Thanks Neil!
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Re: Replacing overloaded functions with closures.
Ok, i see... Thank you all :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
On Aug 3, 5:00 pm, gregarican <[EMAIL PROTECTED]> wrote: > On Aug 3, 10:58 am, king kikapu <[EMAIL PROTECTED]> wrote: > > > Hi, > > this is actually a question to those of us who use Eclipse and Pydev > > as their main Python developing environment. As i use Eclipse (3.3 > > Europa) only for Python and i have nothing to do with Java, is there a > > way to disable/uninstall some Java-specific stuff and make the > > environment actually more snappy ?? > > > thanks for any help > > I've used Eclipse for Java, Python, and Ruby development and can say > that AFAIK "Eclipse" and "snappy" are contradictions. Like "jumbo" > "shrimp" :-/ xexexe...I am sure about that :) I was wondering if we can throw away some java-stuff and make our life easier (or, snappier)... -- http://mail.python.org/mailman/listinfo/python-list
Eclipse/PyDev question.
Hi, this is actually a question to those of us who use Eclipse and Pydev as their main Python developing environment. As i use Eclipse (3.3 Europa) only for Python and i have nothing to do with Java, is there a way to disable/uninstall some Java-specific stuff and make the environment actually more snappy ?? thanks for any help -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
On Aug 3, 5:46 pm, "Danyelle Gragsone" <[EMAIL PROTECTED]> wrote: > I wonder how long before they come out with a python version of > eclipse. I know there is a C/C++ now. > > Danyelle The only problem i see in Eclipse/Pydev solution is that Eclipse is bulky...I was not designed for specific Python usage and because of that we have a lot of stuff that does not concern us. I started to look at Eric4 and i must way i like it a lot. I am not sure if i switch yet but it seems very nice. -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
News" (or, news to me :) ) The creator of PyDev, contacted me and told me that latest version of PyDev need not require the whole SDK but only the Runtime Platfom is OK. That means that we download only the 40MB file (and not the 120 one) and this does not include all the Java stuff that we see in SDK. So, combined with PyDev, we have an editor just for Python! I test it a few hours now and it is really fast! -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
Ah, and i think that the working set of Eclipse is smaller now... -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question.
> I like pydev and purchased the extensions ... there are bugs of course but > what stopped me from using it is a project were I had some very large files > (my fault). What do you mean by "very large files" ? Can't PyDev handle such ? -- http://mail.python.org/mailman/listinfo/python-list
Ipc mechanisms and designs.
Hi, inspired of the topic "The Future of Python Threading", i started to realize that the only way to utilize the power of multiple cores using Python, is spawn processes and "communicate" with them. If we have the scenario: 1. Windows (mainly) development 2. Processes are running in the same machine 3. We just want to "pass" info from one process to another. Info may be simple data types or user defined Python objects. what is the best solution (besides sockets) that someone can implement so to have 2 actually processes that interchanged data between them ? I looked at Pyro and it looks really good but i wanted to experiment with a simpler solution. -- http://mail.python.org/mailman/listinfo/python-list
Re: The Future of Python Threading
> All of which is avoided by designing the program to operate as > discrete processes communicating via well-defined IPC mechanisms. Hi Ben, i would like to learn more about this, have you got any links to give me so i can have a look ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about properties.
On Aug 10, 1:33 pm, Marc 'BlackJack' Rintsch <[EMAIL PROTECTED]> wrote: > On Fri, 10 Aug 2007 03:21:29 -0700, king kikapu wrote: > > Hi, > > > i read in a book the following code snippet that is dealing with > > properties: > > > class ProtectAndHideX(object): > > def __init__(self, x): > > assert isinstance(x, int), '"x" must be an integer!"' > > self.__x = ~x > > > def get_x(self): > > return ~self.__x > > > x = property(get_x) > > > Can anyone please help me understand what the symbol "~" does here ?? > > This has nothing to do with properties. For integer objects ``~`` is the > bitwise negation or invertion operator. > > Ciao, > Marc 'BlackJack' Rintsch Xmmm...ok then but what is actually doing there ?? I removed it and things seems to work the same way... -- http://mail.python.org/mailman/listinfo/python-list
Question about properties.
Hi, i read in a book the following code snippet that is dealing with properties: class ProtectAndHideX(object): def __init__(self, x): assert isinstance(x, int), '"x" must be an integer!"' self.__x = ~x def get_x(self): return ~self.__x x = property(get_x) Can anyone please help me understand what the symbol "~" does here ?? Thanks for any help! -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about properties.
Maybe is just a writers' "play" and nothing else. -- http://mail.python.org/mailman/listinfo/python-list
Re: Ipc mechanisms and designs.
On Aug 10, 10:33 pm, Nikita the Spider <[EMAIL PROTECTED]> wrote: > In article <[EMAIL PROTECTED]>, > king kikapu <[EMAIL PROTECTED]> wrote: > > > > Hi King Kikapu > There's a shared memory module for Python, but it is *nix only, I'm > afraid. I realize you said "mainly Windows" but this module seems to do > what you want so maybe you can work out a creative solution. > > http://NikitaTheSpider.com/python/shm/ Yes, i am currently developing mainly on windows but a cross-platform solution would surely interests me. I will check it out this! @Alex: Thanks, it looks very-very interesting... -- http://mail.python.org/mailman/listinfo/python-list
Eclipse/PyDev question
Hi, i am using Eclipse (Platform Runtime binary) with PyDev and i was wondering if someone can help me with this: 1. I set breakpoints to a .py file and i have told Eclipse to open the Debug perspective when it sees that some .py file(s) of my project indeed contains breakpoints. So, i press F9, Eclipse starts, Debug perspective opens and i can use the debugger just fine. But when the app terminates, how can i tell Eclipse to switch automatically to the PyDev perspective and not remain in the Debug one ? 2. Let's say we have a project that consists of some .py files. I want to press F9 when the editor displays anyone of these files but make Eclipse to run the whole project (that has another .py as "default") and not the script that i am currently working on, is that possible ?? Thanks a lot for any help -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question
On Aug 13, 1:44 pm, [EMAIL PROTECTED] wrote: > On Aug 13, 11:48 am, king kikapu <[EMAIL PROTECTED]> wrote: > > > Hi, > > > i am using Eclipse (Platform Runtime binary) with PyDev and i was > > wondering if someone can help me with this: > > > 1. I set breakpoints to a .py file and i have told Eclipse to open the > > Debug perspective when it sees that some .py file(s) of my project > > indeed contains breakpoints. So, i press F9, Eclipse starts, Debug > > perspective opens and i can use the debugger just fine. But when the > > app terminates, how can i tell Eclipse to switch automatically to the > > PyDev perspective and not remain in the Debug one ? > > You don't, Eclipse keeps the same perspective because for what it > knows you might want to debug some more and it correctly avoids to > decide what is good for you. Switching to the debug perspective when > you issue a debug command is an exception to the normal switching of > perspectives with the respective big buttons and the menu. > If you wish to switch perspective to edit code before debugging again, > putting editors and appropriate accessory views in the debug > perspective might be good enough. > > > 2. Let's say we have a project that consists of some .py files. I want > > to press F9 when the editor displays anyone of these files but make > > Eclipse to run the whole project (that has another .py as "default") > > and not the script that i am currently working on, is that possible ?? > > Executing the current file is a bad habit, Eclipse remembers a list of > execution/debug configurations that can be selected from a dropdown > list in the toolbar and edited with a dialog box; after you setup > entry points for a project you can use and edit them as needed. > I'm using Eclipse for Java and my entry points include remote > debugging of a GUI application, about 6 JUnit tests, about 3 command > line tools with many complex parameter sets each, and some Ant builds; > it would take about one hour of trial and error to reconstruct the > command lines, classpaths and JVM options. I only run the current file > as a draft for an edited configuration. > > Regards, > Lorenzo Gatti Hey Lorenzo, thanks for the help! I understood that with the Debug perspective. Ok, i will, as currently, have to swtick manually to PyDev. But i cannot figgre out how i can tell Eclipse to run the whole Project and not the currently active script that i work on... -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question
Ah, i forgot another one: as any project evolves, you need to organize it in directories. So, i have a project named "Dev" and Eclipse has provided me (in Navigator) with "Dev" and "Src". Inside Src i put my .py files. Let's say that i want to create a directory there (will i make it in "Src" or in "Dev") to put other .py files. I tried adding a "Folder", i also tried to add a "Pydev Source Folder", either way i cannot refer to these files from a .py located in Src directory with the usual "from folderA import"...It does not understand the folder structure and i am pretty sure i am missing something obvious here... -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyDev question
Fabio, thanks for the reply! Anyway, i saw that i cannot import anything if i use "Source Folders" in Eclipse/PyDev. The only way i can accomplish that is by using "PyDev Packages". Thus, i can import whatever i want ant intellisense is working great! I just cannot understand the usefulness of "PyDev Source Folders"... -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE for Python
On Aug 21, 12:00 pm, Joel Andres Granados <[EMAIL PROTECTED]> wrote: > Hello list: > > I have tried various times to use an IDE for python put have always been > disapointed. I have also tried a lot of them (IDEs) in the last year. I was finally happy with Eclipse/Pydev but i was always wanted a more "true" IDE for Python. I think i found it in Eric4 http://www.die-offenbachs.de/eric/index.html You can download from here http://www.riverbankcomputing.co.uk/pyqt/download.php (binary installer for Windows that contains Eric and PyQt) and have a look at it! -- http://mail.python.org/mailman/listinfo/python-list
Re: Will Python 3.0 remove the global interpreter lock (GIL)
On Sep 3, 9:15 am, Michele Simionato <[EMAIL PROTECTED]> wrote: > On Sep 3, 2:21 am, llothar <[EMAIL PROTECTED]> wrote: > > My personal opinion (and I am not the only one in the Python > community) is that > if you want to scale the way to go is to use processes, not threads, > so removing the GIL would be a waste of effort anyway. > Look at the 'processing' module in PyPI. > > Michele Simionato I second that. You may also look here, http://www.parallelpython.com/ I tested it and work as expected. You can see all your processing- cores work nicely and balanced. -- http://mail.python.org/mailman/listinfo/python-list
Re: Will Python 3.0 remove the global interpreter lock (GIL)
I was wondering (and maybe i still do) about this GIL "problem". I am
relatively new to Python (less than a year) and when i started to
think about it i said: "Oh, this IS a problem". But when i dig a
little more, i found that "Ah, maybe it isn't".
I strongly believe that the best usage of multiple cores processor
will be achieved if programming languages are modified to support this
on their "hearts". Code blocks that would be identified by the
compiler and run in parallel and such things. Laboratories are working
on these stuff but i do not expect something in the very-near future.
So, as i mentioned above, there are solutions for that right now
("parallel python" and others) that enabled us with little effort to
spawn a new python interpreter, thus allowing the OS to schedule it on
a different core and do the job this way relatively cheap.
I wouldn't recommend going to IronPython despite the fact that the CLR
better utilize MP. The reason for this is that i would NEVER give up
the freedom that CPython gives me by exchange "better" usage of the MP
and platform lock-in.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Will Python 3.0 remove the global interpreter lock (GIL)
I was wondering (and maybe i still do) about this GIL "problem". I am
relatively new to Python (less than a year) and when i started to
think about it i said: "Oh, this IS a problem". But when i dig a
little more, i found that "Ah, maybe it isn't".
I strongly believe that the best usage of multiple cores processor
will be achieved if programming languages are modified to support this
on their "hearts". Code blocks that would be identified by the
compiler and run in parallel and such things. Laboratories are working
on these stuff but i do not expect something in the very-near future.
So, as i mentioned above, there are solutions for that right now
("parallel python" and others) that enabled us with little effort to
spawn a new python interpreter, thus allowing the OS to schedule it on
a different core and do the job this way relatively cheap.
I wouldn't recommend going to IronPython despite the fact that the CLR
better utilize MP. The reason for this is that i would NEVER give up
the freedom that CPython gives me by exchange "better" usage of the MP
and platform lock-in.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Will Python 3.0 remove the global interpreter lock (GIL)
I was wondering (and maybe i still do) about this GIL "problem". I am
relatively new to Python (less than a year) and when i started to
think about it i said: "Oh, this IS a problem". But when i dig a
little more, i found that "Ah, maybe it isn't".
I strongly believe that the best usage of multiple cores processor
will be achieved if programming languages are modified to support this
on their "hearts". Code blocks that would be identified by the
compiler and run in parallel and such things. Laboratories are working
on these stuff but i do not expect something in the very-near future.
So, as i mentioned above, there are solutions for that right now
("parallel python" and others) that enabled us with little effort to
spawn a new python interpreter, thus allowing the OS to schedule it on
a different core and do the job this way relatively cheap.
I wouldn't recommend going to IronPython despite the fact that the CLR
better utilize MP. The reason for this is that i would NEVER give up
the freedom that CPython gives me by exchange "better" usage of the MP
and platform lock-in.
--
http://mail.python.org/mailman/listinfo/python-list
wxPython import error...
Hi, i am just completed installing Python/Pydev/Eclipse/wxPython on an Ubuntu system and all are running fine except program that contains references to wx It gives me: ImportError: /usr/lib/python2.4/site-packages/wx-2.8-gtk2-unicode/wx/ _core_.so: undefined symbol: PyUnicodeUCS4_FromEncodedObject I installed the wx packages the way the wx web site says, especially for Ubuntu. Can anyone help with this as i have been searching the net for this with no luck... Thanks for any help -- http://mail.python.org/mailman/listinfo/python-list
PythonCard thoughts
Hi to all folks here, i downloaded and "playing" with PythonCard and i just want to share my thoughts so maybe we can discuss a little about it. I was used to wxGlade before and i think PythonCard is even better. I like the separate implementation of GUI and Code that PythonCard provides, i also like the "binding system" so you can bind functions to events and have them executed at runtime. I also like that it does not force you to use sizers and all that stuff and that you can freely place your components on the form and set their exact position just with the mouse. The only "problem" i see with this design is that by that separation of Gui/Code, you loose the intellisense that (ex. PyDev) some editors/ plugins can provide because in the .py file nothing is indicating that , for example, the btnDoWork is a Button object. This force you to remember many properties and switch back and forth between your code and the wxPython help file. This is not the case for wxGlade because all boilerplate code is in the same file (for good and for bad) and PyDev (and others too) can "understand" for which kind of objects we are talking about and so can display -and thus help us- with their properties. Apart from that, everything else is great. Any opinions/suggestion on all this ? -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCard thoughts
> I don't know much about PythonCard or wxGlade, but I use wxPython (which > wxGlade uses, right?) and you now have the option to separate your GUI > and code using an XRC file (xml file that describes layout). So perhaps > this is something you can do with wxGlade, but at the same time it might > still create the problem you describe above. However, it's very to have > your Python files contain just logic. Yes, both products (PythonCard and wxGlade) uses wxPython. It's just that PythonCard is sitting on top of wxPython and it intercepts the events generated. Then it search for an appropriate declared function on your code and call it (all this happens at runtime). It shield us from much of the boilerplate code that gui toolkits require and in the case that you need to address directly wxPython, you just can! I discovered that when you run your designed GUI from PythonCard's layoutEditor, you have the ability to define a command line option that is called "Message Watcher". This, will show you the names of the actual events that you have to write code for, so you, at least for this, do not have to dig the docs for their names. Pretty good! -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCard thoughts
> Would you please explain more in detail this "Message Watcher" option? > I use PythonCard from time to time, and I find it very easy to use and > practical, even considering the small shortcomings you mentioned > above, but I have no idea of this feature you're talking about.. > > Regards, > Luis Luis, go to File/Run Options and check the third choice called "Message Watcher", then run your design. You will then see that every event that is triggered is displayed to you and when you actually want to see the event that you interested in, you just cause it to happen and then it is displayed on the message watcher event grid. You then go to your source file and armed with the known notation (on_controlName_eventName) you write the code. I copy from the manual of PythonCard: "The Message Watcher integrates with the wxPython event model to show you in real time the events that are being triggered when a PythonCard application is running. It helps determine where the application code should go and verify that a PythonCard application is operating as expected." -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCard thoughts
Ο/Η John Henry έγραψε: > (If I understand your question correctly) > > There is no restirction on what you call your objects. For instance, > I do call all of my buttons btnSomeThing, and so forth. No, i surely didn't mean this! What i mean is that the creation of these components happens to NOT reside in the .py file that we are use to put our logic in, so, the various Editors/Plug-ins cannot "understand" what type is the object we refer to so they cannot provide intellisense information. Let' say for example, that we create a design in PythonCard that contains a form and just one butto named btnStart. In our .py file we want to refre to that button in a way such: self.components.btnStart At this point, if we had the code that created this button in our file, PyDev (for example) would show us the properties of btnStart because it has understood that we are using a wx.Button. This is not the case of thePython card because this creation is happened to runtime by...PythonCard! Anyway, it is not that important from keeping me from using PythonCard. Do we know more things about the developing of this product, is it active/dead or something ?? I plan to use it to create something that will take a long time to finish and i wouldn't want to find out that the product is a dead- end... -- http://mail.python.org/mailman/listinfo/python-list
About Trolltech QT OpenSource license.
Hi to all, i am coming from the Microsoft (.net) world and at the quest of finding the right GUI toolkit that i can use from Python, i have two obvious choices to choose from: wxPython and Qt. Both are looking very good. Qt has Qt designer, a tool that really reminds me of the forms designers that we have in VS.Net.The productivity someone can gain from tools like these can be really astonished. I saw at the forum here that a lot of debate is coming from the "strange" interpretation of it's Open Source Edition lisence. After a lot of reading i was under the impression (and many others with me) that even a stand alone developer working in-house at company cannot use Qt OS Edition and must buy the commercial lisence. I sent an emai to them today and i think their response is interesting, so i appose it here; # Thank you for your inquiry regarding the Qt Open Source Edition. The open source edition may be used for either your own private use or for an application used only internally by your company if the application is developed by you on company time. With internal company use under the GPL it is absolutely imperative that the application not be distributed outside of the legal entity. If this happens then the GPL source distribution requirements (as well as all other GPL requirements) will take effect. The internal use by the company falls under the "private modification" exception to the GPL. Please note that if you begin your application development with the GPL version, that application must be GPL licensed and Trolltech does not permit developers to start with the Qt Open Source Edition and later convert to a commercial license. Good luck with your development and please contact [EMAIL PROTECTED] if your company wishes to purchase a commercial Qt license at some point in the future. -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
Ο/Η Jarek Zgoda έγραψε: > king kikapu napisa³(a): > > This is a bullsh*t. Qt is free (as in "free speech") on GPL. Nothing > stops you from using it in any commercial project if only it fits the > licensing terms (i.o.w. it's free software). This specially applies to > inhouse development, as in such case there's no "distribution". Hmmm...how a commercial software (that means i get paid for give it) it will be consider "free software" ? I ask because i surely do not understand correctly the GPL lisence and all that stuff. > Hey, there's no such statement here. Where did you get this "must buy > the commercial lisence"? Good point! I got it because at the last portion of my email, i asked for it. I asked them that: "And in the case i want to build something that i want to later sell (as an individual)..." so i got it back. > Plus, this (sales)person forgot to state clearly, that GPL covers only > distribution, not the cost of software. If you manage to get some hot > cash for selling sources of your GPL-ed program, the license would not > try to stop you from doing that. ;) As i said, i do not fully understand all this license stuff. All i want to ask is, i can make GPL software and gain money from this ? And if that so, then why they "force" you to buy the commercial lisence in such case ? -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
Ο/Η Peter Decker έγραψε: > There is another alternative: Dabo, which wraps the wxPython toolkit. > It has a GUI designer, although not as polished as the Qt Designer. > Check out some of their screencasts to see their tools in action. You > can find them at http://dabodev.com/documentation I am aware but i prefer to use PythonCard if i choose wxPython over Qt. I think Dadbo has a lot of work to be done, it is surely very promising, thanks! @ Kevin and Jarek : thanks for the enlightening of that GPL thing. So, if i understand, i create my Python software using Qt as my GUI, i earn the money for it with the obligation to release my source code and somewhere in my files i explicilty write that this software is under the GPL lisence, is that correct ?? And i am legal all the way out ?? So why these people at Trolltech have the word "Commercial" at their mouth all the time ?? I can understand of course that money is all about but becauce they released Qt under GPL they simply cannot prevent anyone from gaining money using it. -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
On Apr 11, 10:56 am, Robert Kern <[EMAIL PROTECTED]> wrote: > Others have given good answers. I would only like to clarify what I think is > the > source of confusion here. While the FSF and many open source advocates make a > distinction between the words "commercial" (meaning that someone derives money > from distributing the software, whether it is GPLed or not) and "proprietary" > (meaning that the software is not being distributed under an open source > license > but one that restricts user's rights), Trolltech abuses the term "commercial" > to > mean "proprietary" in this case. Ok, i see...So i can use Qt OS edition and earn money from this as long as i explicitly say (is a reference to a GPL in a readme text file enough for this ?) that this software is under the GPL lisence and i have the obligation to give the source code with it. I will reply to that email of Trolltec's today and i will tell them about the things mentioned here, basically just the sentence i wrote above. I see what they will reply and post it here... -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
> > Ok, i see...So i can use Qt OS edition and earn money from this as > > long as i explicitly say (is a reference to a GPL in a readme text > > file enough for this ?) that this software is under the GPL lisence > > and i have the obligation to give the source code with it. > > It's a bit more complicated than that. Why ? From the whole discussion here, i understand that ok, i will give my source code with my program and i can sell this at the same time and earn money. If i mess with Qt, i will write software for myself, internaly at the company i work for and maybe produce software and sell it by myself. If you think that i am missing something, please let me know. (Maybe i should stick with wxPython and PythonCard...) -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
Ο/Η Robert Kern έγραψε: > It's a bit more complicated than that. There are good resources for > understanding the implications of the GPL on the FSF's site which other people > have pointed out. >From what i can understand, you can sell your product and you have to give the source. Also you must state clearly somewhere in the software that this is under GPL. Are there other complications that comes to the party ? (i really like Qt but if i have chances to mess with laywers, i show stick to wxPython and PythonCard...) -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
On Apr 12, 1:02 am, Robert Kern <[EMAIL PROTECTED]> wrote: > All parts of the software have to be licensed compatibly with the GPL. The FSF > has a fairly comprehensive list of the licenses they believe are > GPL-compatible. > The source that you provide needs to be the preferred form for making > modifications; i.e., you can't use a tool that obfuscates the code. You need > to > provide the scripts that you use to build the software. You have to be careful > about using patented techniques in your code. The source code must be offered > at > no extra charge (this part of the license is a bit tricky, so please read the > license and the commentaries). Ok, i see...You said "All parts of the software have to be licensed compatibly with the GPL". What if, let's say, my application's GUI is made by Qt (Open Source edition that is indeed under GPL license) and in this application i use some module(s) that i bought from some other company and they aren't under GPL, do you see any implication to this ? Thanks you all again! -- http://mail.python.org/mailman/listinfo/python-list
Re: About Trolltech QT OpenSource license.
I dig a little bit more on the Trolltech's site and i think that this page is telling all the truth: http://www.trolltech.com/developer/downloads/qt/faq So, this tells us all the good stuff people in this thread are talking about, i think is clear enough. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python editor/IDE on Linux?
I experiment with Ubuntu nowadays, and i find my Windows combination a realy win also there, Eclipse and PyDev. -- http://mail.python.org/mailman/listinfo/python-list
PyODBC Stored proc calling
Hi to all,
can anyone give me a jump-start about how to call Stored Procedures
from PyODBC ??
I want to execute a very simple testing Stored Procedure on an Sql
Server database.
I started using PyODBC and code like the following
cnxn = pyodbc.connect('DRIVER={SQL
Server};SERVER=hercules;DATABASE=pubs;UID=sa;PWD=pwd'')
for row in cnxn.execute("select au_fname from authors"):
print row.au_fname
cnxn.close()
and based on this, i can now write more complex ad-hoc sql string to
get/update data.
But how i can actually call Stored Procedures and passing parameters to
them ??
Let's say i have the following SP:
create procedure test_bed(@data varchar(100))
as
// do something here.
Any help ??
Thanks in advance
--
http://mail.python.org/mailman/listinfo/python-list
Re: PyODBC Stored proc calling
No one is using pyodbc ?? :) -- http://mail.python.org/mailman/listinfo/python-list
"Correct" db adapter
Hi to all, i have started a month ago to seriously studying Python. I am now looking at the databases stuff and i want the opinion of more experienced Python programmers (than me) at the following : I see that there are a lot of databases adapters on the net, some following the DB-API 2.0 and some others do not. I want to use a db- module that do not tie me down to a specific database and that fully supports DB-API 2.0 Now i am using Sql Server but who knows about tomorrow. I started using pyodbc and looking how i can e.x. call stored procedure with arguments and all that stuff. This is using ODBC syntac and i found enough info on the net. Is the approach i took the "correct" one or is there a better db- module so i can use ? Thanks in advance -- http://mail.python.org/mailman/listinfo/python-list
Re: "Correct" db adapter
Thanks for the replies. I think i do not need something like ORM, but just a db-module that i can "work" the database with it. I just want to know if pyodbc is the "correct" solution to do so or if it is another db-module that is more usefull for this job. -- http://mail.python.org/mailman/listinfo/python-list
Re: "Correct" db adapter
Ok, i see.. Thanks a lot all of you for the help. I know from my Win/.Net/Sql Server expertise that odbc put a layer in the mix. That's why, for example, in .Net we have a native SqlClient data provider that talks to Sql Server directly. But one of the reasons that i started learning Python, is to NOT to be tied-up again with ANY company or specific product again (i had enough MS addiction over these years...). So, based on this direction, i am using pyodbc, which is DB-API2 compliant and i suppose that the code i write this way, will have little changes to use another db in the future. I dig the net and found that there are several efforts for modules specific to some databases but some of them are incomplete, faded, or not db-api2 compliant. So, i will check mxOdbc and see if there is a reason to use it over pyodbc. -- http://mail.python.org/mailman/listinfo/python-list
Re: "Correct" db adapter
Thank you all! -- http://mail.python.org/mailman/listinfo/python-list
Object type check
Hi to all, in statically-types languages, let's say C# for example, we use polymorphism through interfaces. So we define an interface I with method M and then a class C that implements I interface and write code for the M method. So, if we have a function that takes a parameter of type I, we know before-hand that it will have an M method to call. But in dynamic languages this is not the case and we can pass whatever we want to that function. Assuming that someone writes a library in Python that other programmers will use, what is the correct way to check inside that function if the parameter passed is of the correct type, maybe "isinstance" BIF ? Thanks in advance! -- http://mail.python.org/mailman/listinfo/python-list
Re: Object type check
> Dont restrict them to particular types. You would > not restrict them to a particular class in C#. Instead, you define the > interfaces simply by how you use the objects. Of cource i restrict them to particular types! In C# you cannot pass something bad this way because the compiler will just catch it! I see what you mean by "duck typing". So you suggest the "do nothing at all" direction, better document my code so other can see what is expected, right ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Object type check
at first, thanks you all for your help! So, i will follow your advice.In a moment though, i thought that "ok, do not check anything of the parameter's type but do a try/catch at the calls inside the function" But this way, i would rather defeat the purpose because i have to try/ catch in *every* call inside the func. So, i suppose that i wouldn't want to do that and just try to make the call in whatever they passed me in. Strange world the dynamic one -- http://mail.python.org/mailman/listinfo/python-list
Re: Object type check
> And so what ? Once an exception got caught, what are you going to do ? You have absolutely right, that's the reason i rejected this. > You're starting to see the light, my friend !-) > > > Strange world the dynamic one > > If that's too dynamic for you, then run for your life Hehe...you know, it is a little bit strange if you are used to Delphi, C# or any other statically-typed language and suddenly you starting programming in a dynamic one, really strange! :) All of the efforts all these years to declare everything correct, to fight with the compiler (and to always have him win...), to ...[put whatever here] and now Python...What can i say!... Thanks for the help! -- http://mail.python.org/mailman/listinfo/python-list
Re: Object type check
> def modify(list_of_x): > for x in list_of_x: > try: > x.change_in_place # don't call the method, just check it exists XX...what exactly is going on here ? I mean, what is actually happens if you omit the parenethesis as you just did ? I understand that it does not call the method, but what is really doing ?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Object type check
Ο/Η Michele Simionato έγραψε: > See http://users.rcn.com/python/download/Descriptor.htm for more than > you ever wanted > to know about attribute access in Python. > > Michele Simionato Great stuff Michele, thanks! -- http://mail.python.org/mailman/listinfo/python-list
NetUseAdd mystery
Is anyone see any error in the following code:
mapDrive = "MyServer\\C$"
data = {'remote' : mapDrive, 'local' : 'M:', 'password' :
'mypassword', 'user' : 'Administrator', 'asg_type' : 0}
win32net.NetUseAdd(None, 1, data)
It gives me "pywintypes.error: (1326, 'NetUseAdd', 'Logon failure:
unknown user name or bad password.')" and i cannot figured out why...I
searched the forum about the syntax of NetUseAdd command and i think
that the syntax is correct and also are the data that i pass to it.
(the same data can give me a connection if i use "net use ..." from a
command line"
So, what am i doing the wrong way (and keeps me on this the last 2
hours??...)
Thanks for a any enlightenment...
--
http://mail.python.org/mailman/listinfo/python-list
Re: NetUseAdd mystery
> I think your problem is that C$ is a "special" share. Try creating > a share and connect to it instead. It is either that your your userid/ > password are in fact incorrect. > > -Larry No, my credentials are absolutely correct. As for the "$", what is the possible problem with that ?? Net use is working great and i think that also the net functions of win32api are working correct. The problem must be in some other point... -- http://mail.python.org/mailman/listinfo/python-list
Re: NetUseAdd mystery
> You need to use level 2 info to pass the username. > Level 1 is for the old-style share with its own password. > Also, it should be 'username': instead of just 'user':. > > hth >Roger Roger many-many thanks! That was it, i had to put "username" instead of "user" and 2 instead of 1 at the calling... Thanks again! -- http://mail.python.org/mailman/listinfo/python-list
Re: book for a starter
Me, i bought this http://www.amazon.com/Core-Python-Programming-2nd/dp/0132269937/sr=8-1/qid=1172592163/ref=pd_bbs_sr_1/105-9302229-1138834?ie=UTF8&s=books and i really think it is a great book for learning Python. It refers to the latest Python version (2.5) and covers a lot of things, besides the language. -- http://mail.python.org/mailman/listinfo/python-list
Eclipse/PyQt/Eric4 question
Hi, this is actually goes to whoever is using Eclipse and Eric4, the IDE that comes bundled with PyQt. I was using Eclipse until i saw Eric4 and i started experiment with it, very nice work. Eric4 has a feature that actually reminds us the work of some expensive IDEs, like Visual Studio, Delphi and the like: when you compile your project, it checks to see if some .ui files (Qt Designer form files) has changed and if so, it call pyuic.bat and compiles it (or them) transparently so it then runs your program with latest form changes. In Eclipse, i have the luxury of double-click a .ui file and thus Qt Designer opens and then design my forms there, but i cannot fing an automatic way to accomplish the thing that eric4 does: e.x. automatically compile changed .ui files when i hit F9. And it really a loss of time to go to dos-prompt and do this manually. Has anyone who work on Eclipse/PyDev and PyQt, found a way to do this ?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyQt/Eric4 question
> You can create a builder for calling an external program to do that on > builds (right-click project -> properties > Builders). > > Another option is configuring an external program run --> menu: run > > external tools > open external tools dialog (and you can bind a > shortcut to rerun the last external tool launched). > > Cheers, > > Fabio Hmmm...but this means that i am forced to do this for ALL .ui files on the project, either changed or not and this can slow things down... (pyuic.bat can run for one or for ALL .ui files) The goal is to find a way to automatically do this only for the changed ones, like eric does... Anyway, thanks for the help! -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse/PyQt/Eric4 question
On 14 Δεκ, 01:09, "Fabio Zadrozny" <[EMAIL PROTECTED]> wrote: > > Hmmm...but this means that i am forced to do this for ALL .ui files on > > the project, either changed or not and this can slow things down... > > (pyuic.bat can run for one or for ALL .ui files) > > The goal is to find a way to automatically do this only for the > > changed ones, like eric does... > > When you do a new builder, you can make it be run only when a file is > changed, and you can select as arguments only receiving the files > changed (build_files)... take a look at the variables to specify as > arguments (you could also select 'python.exe' as the external program > and choose some python script as argument + the files changed). > > The auto-build can be specified at the build options tab. > > Cheers, > > Fabio Axa! I didn't know (or better, i didn't experiment enough) this...So, basically you tell me that this is possible on Eclipse! I will test it at home on the afternoon, is sounds great! -- http://mail.python.org/mailman/listinfo/python-list
Re: What is The Eric4 IDE???
I use it for some time now and i think it is the best Python IDE out there, especially if someone wants to "play" with Qt. If you are on Windows, just install the Windows binary, it' all there! -- http://mail.python.org/mailman/listinfo/python-list
Psyco alternative
Hi, it seems that Psyco's author will not port it for the upcoming Python 3000 release :( So, for us who use it we will continue to use CPython 2.5.x version for some time to come. Is there an alternative to Psyco so i can have a look at ? Thanks in advance. -- http://mail.python.org/mailman/listinfo/python-list
Re: Psyco alternative
On 27 Μαρ, 14:35, Paul Rubin <http://[EMAIL PROTECTED]> wrote: > king kikapu <[EMAIL PROTECTED]> writes: > > it seems that Psyco's author will not port it for the upcoming Python > > 3000 release :( > > I think the idea is it will be part of PyPy and you should use that. I know that his efforts are on PyPy now but i do not know when PyPy is going to be stable and if i can use it with my current "development stack" (PyQt, Eric4 etc). I mean, i do not know if it will be possible to "abandon" CPYthon and use PyPy instead. -- http://mail.python.org/mailman/listinfo/python-list
Re: Psyco alternative
On 27 Μαρ, 15:56, "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote: > king kikapu wrote: > > On 27 Μαρ, 14:35, Paul Rubin <http://[EMAIL PROTECTED]> wrote: > >> king kikapu <[EMAIL PROTECTED]> writes: > >> > it seems that Psyco's author will not port it for the upcoming Python > >> > 3000 release :( > > >> I think the idea is it will be part of PyPy and you should use that. > > > I know that his efforts are on PyPy now but i do not know when PyPy is > > going to be stable and if i can use it with my current "development > > stack" (PyQt, Eric4 etc). I mean, i do not know if it will be possible > > to "abandon" CPYthon and use PyPy instead. > > Currently? No way. It's *way* to slow. > > Diez Ok, i know this. The one that i do not know, is if, let'say, in 2 years it will be ready for seriously development, PyPy will aim to "replace" CPython entirely ?? We are talking about an whole new distribution ? As for psyco, are there any alternatives to use now ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Psyco alternative
> > > As for psyco, are there any alternatives to use now ? > > Nope, but I heard through the grapevine that while it won't be supported for > all times to come, a new version is in the making. Aha!! It seems you have better "sources" than me! :) > But ultimately, the author says that the approach is flawed, so at *some* > point it will be discontinued. But that could be said about nearly > everything, couldn't it? > > Diez It is a pity because this module *does* really solve some problems... -- http://mail.python.org/mailman/listinfo/python-list
Re: Psyco alternative
> If it's about "some problems", then maybe Cython is an alternative. > > http://cython.org > > Stefan Hmmm...thanks but i think Pyrex-like solution is not the ideal one. Coming from C# and having 8 years of expertise on it, i have gain a very positive thinking about jit compilers and i think that psyco (ok, a just-in-time specializer) is a more easy (and more correct) way to go that mixing 2 languages. -- http://mail.python.org/mailman/listinfo/python-list
Re: Psyco alternative
> One reason attention is going to PyPy instead of Psyco... > > Jean-Paul I had a look at PyPy, it, indeed, have a very long way to go so we can consider it an alternative. -- http://mail.python.org/mailman/listinfo/python-list
Eclipse and PyDev Package explorer
Hi, i am trying to "fit" Eclipse/Pydev in my needs/preference, so i want to ask this: As it is now, i see all my projects in that TreeView (PyDev Package Explorer). I would rather want this to behave like a more "normal" IDE where you Open one project and if you want close it and Open another, just one at a time and not a TreeView with ALL your projects loaded in every time you open the IDE. Is there a way to accomplish thiks in Eclipse/Pydev ?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse and PyDev Package explorer
A, and another one: If i set a custom builder for a pydev project, is there a way for this builder to automatically be "assigned" to every (pydev) project i will create from now on or i have to re-define it for every new one ? -- http://mail.python.org/mailman/listinfo/python-list
Netbeans Early Access and Python3
Hi, have anyone using this release of NetBeans (6.5 with Python support) with Python 3 without any problems ? I mean, does it work with Python3 or only with 2.x ? -- http://mail.python.org/mailman/listinfo/python-list
