ANN: warehouse Objects in SQLite : y_serial module
Module download at SourceForge http://yserial.sourceforge.net Serialization + persistance :: in a few lines of code, compress and annotate Python objects into SQLite; then later retrieve them chronologically by keywords without any SQL. Most useful standard module for a database to store schema-less data. The module is instructive in the way it unifies the standard batteries: sqlite3 (as of Python v2.5), zlib (for compression), and cPickle (for serializing objects). If your Python program requires data persistance, then y_serial is a module which should be worth importing. All objects are warehoused in a single database file in the most compressed form possible. Tables are used to differentiate projects. Steps for insertion, organization by annotation, and finally retrieval are amazingly simple... y_serial.py module :: warehouse Python objects with SQLite http://yserial.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
Re: New Tkinter windows don't get focus on OS X
On Thursday 10 September 2009 18:19:09 Joshua Bronson wrote: True, but it'll still be a lot less painful for me to test my app if I can get it to steal focus when launched from the command line. If anyone knows how to do this in Tkinter, help would be much appreciated. look for widget.focus_force() and look for widget.grab_set_global() Yahoo for: Shipman Tkinter new mexico tech for a nice manual, if you do not have it yet. HTH - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Why can't I run this test class?
Dear all,
I'm a newbie for python, and I write a program to test how to
implement a class:
#!/usr/bin/env
python
class Test:
'My Test class'
def __init__(self):
self.arg1 = 1
def first(self):
return self.arg1
t1 = Test
print t1.first()
#
But when I run it, some errors take:
$ ./Test.py
Traceback (most recent call last):
File ./Test.py, line 13, in module
print t1.first()
TypeError: unbound method first() must be called with Test instance as
first argument (got nothing instead)
What I want is as the following c++ code do:
class Test
{
public:
Test()
:arg1(1)
{/*Do nothing*/}
int first() const
{ return arg1; }
protected:
int arg1;
};
void main(void)
{
Test t1;
std::cout t1.first;
}
Hope your help.
Thanks
Kermit
--
http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Fri, Sep 11, 2009 at 12:30 AM, Kermit Mei kermit@gmail.com wrote: Dear all, I'm a newbie for python, and I write a program to test how to implement a class: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test You missed the parentheses to call the constructor. That line should be: t1 = Test() Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Friday 11 September 2009 09:30:42 Kermit Mei wrote: Do this: class Test(object): t1 = Test And this: t1 = Test() That makes an instance and runs the __init__ \d -- home: http://otherwise.relics.co.za/ 2D vector animation : https://savannah.nongnu.org/projects/things/ Font manager : https://savannah.nongnu.org/projects/fontypython/ -- http://mail.python.org/mailman/listinfo/python-list
Getting error while importing Sybase Module in Python
Hi, I have solaris 10 x86 installed. I have installed Sybase module 0.39 on Python2.5. While importing Sybase module. I m getting bellow error.Please suggest. python Python 2.5.1 (r251:54863, May 16 2007, 19:39:00) [GCC 3.4.6] on sunos5 Type help, copyright, credits or license for more information. import Sybase Traceback (most recent call last): File stdin, line 1, in module File build/bdist.solaris-2.10-i86pc/egg/Sybase.py, line 11, in module File build/bdist.solaris-2.10-i86pc/egg/sybasect.py, line 7, in module File build/bdist.solaris-2.10-i86pc/egg/sybasect.py, line 6, in __bootstrap__ ImportError: ld.so.1: python: fatal: relocation error: file /.python- eggs/python_sybase-0.39-py2.5-solaris-2.10-i86pc.egg-tmp/sybasect.so: symbol blk_bind: referenced symbol not found Thanks, Gopal -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Fri, 2009-09-11 at 00:33 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:30 AM, Kermit Mei kermit@gmail.com wrote: Dear all, I'm a newbie for python, and I write a program to test how to implement a class: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test You missed the parentheses to call the constructor. That line should be: t1 = Test() Cheers, Chris Yes, that can run. But If I put the following code into Test.py : #!/usr/bin/env python | | class Test: | 'My Test class' | def __init__(self): | self.arg1 = 1 | | def first(self):| return self.arg1| | def setFirst(self,value = 5): | self.arg1 = value But when I want to run it as a module, something also be wrong: $ python Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41) [GCC 4.3.3] on linux2 Type help, copyright, credits or license for more information. import Test t1 = Test() Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable Thanks Kermit -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Fri, Sep 11, 2009 at 12:40 AM, Kermit Mei kermit@gmail.com wrote: On Fri, 2009-09-11 at 00:33 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:30 AM, Kermit Mei kermit@gmail.com wrote: Dear all, I'm a newbie for python, and I write a program to test how to implement a class: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test You missed the parentheses to call the constructor. That line should be: t1 = Test() Cheers, Chris Yes, that can run. But If I put the following code into Test.py : #!/usr/bin/env python | | class Test: | 'My Test class' | def __init__(self): | self.arg1 = 1 | | def first(self): | return self.arg1 | | def setFirst(self,value = 5): | self.arg1 = value But when I want to run it as a module, something also be wrong: $ python Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41) [GCC 4.3.3] on linux2 Type help, copyright, credits or license for more information. import Test t1 = Test() Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable You've imported the module `Test`, whose name is determined by the filename (Test.py). To access the class of the same name (`Test`) that is defined in the module, you need to use the dot operator: import Test t1 = Test.Test() You should probably use different names for the module/file and the class to avoid confusion. Unlike Java, Python does not observe a direct correspondence between filenames and classes. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: New Tkinter windows don't get focus on OS X
On Sep 11, 9:14 am, Hendrik van Rooyen hend...@microcorp.co.za wrote: On Thursday 10 September 2009 18:19:09 Joshua Bronson wrote: True, but it'll still be a lot less painful for me to test my app if I can get it to steal focus when launched from the command line. If anyone knows how to do this in Tkinter, help would be much appreciated. look for widget.focus_force() and look for widget.grab_set_global() Doesn't work. BTW, forcing the focus or setting the grab globally are usually considered very annoying and I don't know any windowing system or window manager honouring those. For the OP: the problem comes from the tcl/tk level. Running a tcl script just opening a window from the terminal shows the same behaviour. You might want to forward the question to the tcl guys. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Fri, 2009-09-11 at 00:43 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:40 AM, Kermit Mei kermit@gmail.com wrote: On Fri, 2009-09-11 at 00:33 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:30 AM, Kermit Mei kermit@gmail.com wrote: Dear all, I'm a newbie for python, and I write a program to test how to implement a class: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test You missed the parentheses to call the constructor. That line should be: t1 = Test() Cheers, Chris Yes, that can run. But If I put the following code into Test.py : #!/usr/bin/env python | | class Test: | 'My Test class' | def __init__(self): | self.arg1 = 1 | | def first(self):| return self.arg1| | def setFirst(self,value = 5): | self.arg1 = value But when I want to run it as a module, something also be wrong: $ python Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41) [GCC 4.3.3] on linux2 Type help, copyright, credits or license for more information. import Test t1 = Test() Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable You've imported the module `Test`, whose name is determined by the filename (Test.py). To access the class of the same name (`Test`) that is defined in the module, you need to use the dot operator: import Test t1 = Test.Test() You should probably use different names for the module/file and the class to avoid confusion. Unlike Java, Python does not observe a direct correspondence between filenames and classes. Cheers, Chris -- Oh, yep! Thanks, Cheers. Can you tell me how can I write __init__.py for modules: I have a directory like this: $ tree . `-- main |-- MyTestModules | |-- Test1.py | `-- Test2.py `-- main.py 2 directories, 3 files In main.py, I want to run the following code: #!/usr/bin/env python import MyTestModules t1 = Test1() t2 = Test2() print t1.first() print t2.first() ### The classes Test1 and Test2 just be similar with the Test that I showed before. To run main.py correct, how can I orgnize the code under directory MyTestModules. (May need a __init__.py file under MyTestModules, but I don't know how to write it) Thank you,very much! Regards Kermit -- http://mail.python.org/mailman/listinfo/python-list
Re: Q on explicitly calling file.close
En Thu, 10 Sep 2009 08:26:16 -0300, David C. Ullrich dullr...@sprynet.com escribió: On Wed, 9 Sep 2009 15:13:49 -0700 (PDT), r rt8...@gmail.com wrote: On Sep 9, 4:19 pm, Charles Yeomans char...@declaresub.com wrote: I removed the except block because I prefer exceptions to error codes. how will the caller know an exception has occurred? What if logic depends on the validation that a file *had* or *had not* been written too, huh? Oh I see! But what happens if the filename does not exist? What then? open will blow chucks thats what! Here is a version for our paranoid- schizophrenic-sadomasochist out there... Well first, we agree that putting the open() in the try part of a try-finally is wrong. try-finally is supposed to ensure that _allocated_ resources are cleaned up. What you do below may work. But it's essentially throwing out exception handling and using error codes instead. There are plenty of reasons why exceptions are preferred. The standard thing is this: def UseResource(rname): r = get(rname) try: r.use() finally r.cleanup() And it is so widely used that it got its own syntax (the with statement) and library support (contextlib, for creating custom context managers). In any decent version of Python this idiom becomes: with get(rname) as r: r.use assuming get(rname) returns a suitable object (that defines __enter__ and __exit__) def egor_read_file(fname, mode='rb'): print 'yes, master' try: f = open(fname, mode=mode) except IOError: return (0, 'But, the file no open master!') try: s = f.read() except NameError: return (0, 'the file still no open master!') try: f.close() except: print 'That file sure is tricky master! return (s, 'Whew! here is the file contents, master') What's above seems simpler. More important, if you do it this way then you _always_ have to check the return value of egor_read_file and take appropriate action - complicates the code everywhere the function is called as well as making the function more complicated. Doing it as in UseResource() above you don't need to worry about whether UseResource() failed _except_ in situations where you're certain that that's the right level to catch the error. That's the standard argument showing why structured exceptions are a Good Thing. I'd say everyone should be aware of that, giving the ample usage of exceptions in Python, but looks like people requires a reminder from time to time. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: New Tkinter windows don't get focus on OS X
On Friday 11 September 2009 09:53:56 eb303 wrote: On Sep 11, 9:14 am, Hendrik van Rooyen hend...@microcorp.co.za wrote: look for widget.focus_force() and look for widget.grab_set_global() Doesn't work. BTW, forcing the focus or setting the grab globally are usually considered very annoying and I don't know any windowing system or window manager honouring those. I have to confess I have never used the stuff - just remembered seeing it in the manual and pointed it out. What does it do? - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about unpickling dict subclass with custom __setstate__
En Thu, 10 Sep 2009 20:09:34 -0300, Matthew Wilson m...@tplus1.com escribió: I subclassed the dict class and added a __setstate__ method because I want to add some extra steps when I unpickle these entities. This is a toy example of what I am doing: class Entity(dict): def __setstate__(self, d): log.debug(blah...) Based on my experiments, the data in d *IS NOT* the data stored in my instances when I do stuff like: e = Entity() e['a'] = 1 Instead, the stuff in d is the data stored when I do stuff like: e.fibityfoo = 99 Yes. The dict contents are pickled directly; __getstate__ and __setstate__ are related to the instance attributes (fibityfoo), not its contents (a-1). Try defining __reduce__ or __reduce_ex__ instead. Is there anything I have to do to make sure that my real dictionary data is correctly reloaded during the unpickle phase? In other words, should I run super(Entity, self).__setstate__(d) or something like that? That doesn't work, dict.__setstate__ doesn't even exist. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: New Tkinter windows don't get focus on OS X
On Sep 11, 10:40 am, Hendrik van Rooyen hend...@microcorp.co.za wrote: On Friday 11 September 2009 09:53:56 eb303 wrote: On Sep 11, 9:14 am, Hendrik van Rooyen hend...@microcorp.co.za wrote: look for widget.focus_force() and look for widget.grab_set_global() Doesn't work. BTW, forcing the focus or setting the grab globally are usually considered very annoying and I don't know any windowing system or window manager honouring those. I have to confess I have never used the stuff - just remembered seeing it in the manual and pointed it out. What does it do? At tcl level, focus_force() and grab_set_global() are translated as options to the equivalents of focus_set() and grab_set() [1][2]. If these are not honoured, the options are simply ignored. That's what seems to happen on Mac OS X. So focus_force() does the same as focus_set(), and grab_set_global() the same as grab_set(). No use for the OP's problem... [1] http://www.tcl.tk/man/tcl8.5/TkCmd/focus.htm [2] http://www.tcl.tk/man/tcl8.5/TkCmd/grab.htm -- http://mail.python.org/mailman/listinfo/python-list
Re: Python server locks up
On 9 Sep, 22:28, Zac Burns zac...@gmail.com wrote: Theories: Python is resizing the large dictionary Python is garbage collecting Python uses reference counting, not a generational GC like Java. A Python object is destroyed when the refcount drops to 0. The GC only collects cyclic references. If you create none, there are no GC delays (you can in fact safely turn the GC off). Python does not share Java's nasty habit of having long GC delays. -- http://mail.python.org/mailman/listinfo/python-list
How can I use my modules here?
Hello community!
I write a modules for testing, and my code is like this(under Linux):
$ tree
.
|-- MyTestModules
| |-- Test1.py
| |-- Test2.py
| `-- __init__.py
`-- main.py
1 directory, 4 files
$ find . -name '*.py' -print0|xargs -0 cat
main.py Begin ##
#!/usr/bin/env python
from MyTestModules import Test1,Test2
t1 = Test1()
t2 = Test2()
print t1.first()
print t2.first()
main.py End ###
#Test1.py Begin ##
#!/usr/bin/env python
class Test1:
def first(self):
return self.arg1
#Test1.py End
#Test1.py Begin ##
#!/usr/bin/env python
class Test2:
def first(self):
return self.arg1
#Test1.py End
## __init__.py Begin
#!/usr/bin/env python
## __init__.py End
When I run the main.py, the following error takes:
$ ./main.py
from: can't read /var/mail/MyTestModules
./main.py: line 7: syntax error near unexpected token `('
./main.py: line 7: `t1 = Test1()'
Waiting for your help.
Thanks.
Best Regards
Kermit Mei
--
http://mail.python.org/mailman/listinfo/python-list
Re: How can I use my modules here?
On Fri, Sep 11, 2009 at 2:24 AM, Kermit Mei kermit@gmail.com wrote:
Hello community!
I write a modules for testing, and my code is like this(under Linux):
$ tree
.
|-- MyTestModules
| |-- Test1.py
| |-- Test2.py
| `-- __init__.py
`-- main.py
1 directory, 4 files
$ find . -name '*.py' -print0|xargs -0 cat
main.py Begin ##
#!/usr/bin/env python
from MyTestModules import Test1,Test2
t1 = Test1()
t2 = Test2()
print t1.first()
print t2.first()
main.py End ###
#Test1.py Begin ##
#!/usr/bin/env python
class Test1:
def first(self):
return self.arg1
#Test1.py End
#Test1.py Begin ##
#!/usr/bin/env python
class Test2:
def first(self):
return self.arg1
#Test1.py End
## __init__.py Begin
#!/usr/bin/env python
## __init__.py End
When I run the main.py, the following error takes:
$ ./main.py
from: can't read /var/mail/MyTestModules
./main.py: line 7: syntax error near unexpected token `('
./main.py: line 7: `t1 = Test1()'
For some reason, your Python program is being executed by bash as if
it were a shell script, which it's not.
No idea what the cause is though.
Cheers,
Chris
--
http://blog.rebertia.com
--
http://mail.python.org/mailman/listinfo/python-list
Re: Accessing objects at runtime.
In article 228b-379d-4fe4-956b-cf803541a...@37g2000yqm.googlegroups.com, jacopo jacopo.pe...@gmail.com wrote: I have a system comprising many objects cooperating with each others. (For the time being, everything is running on the same machine, in the same process but things might change in the future). The system starts a infinite loop which keeps triggering operations from the instantiated objects. I would like to find a way to inspect the objects at run time. In other words I would like to check certain attributes in order to understand in which status the object is. This of course without having to stop the system and resume it after the checking is finished. You might consider running a BaseHTTPServer in a separate thread which has references to your objects of interest and exporting the data through a web interface. Using a RESTful approach for mapping URLs to objects within your system, a basic export of the data can be as simple as printing out HTML strings with interpolated data. (I recently did this in a couple hundred lines of code for a small example handling a few resource types.) Fancier solutions could pull in any of the freely available template engines or other web framework pieces. When you move to different processes and/or machines, the access method can remain the same by varying the port and/or hostname in the URL. Good luck... Gary Duzan Motorola HNM -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
Kermit Mei wrote: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test 't1' is now an alternative name for 'Test'. What you wanted instead was to instantiate 'Test', which you do with this syntax: t1 = Test() print t1.first() 't1.first' or 'Test.first' is a function that takes a single argument (by convention, that should be an instance of 'Test'). However, no such instance is provided: TypeError: unbound method first() must be called with Test instance as first argument (got nothing instead) Note that you can invoke the 'first' function in two ways: t1.first() Test.first(t1) Uli -- Sator Laser GmbH Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932 -- http://mail.python.org/mailman/listinfo/python-list
Re: Rapid GUI Programming with Python and Qt source code
On Thu, Sep 10, 2009 at 10:18 PM, David Boddie dbod...@trolltech.comwrote: On Thursday 10 September 2009, Steven Woody wrote: On Wed, Sep 9, 2009 at 9:33 PM, David Boddie dbod...@trolltech.com wrote: See this page for the links: http://www.qtrac.eu/pyqtbook.html but the URL is not reachable from here. is there another URL? thanks. Can't you access anything from qtrac.eu from where you are? Here are two links to archives for the Python 2.6 versions of the examples: http://www.qtrac.eu/pyqtbook26.tar.gz http://www.qtrac.eu/pyqtbook26.zip If you can't reach those, maybe Mark will send you the examples directly. David Hi, Mark David I don't know the reason, but from here the site www.qtrac.eu is totally unreachable. So, would you please send me a file directly? Thanks you very much! -- Life is the only flaw in an otherwise perfect nonexistence -- Schopenhauer narke public key at http://subkeys.pgp.net:11371 (narkewo...@gmail.com) -- http://mail.python.org/mailman/listinfo/python-list
Python 3.1 csv with gzip
Python 3.1.1 doesn't seem to be happy with the use of gzip.open with csv.reader. Using this: import gzip, csv, sys data = csv.reader(gzip.open(sys.argv[1])) for row in data: print(row) Will give this: Traceback (most recent call last): File ./a.py, line 6, in module for row in data: _csv.Error: iterator should return strings, not bytes (did you open the file in text mode?) My work around is: import gzip, csv, sys def gziptext(filename): for line in gzip.open(filename): yield str(line, 'ascii') data = csv.reader(gziptext(sys.argv[1])) for row in data: print(row) -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I use my modules here?
On Fri, 2009-09-11 at 02:29 -0700, Chris Rebert wrote: For some reason, your Python program is being executed by bash as if it were a shell script, which it's not. No idea what the cause is though. Because the first 2 bytes of the file need to be #!/path/to/interpreter, the OP has: main.py Begin ## This won't work. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why can't I run this test class?
On Fri, Sep 11, 2009 at 4:01 AM, Kermit Mei kermit@gmail.com wrote: On Fri, 2009-09-11 at 00:43 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:40 AM, Kermit Mei kermit@gmail.com wrote: On Fri, 2009-09-11 at 00:33 -0700, Chris Rebert wrote: On Fri, Sep 11, 2009 at 12:30 AM, Kermit Mei kermit@gmail.com wrote: Dear all, I'm a newbie for python, and I write a program to test how to implement a class: #!/usr/bin/env python class Test: 'My Test class' def __init__(self): self.arg1 = 1 def first(self): return self.arg1 t1 = Test You missed the parentheses to call the constructor. That line should be: t1 = Test() Cheers, Chris Yes, that can run. But If I put the following code into Test.py : #!/usr/bin/env python | | class Test: | 'My Test class' | def __init__(self): | self.arg1 = 1 | | def first(self):| return self.arg1| | def setFirst(self,value = 5): | self.arg1 = value But when I want to run it as a module, something also be wrong: $ python Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41) [GCC 4.3.3] on linux2 Type help, copyright, credits or license for more information. import Test t1 = Test() Traceback (most recent call last): File stdin, line 1, in module TypeError: 'module' object is not callable You've imported the module `Test`, whose name is determined by the filename (Test.py). To access the class of the same name (`Test`) that is defined in the module, you need to use the dot operator: import Test t1 = Test.Test() You should probably use different names for the module/file and the class to avoid confusion. Unlike Java, Python does not observe a direct correspondence between filenames and classes. Cheers, Chris -- Oh, yep! Thanks, Cheers. Can you tell me how can I write __init__.py for modules: I have a directory like this: $ tree . `-- main |-- MyTestModules | |-- Test1.py | `-- Test2.py `-- main.py 2 directories, 3 files In main.py, I want to run the following code: #!/usr/bin/env python import MyTestModules t1 = Test1() t2 = Test2() print t1.first() print t2.first() ### The classes Test1 and Test2 just be similar with the Test that I showed before. To run main.py correct, how can I orgnize the code under directory MyTestModules. (May need a __init__.py file under MyTestModules, but I don't know how to write it) Thank you,very much! Regards Kermit Just make a blank file called __init__.py in MyTestModules. That's all you need. Then, in main.py, you need to either do import MyImportModules.Test1 t1 = MyImportModules.Test1.Test1() or from MyImportModules.Test1 import Test1 t1 = Test1() Unlike C++ and Java, an import in Python does not make the other module's stuff available in the local namespace. You only have the one extra name (the name of the module) and everything else is stored in there. If you want to add the new module's stuff to the local namespace, you have to do the from ... import This is also why you shouldn't make a separate file for every class. You could put both Test1 and Test2 into a file called test.py (module names in Python are usually lowercase) and then do from MyImportModules.test import Test1, Test2 -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I use my modules here?
On Fri, 2009-09-11 at 07:48 -0400, Albert Hopkins wrote: On Fri, 2009-09-11 at 02:29 -0700, Chris Rebert wrote: For some reason, your Python program is being executed by bash as if it were a shell script, which it's not. No idea what the cause is though. Because the first 2 bytes of the file need to be #!/path/to/interpreter, the OP has: main.py Begin ## This won't work. Yep, Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Download and save a picture - urllib
Hi all, in order to download an image. In order to correctly retrieve the image I need to set the referer and handle cookies. opener = urllib.request.build_opener(urllib.request.HTTPRedirectHandler (), urllib.request.HTTPCookieProcessor()) urllib.request.install_opener(opener) req = urllib.request.Request(http://myurl/image.jpg;) req.add_header(Referer, http://myulr/referer.jsp;) r = urllib.request.urlopen(req) with open(image.jpg, w ) as fd: print(r.read(), file=fd) I'm not able to correctly save the image. In fact it seems that it it saved in hex format. Any suggestion? -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with cumulative sum
Maggie la.f...@gmail.com writes: [...] else: print 'The loop is finito' do you know of it.comp.lang.python? -- Sarebbe essere un atto di pieta'. Contro i miei principi.-- whip, in IFMdI -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE for python similar to visual basic
On Mon, 07 Sep 2009 23:56:17 +, Albert van der Horst wrote: The main advantage of a GUI builder is that it helps prevent you from hard-coding the GUI into the program. You could get the same effect by coding a UIL/XRC/etc file manually, but a GUI builder tends to force it. A GUI builder results in hard coding the GUI. The code only resides elsewhere. Data (e.g. a UIL or XRC file) isn't code. But hard-coding is more a question of whether you can realistically change the data without changing the code. If the code craps out due to minor changes to the data, there isn't much advantage of having a separate data file. Creating a GUI programmatically is almost always the wrong approach. It tends to be adopted due to a path of least resistance, rather than any affirmative reason. In view of the above this is not quite the correct way to put it. What I resent is that it leads to a non-professional attitude of the graphical part. Programming is over, lets now kludge some screens together. No. The graphics part has to be carefully designed, carefully tested, and carefully written, even if it is using a graphical tool. So, yes please, *do* create a GUI programmatically. My view is that the program should provide functionality without unnecessarily dictating the way in which that functionality is used. Essentially, it's an issue of loose coupling. The interface really should be configurable by the user according to their needs. The code doesn't need to *know* the position or dimensions of a widget, or its label or colour or spacing, let alone dictate them. In most cases, the code shouldn't even get to dictate that specific widgets even exist. Rather, it should provide actions which can be bound to buttons, menu items and/or accelerators as the user chooses. -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE for python similar to visual basic
On Mon, 07 Sep 2009 18:04:40 -0700, r wrote: It also allows the GUI to be edited by without requiring any programming knowledge. This eliminates the need for the GUI designer to be familiar with the programming language used (or any programming language), and allows customisation by end users. and this is why M$ interfaces suck eggs! This whole let's just slap together something that works even if kludgy attitude begets the horrible UI's of which i speak. Are you saying that programmers have no ability to design elegant UI's? Or are you saying GUI's are not *that* important? I'm saying that the user understands their workflow and environment better than the application's programmers. The user should be able to decide which menu items are shown and where, which buttons are shown and where, etc. The code doesn't need to know this level of detail, let alone dictate it. -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE for python similar to visual basic
On Sep 11, 7:08 am, Nobody nob...@nowhere.com wrote: (snip) I'm saying that the user understands their workflow and environment better than the application's programmers. The user should be able to decide which menu items are shown and where, which buttons are shown and where, etc. The code doesn't need to know this level of detail, let alone dictate it. I completely disagree with this idea of user customization of the GUI. Sounds more like adolescent accessorizing to me. How is changing the location of a button, or entry, or whatever, actually going to make workflow more easier? Sounds like somebody failed to get input from their users at design time. Or somebody has the inability to relate to their end users. However i know some out there like the styles and skins crap, which is a different animal altogether than what you speak of. Would a mechanic give you a screw driver so you could adjust the fuel/ air ratio yourself? If he did i would never take my car back again! Just reeks of incompetence!! Only qualified persons should fix cars, same for software! -- http://mail.python.org/mailman/listinfo/python-list
ANN: warehouse Objects in SQLite : y_serial module
Module download at SourceForge http://yserial.sourceforge.net Serialization + persistance :: in a few lines of code, compress and annotate Python objects into SQLite; then later retrieve them chronologically by keywords without any SQL. Most useful standard module for a database to store schema-less data. The module is instructive in the way it unifies the standard batteries: sqlite3 (as of Python v2.5), zlib (for compression), and cPickle (for serializing objects). If your Python program requires data persistance, then y_serial is a module which should be worth importing. All objects are warehoused in a single database file in the most compressed form possible. Tables are used to differentiate projects. Steps for insertion, organization by annotation, and finally retrieval are amazingly simple... y_serial.py module :: warehouse Python objects with SQLite http://yserial.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
Re: IDE for python similar to visual basic
The interface really should be configurable by the user according to their needs. The code doesn't need to *know* the position or dimensions of a widget, or its label or colour or spacing, let alone dictate them. Perhaps...but the user needs a framework in order to understand the functions they find themselves in charge of once they've initiated a program. As the designer, the programmer is best placed to provide that framework, because they know, or they should know, what it is (something I don't think can be taken for granted). Therefore, fundamental decisions about the UI should be left to the programmer. If customisation is possible, all well and good, but it should not be the main goal of a UI. Usability principles should be. In most cases, the code shouldn't even get to dictate that specific widgets even exist. Rather, it should provide actions which can be bound to buttons, menu items and/or accelerators as the user chooses. That would be an API. -- http://mail.python.org/mailman/listinfo/python-list
Re: An assessment of the Unicode standard
On Sep 10, 8:43 pm, Jan Claeys use...@janc.be wrote:
Maybe we should use a language that has a Turing-complete grammar, so
that even computers can understand speak it easily?
Interesting, i do find some things more easily explainable using code,
however, code losses the ability to describe abstract ideas and such.
But you have piqued my interest...?
--
def get_enlightened():
import webbrowser
webbrowser.open('http://jjsenlightenments.blogspot.com/')
--
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Re: IDE for python similar to visual basic
r wrote: On Sep 11, 7:08 am, Nobody nob...@nowhere.com wrote: (snip) I'm saying that the user understands their workflow and environment better than the application's programmers. The user should be able to decide which menu items are shown and where, which buttons are shown and where, etc. The code doesn't need to know this level of detail, let alone dictate it. I completely disagree with this idea of user customization of the GUI. Sounds more like adolescent accessorizing to me. How is changing the location of a button, or entry, or whatever, actually going to make workflow more easier? Sounds like somebody failed to get input from their users at design time. Or somebody has the inability to relate to their end users. However i know some out there like the styles and skins crap, which is a different animal altogether than what you speak of. Would a mechanic give you a screw driver so you could adjust the fuel/ air ratio yourself? If he did i would never take my car back again! Just reeks of incompetence!! Only qualified persons should fix cars, same for software! Speaking for backyard mechanics everywhere, I sometimes want the screwdriver. :-) --David -- http://mail.python.org/mailman/listinfo/python-list
Re: Python 3.1 csv with gzip
dryfish wrote: Python 3.1.1 doesn't seem to be happy with the use of gzip.open with csv.reader. Using this: import gzip, csv, sys data = csv.reader(gzip.open(sys.argv[1])) for row in data: print(row) Will give this: Traceback (most recent call last): File ./a.py, line 6, in module for row in data: _csv.Error: iterator should return strings, not bytes (did you open the file in text mode?) See codecs.EncodedFile(). Stefan -- http://mail.python.org/mailman/listinfo/python-list
Execution order
Here is some code from a pyqt4.5.4 application on python 2.6
def findData(self):
self.ui.label.setText('Processing... ')
# here we do something which takes a few seconds
self.refreshGrid()
The problem is that the text in the self.ui.label is only changed
on screen after the self.refreshGrid() has finished executing
rather than before.
How do I achieve the expected result ?
Thanks
Db
--
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Iterating Through Dictionary of Lists
I have created a small program that generates a project tree from a
dictionary. The dictionary is of key/value pairs where each key is a
directory, and each value is a list. The list have unique values
corresponding to the key, which is a directory where each value in the
list becomes a subdirectory.
The question that I have is how to do this process if one of the
unique values in the list is itself a dict. For example, in the
projdir dict below, suppose the Analysis value in the list
corresponding to the Engineering key was itself a dict and was
assigned {'Analysis' : 'Simulink'} for example.
Thanks.
James
#-
# DEFINE Root Dir Path, Sch Numbers
#-
sch_names = ['AED500','AED600']
dir_main = Z:\\ABC_PROJ\\
dir_sub = PCB_MDX\\
rootdir = dir_main + dir_sub
#-
# DEFINE Directory Tree for Project
#-
projdir = {'Project': ['Schedule', 'Specifications',
'Procedures'],
'Schematics_PCB' : ['SCH','BOM','ASSY'],
'Drawings' : ['System', 'Board', 'Packaging_3D'],
'Engineering': ['Analysis', 'Reports', 'Design Reviews']}
#-
# DEFINE Debug Status
#-
debug = True
#-
# Print Directory Path (Helper Func)
#-
def print_path(z,suffix):
print z
print z + suffix
#-
# Make a Directory Project Tree
#-
def make_tree_with_debug(proj,sch,root):
counter = 0
print The dictionary was found to have the following: \n
#-
# Iterate over items in the dictionary, creating tuples of key/value
pairs
#-
for key, values in proj.iteritems():
counter = counter + 1
print Key # + str(counter) + is + ' + key + \'
print For this key, the values are + str(values)
print Thus, the results of generating directories for this key/
values combo are: \n
#-
# Iterate over the invidividual unique values in the list
# that is associated with each key in the dict
#-
for unique in values:
prefix = root + key + \\ + unique
suffix = \\Previous \n
if key == 'Schematics_PCB':
print unique
for item in sch:
z = prefix + \\ + item
print_path(z,suffix)
else:
#if unique.haskeys():
# print unique.key
z = prefix
print_path(z,suffix)
make_tree_with_debug(projdir,sch_names,rootdir)
--
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Re: IDE for python similar to visual basic
On 8/30/09 1:48 PM, r wrote: Hello qwenbsp;rty, I remember my first days with GUI programming and thinking to myself; how on earth can i write GUI code without a MS style GUI builder? Not to long after that i was coding up some pretty spectacular GUI's from nothing more than source code and loving it. [Warning: the following is only opinion!] I think a point and click GUI builder (although some may disagree) is actually detrimental to your programming skills. The ability to visualize the GUI only from the source code as you read it, is as important to a programmer as site reading sheet music is to a musician. And I like to program with the training wheels off. Whether done in code or with a visual tool, good, effective GUI design is not easy. However you get there is up to you. In my case (using Tkinter), I've found that it's faster and better to write the code by hand. Code in the text editor, the terminal for testing: simple and easy. Adding another tool to the mix just makes things more complicated. :-) Some may find it's easier to use a GUI builder, and if that's the case, some good ones have been recommended. shameless plug In case anyone thinks the words Tkinter and good, effective GUI design shouldn't be in the same paragraph, please see http://www.codebykevin.com/phynchronicity.html... /shameless plug -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Execution order
DarkBlue wrote:
Here is some code from a pyqt4.5.4 application on python 2.6
def findData(self):
self.ui.label.setText('Processing... ')
# here we do something which takes a few seconds
self.refreshGrid()
The problem is that the text in the self.ui.label is only changed
on screen after the self.refreshGrid() has finished executing
rather than before.
How do I achieve the expected result ?
You can make Qt process all pending events once, via
QCoreApplication.processEvents.
This should trigger the redraw.
Diez
--
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Re: Iterating Through Dictionary of Lists
JB wrote:
I have created a small program that generates a project tree from a
dictionary. The dictionary is of key/value pairs where each key is a
directory, and each value is a list. The list have unique values
corresponding to the key, which is a directory where each value in the
list becomes a subdirectory.
The question that I have is how to do this process if one of the
unique values in the list is itself a dict. For example, in the
projdir dict below, suppose the Analysis value in the list
corresponding to the Engineering key was itself a dict and was
assigned {'Analysis' : 'Simulink'} for example.
You might want to read up on recursion, i.e. a function calling itself.
You can find out if something is a dict like this:
isinstance(x, dict)
or, if you know it really is a dict and not a subtype:
type(x) is dict
Stefan
--
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Re: Some issue with easy_install and PIL/Imaging
Klein Stéphane wrote: Resume : 1. first question : why PIL package in pypi don't work ? Because Fred Lundh have his package distributions unfortunate names that setuptools doesn't like... 2. second question : when I add PIL dependence in my setup.py and I do python setup.py develop, I've this error : error: Could not find required distribution Imaging. Why ? See above. Now, I add --find-links parameter to easy_install : If you google harder, you'll find there are packagings of PIL that do work with setuptools... Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Execution order
On Sep 11, 9:34 pm, Diez B. Roggisch de...@nospam.web.de wrote:
DarkBlue wrote:
Here is some code from a pyqt4.5.4 application on python 2.6
def findData(self):
self.ui.label.setText('Processing... ')
# here we do something which takes a few seconds
self.refreshGrid()
The problem is that the text in the self.ui.label is only changed
on screen after the self.refreshGrid() has finished executing
rather than before.
How do I achieve the expected result ?
You can make Qt process all pending events once, via
QCoreApplication.processEvents.
This should trigger the redraw.
Diez
Thanks ! That helped. :)
--
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Re: urlopen error (11001, 'getaddrinfo failed')
open...@hushmail.com wrote:
fs = cgi.FieldStorage()
url = fs.getvalue('url', http://www.openlayers.org;)
try:
insert a print url here...
y = urllib2.urlopen(url)
print y.read()
This script produces the urlopen error (11001, 'getaddrinfo
failed').
This is a name lookup failing, whatever you're ending up with in url is
either incorrect or the dns config of the server it's pointing at is
incorrect...
Chris
--
Simplistix - Content Management, Batch Processing Python Consulting
- http://www.simplistix.co.uk
--
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Re: HTTP POST File without cURL
Is there a verbose feature for urllib2.urlopen?
Here is my python snippet for posted the file:
req = urllib2.Request(url='https://%s%s' % (host, selector),
data=open('test.zip', 'rb').read())
req.add_header('content-type', 'application/zip')
req.add_header('Authorization', 'Basic %s' % self.auth)
#req.add_header('content-length', str(len(body)))
print req.headers
u = urllib2.urlopen(req)
--
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Podcast catcher in Python
Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
Also, if anyone could recommend some books that cover this type of programming, I would greatly appreciate it. Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Use python to execute a windows program
Dear list: My question is conceptual at the moment. Current problem: I have a windows-based program that reads in a file and from that file generates data that is saved to a file. The way we do this now is a person sits in front of their machine and proceeds as follows: 1) Open windows program 2) Click file - open which opens a dialog box 3) Locate the file (which is a text file) click on it and let the program run. This would be no problem if we did this for a small number of files. But, we repeat this process for a few hundred files. So, the human is sitting in front of the machine repeating this process for days until we have all data generated. Question: Is it possible to write a python script that would automate this process such that it could interact with the windows program, loop through all of the text files in a directory rather than the human repeating this process for days. I have sued python quite a bit to parse XML and text files, but I have never used it such that it would interact with a program designed to work in windows. So, I'm not sure if such a problem is conceptually possible. I wish I could provide minimal commented code, but I am not sure where to even start with this problem other than to first ask if it is conceptually possible. -- http://mail.python.org/mailman/listinfo/python-list
Re: Use python to execute a windows program
2009/9/11 Doran, Harold hdo...@air.org: The way we do this now is a person sits in front of their machine and proceeds as follows: 1) Open windows program 2) Click file - open which opens a dialog box 3) Locate the file (which is a text file) click on it and let the program run. It might very well be possible, depending upon how the program you want to automate has been written. First, make sure, absolutely sure, that's there's no proper automation option available - a command line version, COM automation, that kind of thing. These approaches are very much easier than GUI automation. If none of these options are available, http://pywinauto.openqa.org/ is probably what you need. -- Cheers, Simon B. -- http://mail.python.org/mailman/listinfo/python-list
how to return value from button clicked by python
Hi, I have several buttons, I want to realize: when I click first button, the button will call a function, and the function should return some parameter value, because I need this value for the other buttons. I tried the button.invoke() function, it almost got it...however, I only want it returns value when the button clicked, but because the program is in the class _ini_ function, so it always runs once before I click the button... Any one can give me some suggestions? My scripts is like this: def call1(): return para def app(): ... class GUI(): def __init__(self,parent = None): B1 = Button(self.master, text ='browse...', command = call1) B1.grid(row=len(self.user_input_index),column = 3,sticky=W) print self.B1.invoke() call2 = lambda: app(self.B1.invoke()) B2 = Button(self.master, text ='browse...',command = call2) -- http://mail.python.org/mailman/listinfo/python-list
Message box always appears on 2nd monitor
No matter what I do, the MessageBox always appears on the 2nd monitor. I've forced all the other widgets to monitor 1. I thought that creating a class and forcing the position would help, but it hasn't. I'm using Ubuntu Jaunty, python 2.6. Any ideas what I can do to force widgets to a specific monitor? Thank you. class ConnectErrorMsgBox( wx.Frame ): def __init__( self ): wx.Frame.__init__(self,None, -1, '', pos=(0,0) ) self.SetPosition( (0, 0) ) wx.MessageBox(message='Connect Error', caption='Status', style=wx.OK | wx.ICON_EXCLAMATION| wx.CENTER, x=0, y=0) -- http://mail.python.org/mailman/listinfo/python-list
Re: [Guppy-pe-list] An iteration idiom (Was: Re: loading files containing multiple dumps)
Sverker Nilsson wrote: If you just use heap(), and only want total memory not relative to a reference point, you can just use hpy() directly. So rather than: CASE 1: h=hpy() h.heap().dump(...) #other code, the data internal to h is still around h.heap().dump(...) you'd do: CASE 2: hpy().heap().dump(...) #other code. No data from Heapy is hanging around hpy().heap().dump(...) The difference is that in case 1, the second call to heap() could reuse the internal data in h, But that internal data would have to hang around, right? (which might, in itself, cause memory problems?) whereas in case 2, it would have to be recreated which would take longer time. (The data would be such things as the dictionary owner map.) How long is longer? Do you have any metrics that would help make good decisions about when to keep a hpy() instance around and when it's best to save memory? Do you mean we should actually _remove_ features to create a new standalone system? Absolutely, why provide more than is used or needed? How should we understand this? Should we have to support 2 or more systems depending on what functionality you happen to need? Or do you mean most functionality is actually _never_ used by _anybody_ (and will not be in the future)? That would be quite gross wouldn't it. I'm saying have one project and dump all the excess stuff that no-one but you uses ;-) Or, maybe easier, have a core, separate, package that just has the essentials in a simply, clean fashion and then another package that builds on this to add all the other stuff... It also gives as an alternative, If this is not possible, a string of the form ...some useful description... should be returned The __repr__ I use don't have the enclosing , granted, maybe I missed this or it wasn't in the docs in 2005 or I didn't think it was important (still don't) but was that really what the complain was about? No, it was about the fact that when I do repr(something_from_heapy) I get a shedload of text. I thought it was more useful to actually get information of what was contained in the object directly at the prompt, than try to show how to recreate it which wasn't possible anyway. Agreed, but I think the stuff you currently have in __repr__ would be better placed in its own method: heap() IdentitySet object at 0x containing 10 items _.show() ... all the current __repr__ output That should have another name... I don't know what a partition or equivalence order are in the contexts you're using them, but I do know that hijacking __getitem__ for this is wrong. Opinions may differ, I'd say one can in principle never 'know' if such a thing is 'right' or 'wrong', but that gets us into philosophical territory. Anyway... I would bet that if you asked 100 experienced python programmers, most of them would tell you that what you're doing with __getitem__ is wrong, some might even say evil ;-) To get a tutorial provided by someone who did not seem to share your conviction about indexing, but seemed to regard the way Heapy does it natural (although has other valid complaints, though it is somewhat outdated i.e. wrt 64 bit) see: http://www.pkgcore.org/trac/pkgcore/doc/dev-notes/heapy.rst This link has become broken recently, but I don't remember reading the author's comments as liking the indexing stuff... Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. ~G -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple inheritance - How to call method_x in InheritedBaseB from method_x in InheritedBaseA?
The Music Guy wrote: ... def main(): ... class MyMixin(object): This is a mistake. If Mixins inherit from CommonBase as well, no order of class definition can catch you out. If it doesn't, you can get yourself in trouble. def method_x(self, a, b, c): super(MyMixin, self).method_x(a, b, c) print MyMixin.method_x(%s, %s, %s, %s) % (repr(self), repr(a), repr(b), repr(c)) class CommonBase(object): def method_x(self, a, b, c): print CommonBase.method_x(%s, %s, %s, %s) % (repr(self), repr(a), repr(b), repr(c)) class BaseA(CommonBase): ... Redoing this example for small prints: def main(): for n, class_ in enumerate( (BaseA, BaseB, BaseC, FooV, FooW, FooX, FooY, FooZ, BarW, BarX, BarY, BarZ)): instance = class_() instance.method_x(n, n * '-', hex(n*13)) print class CommonBase(object): def method_x(self, a, b, c): # really, %r is the way to go. print CommonBase.method_x(%r, %r, %r, %r) % (self, a, b, c) def __repr__(self): # Just so we have a more compact repr return '%s.%s' % (self.__class__.__name__, id(self)) class Mixin(CommonBase): def method_x(self, a, b, c): super(Mixin, self).method_x(a, b, c) print Mixin, class MyMixin(CommonBase): def method_x(self, a, b, c): super(MyMixin, self).method_x(a, b, c) print MyMixin, class BaseA(CommonBase): def method_x(self, a, b, c): super(BaseA, self).method_x(a, b, c) print BaseA, class BaseB(CommonBase): def method_x(self, a, b, c): super(BaseB, self).method_x(a, b, c) print BaseB, class BaseC(CommonBase): pass class FooV(Mixin, BaseA): def method_x(self, a, b, c): super(FooV, self).method_x(a, b, c) print FooV, class FooW(Mixin, MyMixin, BaseA): def method_x(self, a, b, c): super(FooW, self).method_x(a, b, c) print FooW, class FooX(MyMixin, BaseA): def method_x(self, a, b, c): super(FooX, self).method_x(a, b, c) print FooX, class FooY(MyMixin, BaseB): pass class FooZ(MyMixin, BaseC): def method_x(self, a, b, c): super(FooZ, self).method_x(a, b, c) print FooZ, class BarW(Mixin, BaseA, MyMixin): def method_x(self, a, b, c): super(BarW, self).method_x(a, b, c) print BarW, class BarX(BaseA, MyMixin): def method_x(self, a, b, c): super(BarX, self).method_x(a, b, c) print BarX, class BarY(BaseB, MyMixin): def method_x(self, a, b, c): super(BarY, self).method_x(a, b, c) print BarY, class BarZ(BaseB, Mixin): def method_x(self, a, b, c): super(BarZ, self).method_x(a, b, c) print BarZ, main() # prints CommonBase.method_x(BaseA.18591280, 0, '', '0x0') BaseA ... CommonBase.method_x(FooZ.18478384, 7, '---', '0x5b') MyMixin FooZ CommonBase.method_x(BarW.18480592, 8, '', '0x68') MyMixin BaseA Mixin BarW ... If you make of Mixin and MyMixin inherit from object you get: CommonBase.method_x(BaseA.18613328, 0, '', '0x0') BaseA ... CommonBase.method_x(FooZ.18480592, 7, '---', '0x5b') MyMixin FooZ CommonBase.method_x(BarW.18591280, 8, '', '0x68') BaseA Mixin BarW ... Note that in the BarW case (with object), not all mixins are called. --Scott David Daniels scott.dani...@acm.org -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I use my modules here?
Chris Rebert wrote:
On Fri, Sep 11, 2009 at 2:24 AM, Kermit Mei kermit@gmail.com wrote:
Hello community!
I write a modules for testing, and my code is like this(under Linux):
$ tree
.
|-- MyTestModules
| |-- Test1.py
| |-- Test2.py
| `-- __init__.py
`-- main.py
1 directory, 4 files
$ find . -name '*.py' -print0|xargs -0 cat
main.py Begin ##
#!/usr/bin/env python
from MyTestModules import Test1,Test2
t1 = Test1()
t2 = Test2()
print t1.first()
print t2.first()
main.py End ###
#Test1.py Begin ##
#!/usr/bin/env python
class Test1:
def first(self):
return self.arg1
#Test1.py End
#Test1.py Begin ##
#!/usr/bin/env python
class Test2:
def first(self):
return self.arg1
#Test1.py End
## __init__.py Begin
#!/usr/bin/env python
## __init__.py End
When I run the main.py, the following error takes:
$ ./main.py
from: can't read /var/mail/MyTestModules
./main.py: line 7: syntax error near unexpected token `('
./main.py: line 7: `t1 = Test1()'
For some reason, your Python program is being executed by bash as if
it were a shell script, which it's not.
No idea what the cause is though.
The first comment line must go - it must be the shebang instead.
http://en.wikipedia.org/wiki/Shebang_(Unix)
Diez
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string interpolation mystery in Python 2.6
MYSTERY: how can %s%error be different from %s%str(error) in Python 2.6?
APOLOGY: I tried to strip this down, but could not find a simple way to
reproduce the problem. This way works, however. (There is a discussion on
the docutils-develop list.) Although there are several steps, we are talking
about less than 5 minutes to document the puzzle. Please use the specific
revision (or earlier) in the directions, as later revisions implement a
work around.
1. Check out revision 6121 from docutils
http://docutils.sourceforge.net/docs/dev/repository.html
2. Install docutils under Python 2.6
3. Process the file below [1]_ using the rst2html.py script
(found in Python26/Scripts on Windows platforms)
4. Note the IOError::
temp.rst:: (SEVERE/4) Problems with include directive path:
IOError: (2, 'No such file or directory').
Exiting due to level-4 (SEVERE) system message.
5. Make the following change and *no other* changes:
In docutils/parsers/rst/directives/misc.py (line 66-67) change ::
raise self.severe('Problems with %s directive path:\n%s: %s.'
% (self.name, error.__class__.__name__, error))
to ::
raise self.severe('Problems with %s directive path:\n%s: %s.'
% (self.name, error.__class__.__name__,
str(error)))
6. Process the same file the same way. Note the change in the IOError::
temp.rst:: (SEVERE/4) Problems with include directive path:
IOError: [Errno 2] No such file or directory: 'doesnotexist.rst'.
Exiting due to level-4 (SEVERE) system message.
7. Try this again in Python 2.5. The correct (filename reported) error report
is produced both times. So this is a Python 2.6 change.
Clues? Bug or feature?
I'm going to hazard a guess that there was an undocumented (in What's New)
change
to the __unicode__ method of BaseException.
Thanks,
Alan Isaac
.. [1] Following is the rst file to process:
Test
This is just a test.
.. include:: doesnotexist.rst
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Re: Use python to execute a windows program
Does the Windows application offer a COM interface? http://oreilly.com/catalog/pythonwin32/chapter/ch12.html http://sourceforge.net/projects/pywin32/ Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: Message box always appears on 2nd monitor
On Sep 11, 8:27 am, ed e...@nospam.net wrote: No matter what I do, the MessageBox always appears on the 2nd monitor. I've forced all the other widgets to monitor 1. I thought that creating a class and forcing the position would help, but it hasn't. I'm using Ubuntu Jaunty, python 2.6. Any ideas what I can do to force widgets to a specific monitor? Thank you. class ConnectErrorMsgBox( wx.Frame ): def __init__( self ): wx.Frame.__init__(self,None, -1, '', pos=(0,0) ) self.SetPosition( (0, 0) ) wx.MessageBox(message='Connect Error', caption='Status', style=wx.OK | wx.ICON_EXCLAMATION| wx.CENTER, x=0, y=0) Did you try making the message box a child of whatever window called it? ie. Pass in the parent= attribute. ~Sean -- http://mail.python.org/mailman/listinfo/python-list
Problem with the inclusion of new files like lxml, django, numpy, etc.
Dear Group, I am trying to download the following files, a) lxml, b) numpy, c) scipy, and d) django. I am trying to include them in C\python26\Lib But they are giving error report, as I am trying to use them by importing. I am using IDLE as GUI, my OS is WinXP SP2, and my Python version 2.6. If any one suggest what is the problem, I am doing? Best Regards, Subhabrata -- http://mail.python.org/mailman/listinfo/python-list
RE: Use python to execute a windows program
I am working with this now. I'm toying with the examples to test out a few things and learn how this works. I've made some modifications such that I have the following working (below). This does nothing more than open a program. I have commented out the portion #app.AM.MenuSelect(File-Open Database) When it is uncommented, the program fails. However, when I tinker with this MenuSelect() for, say, Notepad, this presents no problem and behaves as expected. For example, the following works with notepad: app.Notepad.MenuSelect(Help-Help Topics) At the risk of sounding too silly, how do I know what to place after app.??.MenuSelect? I've tried this with a few programs and the name I use in place of ?? Doesn't seem to work. import time import sys try: from pywinauto import application except ImportError: import os.path pywinauto_path = os.path.abspath(__file__) pywinauto_path = os.path.split(os.path.split(pywinauto_path)[0])[0] import sys sys.path.append(pywinauto_path) from pywinauto import application def AM(): app = application.Application() try: app.start_( # connect_(path = urC:\Program Files\American Institutes for Research\AMBeta\AM.exe) except application.ProcessNotFoundError: print You must first start Windows Media \ Player before running this script sys.exit() #app.AM.MenuSelect(File-Open Database) def Main(): start = time.time() AM() if __name__ == __main__: Main() -Original Message- From: simon.brunn...@gmail.com [mailto:simon.brunn...@gmail.com] On Behalf Of Simon Brunning Sent: Friday, September 11, 2009 11:02 AM To: Doran, Harold Cc: python-list@python.org Subject: Re: Use python to execute a windows program 2009/9/11 Doran, Harold hdo...@air.org: The way we do this now is a person sits in front of their machine and proceeds as follows: 1) Open windows program 2) Click file - open which opens a dialog box 3) Locate the file (which is a text file) click on it and let the program run. It might very well be possible, depending upon how the program you want to automate has been written. First, make sure, absolutely sure, that's there's no proper automation option available - a command line version, COM automation, that kind of thing. These approaches are very much easier than GUI automation. If none of these options are available, http://pywinauto.openqa.org/ is probably what you need. -- Cheers, Simon B. -- http://mail.python.org/mailman/listinfo/python-list
Re: Different results for request() vs putrequest()
In h7pdan$5i...@reader1.panix.com John Gordon gor...@panix.com writes:
According to the documentation, these two sections of code should be
equivalent:
conn = httplib.HTTPSConnection(host)
conn.putrequest(POST, url)
conn.putheader(Proxy-Authorization, myProxy)
conn.putheader(Content-Length, %d % len(body))
conn.endheaders()
conn.send(body)
vs
headers = { Proxy-Authorization: myProxy }
conn = httplib.HTTPSConnection(host)
conn.request(POST, url, body, headers)
And yet they are not. The first section works, but I get an
HTTP/1.1 401 Unauthorized error from the second.
To follow up my own post, this was happening because of a trailing
newline in myProxy, put there by base64.encodestring().
The newline made the server stop processing any subsequent headers.
--
John Gordon A is for Amy, who fell down the stairs
gor...@panix.com B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies
--
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Re: Unexpected 411 error response using httplib
In h7h963$4a...@reader1.panix.com John Gordon gor...@panix.com writes: As you can see, I am including the call to putheader() for Content-Length, and the debugging output confirms that the header is present in the outgoing message. So why am I getting a 411 Length Required error? To follow up my own post, this was happening because of a trailing newline in auth, put there by base64.encodestring(). The newline made the server stop processing any subsequent headers. -- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, The Gashlycrumb Tinies -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with the inclusion of new files like lxml, django, numpy, etc.
joy99 schrieb: Dear Group, I am trying to download the following files, a) lxml, b) numpy, c) scipy, and d) django. I am trying to include them in C\python26\Lib But they are giving error report, as I am trying to use them by importing. What is an error report? Unless you get more specific here, nobody will be able to help you. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with the inclusion of new files like lxml, django, numpy, etc.
On 2009-09-11 11:39 AM, joy99 wrote: Dear Group, I am trying to download the following files, a) lxml, b) numpy, c) scipy, and d) django. I am trying to include them in C\python26\Lib But they are giving error report, as I am trying to use them by importing. I am using IDLE as GUI, my OS is WinXP SP2, and my Python version 2.6. If any one suggest what is the problem, I am doing? Exactly what steps are you doing? Are you following the detailed installation instructions for each package? You cannot just download the packages and drop them into Lib. Exactly what errors are you seeing? Please copy-and-paste complete error messages; do not paraphrase. Do one package at a time, and write to each package's mailing list if you need help installing that package. -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: urlopen error (11001, 'getaddrinfo failed')
Thank you for the response. I have been using
urllib2.urlopen(http://www.openlayers.org;), so I can rule out the
url being incorrect. Since my original question I can add the
following:
1. I am not using a proxy to connect to the internet
2. I added these lines to the script:
...
proxy_support = urllib2.ProxyHandler({})
opener = urllib2.build_opener(proxy_support)
urllib2.install_opener(opener)
...
I believe this tells python not to look for a proxy server.
3. I have added http://www.openlayers.org and its ip to my windows
hosts file
4. socket.gethostbyname produces the same 11001 error as
urllib2.urlopen
You are spot-on suggesting a dns issue. It seems like python
cannot resolve hostnames when it is running in Tomcat 6. Here is
my Tomcat cgi config from web.xml:
servlet
servlet-namecgi/servlet-name
servlet-classorg.apache.catalina.servlets.CGIServlet/servlet-
class
init-param
param-namedebug/param-name
param-value0/param-value
/init-param
init-param
param-namecgiPathPrefix/param-name
param-valueWEB-INF/cgi/param-value
/init-param
init-param
param-nameexecutable/param-name
param-valueC:/Program
Files/Python25/python.exe/param-value
/init-param
init-param
param-namepassShellEnviroment/param-name
param-valuetrue/param-value
/init-param
load-on-startup5/load-on-startup
/servlet
servlet-mapping
servlet-namecgi/servlet-name
url-pattern/cgi-bin/*/url-pattern
/servlet-mapping
The hostnames consistently resolve in Apache Server with the same
script, so I don't think my dns config is wrong. I don't have a
local firewall, but could my network firewall be blocking python
from takin care of business? Can anyone share their experience or
a link on running python in Tomcat?
thanks again,
josh
On Fri, 11 Sep 2009 08:54:20 -0500 Chris Withers
ch...@simplistix.co.uk wrote:
open...@hushmail.com wrote:
fs = cgi.FieldStorage()
url = fs.getvalue('url', http://www.openlayers.org;)
try:
insert a print url here...
y = urllib2.urlopen(url)
print y.read()
This script produces the urlopen error (11001, 'getaddrinfo
failed').
This is a name lookup failing, whatever you're ending up with in
url is
either incorrect or the dns config of the server it's pointing at
is
incorrect...
Chris
--
Simplistix - Content Management, Batch Processing Python
Consulting
- http://www.simplistix.co.uk
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Re: [Guppy-pe-list] An iteration idiom (Was: Re: loading files containing multiple dumps)
Chris Withers wrote: Sverker Nilsson wrote: The __repr__ I use don't have the enclosing , granted, maybe I missed this or it wasn't in the docs in 2005 or I didn't think it was important (still don't) but was that really what the complain was about? No, it was about the fact that when I do repr(something_from_heapy) I get a shedload of text. I thought it was more useful to actually get information of what was contained in the object directly at the prompt, than try to show how to recreate it which wasn't possible anyway. Agreed, but I think the stuff you currently have in __repr__ would be better placed in its own method: heap() IdentitySet object at 0x containing 10 items For what it's worth, the container class I wrote recently to hold dbf rows is along the lines of Chris' suggestion; output is similar to this: DbfList(97 records) or, if a description was provided at list creation time: DbfList(State of Oregon - 97 records) basically, a short description of what's in the container, instead of 97 screens of gibberish (even usefull information is gibberish after 97 screenfulls of it!-) ~Ethan~ -- http://mail.python.org/mailman/listinfo/python-list
Re: Turn-based game - experimental economics
In data sabato 05 settembre 2009 21:47:41, Dennis Lee Bieber ha scritto: Much better to just send the token TO the active client (which is responsible for returning it at the end of its turn processing) Dennis, I am finally getting my head round this problem. I do have a further question, though. I am using XMLRPC as server. It is quite convenient since it handles all low- level network stuff for me. On the other hand, though, it seems I cannot make the server actually _send_ anything to the clients; it just sits there and waits for calls. This is rather inconvenient for me, as every time I need to send the clients some information (eg, the state of the game) I have to formulate the problem as a specific call from each client. This can indeed be done quite easily, but the end result is a staggering amount of calls to the server, and high cpu usage - this might as well slow down the network in the lab, I guess. If you look at the pseudocode you sent me - and I implemented - you see, on the clients side, where the -- are, that a call to update is made over and over again. -=-=-=-=-=- Display connect to game ACTIVE = False while True: get game data--- * update console display --- * ACTIVE = game data == active token if ACTIVE: get user input if user input == EndTurn: ACTIVE = False send user input if user input == QUIT: break disconnect from game Is there any way of telling XMLRPC 'send this and this to all clients connected'? Or should I use another server-side technology? I have no much experience in writing network programs - this is my first - and I'd rather not go into complicated stuff. Thanks! -- Paolo Crosetto - PhD Student in Economics DEAS - Department of Economics - University of Milan - -- http://mail.python.org/mailman/listinfo/python-list
Re: Python server locks up
sturlamolden sturlamol...@yahoo.no writes: Python uses reference counting, not a generational GC like Java. A Python object is destroyed when the refcount drops to 0. The GC only collects cyclic references. If you create none, there are no GC delays (you can in fact safely turn the GC off). Python does not share Java's nasty habit of having long GC delays. If you drop the last reference to a large object (say a billion item dictionary), then Python can pause for quite a long time freeing all the constituents of that object. -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. ~G Thanks! I will see what I can do. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python server locks up
sturlamolden wrote: On 9 Sep, 22:28, Zac Burns zac...@gmail.com wrote: Theories: Python is resizing the large dictionary Python is garbage collecting Python uses reference counting, not a generational GC like Java. The CPython implementation, that is. Jython, built on top of Java, uses Java's GC. Ditto for IronPython implementation. PyPY may allow some choice. A Python object is destroyed when the refcount drops to 0. The GC only collects cyclic references. If you create none, there are no GC delays (you can in fact safely turn the GC off). Python does not share Java's nasty habit of having long GC delays. -- http://mail.python.org/mailman/listinfo/python-list
Creating a local variable scope.
Hi All,
I find several places in my code where I would like to have a variable
scope that is smaller than the enclosing function/class/module definition.
One representative example would look like:
--
spam = { ... }
eggs = { ... }
ham = (a[eggs], b[spam])
--
The essence is that for readability, I want spam and eggs in separate
definitions, but for clarity, I would like to express the fact that they
are local to the definition of ham, i.e., they are not used outside of
the definition of ham.
The language reference at
http://docs.python.org/reference/executionmodel.html says that The
following are blocks: a module, a function body, and a class
definition. (all other cases seem to refer to dynamic execution using
eval() or similar). Python 3 and 2.6 seem to have identical scope rules.
In the other languages I have used I can either use braces (C and
descendants) or use let-bindings (SML, Haskell etc.) to form local scopes.
Are there suggestions or conventions to maximize readability for these
cases in python? (Execution time is not important in the cases I
currently consider.)
Regards
Johan
--
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Re: Creating a local variable scope.
Johan Grönqvist wrote:
Hi All,
I find several places in my code where I would like to have a variable
scope that is smaller than the enclosing function/class/module definition.
One representative example would look like:
--
spam = { ... }
eggs = { ... }
ham = (a[eggs], b[spam])
--
The essence is that for readability, I want spam and eggs in separate
definitions, but for clarity, I would like to express the fact that they
are local to the definition of ham, i.e., they are not used outside of
the definition of ham.
The language reference at
http://docs.python.org/reference/executionmodel.html says that The
following are blocks: a module, a function body, and a class
definition. (all other cases seem to refer to dynamic execution using
eval() or similar). Python 3 and 2.6 seem to have identical scope rules.
In the other languages I have used I can either use braces (C and
descendants) or use let-bindings (SML, Haskell etc.) to form local scopes.
Are there suggestions or conventions to maximize readability for these
cases in python? (Execution time is not important in the cases I
currently consider.)
I'd like this also.
--
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Re: how to return value from button clicked by python
On Sep 11, 10:19 am, chen tao ct19850...@gmail.com wrote: (snip) I tried the button.invoke() function, it almost got it...however, I only want it returns value when the button clicked, but because the program is in the class _ini_ function, so it always runs once before I click the button... so don't call the function in the __init__ method OR just write a def...? -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Sep 11, 12:56 pm, Chuck galois...@gmail.com wrote: On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. ~G Thanks! I will see what I can do.- Hide quoted text - - Show quoted text - I am not sure how eTree fits in. Is that eTree.org? -- http://mail.python.org/mailman/listinfo/python-list
Python C/API Problem
Hi to all python fans,
i'm trying to run this C source file:
[code]
#include Python.h
#include structmember.h
#include compile.h
#include dirent.h
#include node.h
int main(int argc, char *argv[]) {
Py_Initialize();
struct _node *node = PyParser_SimpleParseString(from time import
time,ctime\n
print 'Today
is',ctime(time())\n,0);
if(node == NULL)
{
printf(Errore nel parsing);
}else{
PyNode_Compile(node, ./prova.pyc);
PyNode_Free(node);
}
Py_Finalize();
return 0;
}
[/code]
I compile the file without errors, but when i launch the executable i
have a Segmentation Fault. I'm using the shared library of python
2.5.2 under linux.. Any ideas? It's clear that i do some mistakes, but
where?
Thanks.
greetings, G.
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Where find regexs needed to build lexical analyzer for Python source code?
I'd like to build a lexer aka lexical analyzer aka tokenizer for Python source code as a learning exercise. Where can I find the regexs that define the tokens of Python source? (I am aware of tokenizer.py but I was hoping there was a web page w/ a list somewhere.) cs -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Sep 11, 1:09 pm, Chuck galois...@gmail.com wrote: On Sep 11, 12:56 pm, Chuck galois...@gmail.com wrote: On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. ~G Thanks! I will see what I can do.- Hide quoted text - - Show quoted text - I am not sure how eTree fits in. Is that eTree.org?- Hide quoted text - - Show quoted text - Can I just use x.read() to download the mp3 file and use x.write() to write it to a file? Or, do I have to worry about encoding/decoding etc...? I am under the impression that I can just read the mp3 and write to a file, then play it in a media player. Is this too simplified? -- http://mail.python.org/mailman/listinfo/python-list
Mapping in python? Transforming shapefile so that basemap can read them?
I'm trying to get started with plotting maps in python. I need to read shape files (.shp) and make maps. There seem to be many efforts but none is complete? I'm looking for suggestions and troubleshooting. The basemap package is obviously at an impressive stage and comes with some data: http://www.scipy.org/Cookbook/Matplotlib/Maps but it cannot read shapefiles when their coordinates are not in geographic projection. min are in a lambert, so the readshapefile fails. Apparently there is a utility that can convert a .shp file to lat/lon coordinates, but it fails for me. “You can convert the shapefile to geographic - coordinates using the shpproj utility from the shapelib tools - (http://shapelib.maptools.org/shapelib-tools.html) For me, this gives: “unable to process projection, exiting...” Has anyone overcome these problems? Thanks! Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating a local variable scope.
Johan Grönqvist schrieb:
Hi All,
I find several places in my code where I would like to have a variable
scope that is smaller than the enclosing function/class/module definition.
One representative example would look like:
--
spam = { ... }
eggs = { ... }
ham = (a[eggs], b[spam])
--
The essence is that for readability, I want spam and eggs in separate
definitions, but for clarity, I would like to express the fact that they
are local to the definition of ham, i.e., they are not used outside of
the definition of ham.
The language reference at
http://docs.python.org/reference/executionmodel.html says that The
following are blocks: a module, a function body, and a class
definition. (all other cases seem to refer to dynamic execution using
eval() or similar). Python 3 and 2.6 seem to have identical scope rules.
In the other languages I have used I can either use braces (C and
descendants) or use let-bindings (SML, Haskell etc.) to form local scopes.
Are there suggestions or conventions to maximize readability for these
cases in python? (Execution time is not important in the cases I
currently consider.)
Regards
Johan
I think it is not possible to realize something like braces in C or
let-bindings in python. But here are some Ideas to work around this problem:
1) If you define all this in the global namespace you could remove your
temporary variables afterwards, e.g.
spam = 1
ham = (spam,)
del globals()['spam']
This only works for the global namespace and not for the local! I
wouldn't recommend it.
2) create a method, which initializes ham
def make_ham():
spam = {...}
egg = {...}
return (egg, spam)
ham = make_ham()
This makes it easier to reuse ham in other situations and wouldn't
expose spam or egg.
3) Make a class for your ham data structure
If ham is so complex that you have to split it up, it may makes sense to
create a class for it. Of course this would need refactoring of the
code, but it's more readable and extensible than packing your data in
tuples, lists or dictionaries.
- Patrick
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Re: Creating a local variable scope.
2009/9/11 Johan Grönqvist johan.gronqv...@gmail.com I find several places in my code where I would like to have a variable scope that is smaller than the enclosing function/class/module definition. For what it's worth, there was a relevant proposal on the python-ideas list a few months back: http://mail.python.org/pipermail/python-ideas/2009-July/005114.html http://mail.python.org/pipermail/python-ideas/2009-July/005114.html%20 -- Daniel Stutzbach, Ph.D. President, Stutzbach Enterprises, LLC http://stutzbachenterprises.com -- http://mail.python.org/mailman/listinfo/python-list
Dataflow programming in Python
Hello all,
I just want to share with you something that I've worked on recently.
It is a library which implements streams -- generalized iterators with
a pipelining mechanism and lazy-evaluation to enable data-flow
programming in Python.
The idea is to be able to take the output of a function that turn an
iterable into another iterable and plug that as the input of another
such function. While you can already do some of this using function
composition, this package provides an elegant notation for it by
overloading the '' operator.
To give a simple example of string processing, here we grep the lines
matching some regex, strip them and accumulate to a list:
import re
result = open('log').xreadlines() filter(re.compile('[Pp]attern').search)
mapmethod('strip') list
This approach focuses the programming on processing streams of data,
step by step. A pipeline usually starts with a generator, or anything
iterable, then passes through a number of processors. Multiple streams
can be branched and combined. Finally, the output is fed to an
accumulator, which can be any function of one iterable argument.
Another advantage is that the values are lazily computed, i.e. only
when the accumulator needs to have it.
Homepage:
http://trinhhaianh.com/stream.py/
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Re: Use python to execute a windows program
On Fri, Sep 11, 2009 at 12:46 PM, Doran, Harold hdo...@air.org wrote: I am working with this now. I'm toying with the examples to test out a few things and learn how this works. I've made some modifications such that I have the following working (below). This does nothing more than open a program. I have commented out the portion #app.AM.MenuSelect(File-Open Database) When it is uncommented, the program fails. However, when I tinker with this MenuSelect() for, say, Notepad, this presents no problem and behaves as expected. For example, the following works with notepad: app.Notepad.MenuSelect(Help-Help Topics) At the risk of sounding too silly, how do I know what to place after app.??.MenuSelect? I've tried this with a few programs and the name I use in place of ?? Doesn't seem to work. I'm not very familiar with pywinauto myself, but a quick look through the docs says that the application looks for a window or dialog with a similar name to what you put there. So, what does the title bar of the window opened by AM.exe say? You should use a name that is similar to the title of the window you're trying to control. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Problem with queues and gobject event loop
Why does not this snipplet work? - from job import JobQueue import Queue import threading import gobject q=JobQueue() def worker(): print Worker waiting q.get() print Got job! if __name__ == __main__: t = threading.Thread(target=worker) t.start() q.put(1) loop = gobject.MainLoop() loop.run() - It blocks indefinitely on the q.get() in the worker thread. When I remove the the gobject main loop call, the code works fine and worker thread gets to the print Got job! statement. This is just simplified example to show the weird behaviour, otherwise I am trying to receive messages via DBus and schedule jobs for another thread(I am a DBus server). So is it a bug, my mistake or just simply queues can't be used in combination with gobject main loop? Can I use dbus without main loop(since I really don't need it, but I couldn't find any example how to get rid of it. Thank you. -- http://mail.python.org/mailman/listinfo/python-list
RE: Use python to execute a windows program
Thanks, Jerry. Tried that, as well as various other possible names to no avail. -Original Message- From: python-list-bounces+hdoran=air@python.org [mailto:python-list-bounces+hdoran=air@python.org] On Behalf Of Jerry Hill Sent: Friday, September 11, 2009 3:09 PM To: python-list@python.org Subject: Re: Use python to execute a windows program On Fri, Sep 11, 2009 at 12:46 PM, Doran, Harold hdo...@air.org wrote: I am working with this now. I'm toying with the examples to test out a few things and learn how this works. I've made some modifications such that I have the following working (below). This does nothing more than open a program. I have commented out the portion #app.AM.MenuSelect(File-Open Database) When it is uncommented, the program fails. However, when I tinker with this MenuSelect() for, say, Notepad, this presents no problem and behaves as expected. For example, the following works with notepad: app.Notepad.MenuSelect(Help-Help Topics) At the risk of sounding too silly, how do I know what to place after app.??.MenuSelect? I've tried this with a few programs and the name I use in place of ?? Doesn't seem to work. I'm not very familiar with pywinauto myself, but a quick look through the docs says that the application looks for a window or dialog with a similar name to what you put there. So, what does the title bar of the window opened by AM.exe say? You should use a name that is similar to the title of the window you're trying to control. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating a local variable scope.
Patrick Sabin wrote:
Johan Grönqvist schrieb:
Hi All,
I find several places in my code where I would like to have a variable
scope that is smaller than the enclosing function/class/module
definition.
One representative example would look like:
--
spam = { ... }
eggs = { ... }
ham = (a[eggs], b[spam])
--
[snip]
1) If you define all this in the global namespace you could remove your
temporary variables afterwards, e.g.
spam = 1
ham = (spam,)
del globals()['spam']
Why use globals()? You could just say
del spam
and be done with it.
~Ethan~
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Re: Extracting patterns after matching a regex
On Sep 9, 4:58 pm, Al Fansome al_fans...@hotmail.com wrote: Mart. wrote: On Sep 8, 4:33 pm, MRAB pyt...@mrabarnett.plus.com wrote: Mart. wrote: On Sep 8, 3:53 pm, MRAB pyt...@mrabarnett.plus.com wrote: Mart. wrote: On Sep 8, 3:14 pm, Andreas Tawn andreas.t...@ubisoft.com wrote: Hi, I need to extract a string after a matching a regular expression. For example I have the string... s = FTPHOST: e4ftl01u.ecs.nasa.gov and once I match FTPHOST I would like to extract e4ftl01u.ecs.nasa.gov. I am not sure as to the best approach to the problem, I had been trying to match the string using something like this: m = re.findall(rFTPHOST, s) But I couldn't then work out how to return the e4ftl01u.ecs.nasa.gov part. Perhaps I need to find the string and then split it? I had some help with a similar problem, but now I don't seem to be able to transfer that to this problem! Thanks in advance for the help, Martin No need for regex. s = FTPHOST: e4ftl01u.ecs.nasa.gov If FTPHOST in s: return s[9:] Cheers, Drea Sorry perhaps I didn't make it clear enough, so apologies. I only presented the example s = FTPHOST: e4ftl01u.ecs.nasa.gov as I thought this easily encompassed the problem. The solution presented works fine for this i.e. re.search(r'FTPHOST: (.*)',s).group(1). But when I used this on the actual file I am trying to parse I realised it is slightly more complicated as this also pulls out other information, for example it prints e4ftl01u.ecs.nasa.gov\r\n', 'FTPDIR: /PullDir/0301872638CySfQB\r\n', 'Ftp Pull Download Links: \r\n', 'ftp://e4ftl01u.ecs.nasa.gov/PullDir/ 0301872638CySfQB\r\n', 'Down load ZIP file of packaged order:\r\n', etc. So I need to find a way to stop it before the \r slicing the string wouldn't work in this scenario as I can envisage a situation where the string lenght increases and I would prefer not to keep having to change the string. If, as Terry suggested, you do have a tuple of strings and the first element has FTPHOST, then s[0].split(:)[1].strip() will work. It is an email which contains information before and after the main section I am interested in, namely... FINISHED: 09/07/2009 08:42:31 MEDIATYPE: FtpPull MEDIAFORMAT: FILEFORMAT FTPHOST: e4ftl01u.ecs.nasa.gov FTPDIR: /PullDir/0301872638CySfQB Ftp Pull Download Links: ftp://e4ftl01u.ecs.nasa.gov/PullDir/0301872638CySfQB Down load ZIP file of packaged order: ftp://e4ftl01u.ecs.nasa.gov/PullDir/0301872638CySfQB.zip FTPEXPR: 09/12/2009 08:42:31 MEDIA 1 of 1 MEDIAID: I have been doing this to turn the email into a string email = sys.argv[1] f = open(email, 'r') s = str(f.readlines()) To me that seems a strange thing to do. You could just read the entire file as a string: f = open(email, 'r') s = f.read() so FTPHOST isn't the first element, it is just part of a larger string. When I turn the email into a string it looks like... 'FINISHED: 09/07/2009 08:42:31\r\n', '\r\n', 'MEDIATYPE: FtpPull\r\n', 'MEDIAFORMAT: FILEFORMAT\r\n', 'FTPHOST: e4ftl01u.ecs.nasa.gov\r\n', 'FTPDIR: /PullDir/0301872638CySfQB\r\n', 'Ftp Pull Download Links: \r \n', 'ftp://e4ftl01u.ecs.nasa.gov/PullDir/0301872638CySfQB\r\n', 'Down load ZIP file of packaged order:\r\n', So not sure splitting it like you suggested works in this case. Within the file are a list of files, e.g. TOTAL FILES: 2 FILENAME: MOD13A2.A2007033.h17v08.005.2007101023605.hdf FILESIZE: 11028908 FILENAME: MOD13A2.A2007033.h17v08.005.2007101023605.hdf.xml FILESIZE: 18975 and what i want to do is get the ftp address from the file and collect these files to pull down from the web e.g. MOD13A2.A2007033.h17v08.005.2007101023605.hdf MOD13A2.A2007033.h17v08.005.2007101023605.hdf.xml Thus far I have #!/usr/bin/env python import sys import re import urllib email = sys.argv[1] f = open(email, 'r') s = str(f.readlines()) m = re.findall(rMOD\.\.h..v..\.005\..\ \, s) ftphost = re.search(r'FTPHOST: (.*?)\\r',s).group(1) ftpdir = re.search(r'FTPDIR: (.*?)\\r',s).group(1) url = 'ftp://' + ftphost + ftpdir for i in xrange(len(m)): print i, ':', len(m) file1 = m[i][:-4] # remove xml bit. file2 = m[i] urllib.urlretrieve(url, file1) urllib.urlretrieve(url, file2) which works, clearly my match for the MOD13A2* files isn't ideal I guess, but they will always occupt those dimensions, so it should work. Any suggestions on how to improve this are appreciated. Suppose the file contains your example text above. Using 'readlines' returns a list of the lines: f = open(email, 'r') lines = f.readlines() lines ['TOTAL FILES: 2\n', '\t\tFILENAME: MOD13A2.A2007033.h17v08.005.2007101023605.hdf\n', '\t\tFILESIZE: 11028908\n', '\n', '\t\tFILENAME:
Re: Use python to execute a windows program
On Fri, Sep 11, 2009 at 3:31 PM, Doran, Harold hdo...@air.org wrote: Thanks, Jerry. Tried that, as well as various other possible names to no avail. You'll need to dig into the documentation then, probably starting in one of these two places: http://pywinauto.openqa.org/howto.html http://pywinauto.openqa.org/module-pywinauto.application.html The howto says that once you've started your application, calling app.windows_() will return a list of visible, enabled, top level windows of the application. Try printing those and seeing if any of them look like the window you want. Or maybe try app.top_window_() which tries to guess which window might be the main window of your application. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
Re: Python C/API Problem
On Sep 11, 2009, at 2:10 PM, Gianfranco Murador wrote:
Hi to all python fans,
i'm trying to run this C source file:
[code]
#include Python.h
#include structmember.h
#include compile.h
#include dirent.h
#include node.h
int main(int argc, char *argv[]) {
Py_Initialize();
struct _node *node = PyParser_SimpleParseString(from time import
time,ctime\n
print 'Today
is',ctime(time())\n,0);
if(node == NULL)
{
printf(Errore nel parsing);
}else{
PyNode_Compile(node, ./prova.pyc);
PyNode_Free(node);
}
Py_Finalize();
return 0;
}
[/code]
I compile the file without errors, but when i launch the executable i
have a Segmentation Fault. I'm using the shared library of python
2.5.2 under linux.. Any ideas? It's clear that i do some mistakes, but
where?
Hi G,
With some basic debugging you should at least be able to figure out on
which line the segfault happens. Have you done that?
bye
Philip
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Re: Creating a local variable scope.
Johan Grönqvist wrote:
Hi All,
I find several places in my code where I would like to have a variable
scope that is smaller than the enclosing function/class/module definition.
One representative example would look like:
--
spam = { ... }
eggs = { ... }
ham = (a[eggs], b[spam])
--
The essence is that for readability, I want spam and eggs in separate
definitions, but for clarity, I would like to express the fact that they
are local to the definition of ham, i.e., they are not used outside of
the definition of ham.
delete spam, eggs
rather effectively says that the reader can also forget the bindings.
Execution time is minimal since no object is gc'ed.
This works with function locals also:
def f():
i=1; del i; print (i)
f()
Traceback (most recent call last):
File pyshell#6, line 1, in module
f()
File pyshell#5, line 2, in f
i=1; del i; print (i)
UnboundLocalError: local variable 'i' referenced before assignment
However, since probably a majority of non-function bindings are rather
local, I do not see that this really improved readability.
Within a module intended to be imported, using _spam, _eggs would signal
that they are only inted for local use. Delete if you want to enforce that.
The language reference at
http://docs.python.org/reference/executionmodel.html says that The
following are blocks: a module, a function body, and a class
definition. (all other cases seem to refer to dynamic execution using
eval() or similar). Python 3 and 2.6 seem to have identical scope rules.
Not exactly. In 3.0, comprehensions define a new scope by virtue of
being implicit function bodies.
In the other languages I have used I can either use braces (C and
descendants) or use let-bindings (SML, Haskell etc.) to form local scopes.
I consider that simplicity of Python scoping to be a major feature; it
is one of the reasons I use it.
tjr
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Writing a thread-safe class
Hello I would like to write a class with methods that can be accessed by many threads at the same time. For this I have a lock attribute in my class obtained with threading.Lock(), in the constructor, and every method begins by acquiring the lock and ends by releasing it My problem is that the lock is still an attribute of the class, and the very expression self.lock in the statement self.lock.acquire() is performed before locking, thus not being thread-safe. If I am correct self is a dictionary of object attributes, and if another thread has the lock and creates a new attribute, or deletes one, in the same time with my lookup for self.lock, than the lookup is compromised. How do people create thread-safe classes in python ? Thank you, Timothy Madden -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode - and MIMEType - Good friday fun.
rh0dium wrote:
Hi Geniuses,
Can anyone please show me the way.. I don't understand why this
doesn't work...
# encoding: utf-8
from email.MIMEText import MIMEText
msg = MIMEText(hi)
msg.set_charset('utf-8')
print msg.as_string()
a = 'Ho\xcc\x82tel Ste\xcc\x81phane '
b = unicode(a, utf-8)
print b
msg = MIMEText(b)
msg.set_charset('utf-8')
print msg.as_string()
It should right??
'b' is Unicode, but you're telling 'msg' that it's UTF-8, which it
isn't. Try giving 'msg' the UTF-8 string:
msg = MIMEText(a)
msg.set_charset('utf-8')
print msg.as_string()
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=utf-8
Hôtel Stéphane
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Re: [Distutils] uses for setup.cfg and extracting data from it
At 08:14 AM 9/12/2009 +1000, Ben Finney wrote: Specifically, I want to programmatically access the metadata that is held in the arguments to the âdistutils.setup()â call. Without, as you say, executing any Distutils command. I am not aware of any âdistutilsâ public functions that can do that, and reading URL:http://docs.python.org/distutils/ again doesn't enlighten me. Would you be more specific about what these functions are? http://docs.python.org/distutils/apiref.html#module-distutils.core - specifically the run_setup() function. (It appears the docs do not have link anchors for individual functions, alas.) distutils.core.run_setup(setup.py, [], init) will return you an initialized Distribution object from running the setup script, without parsing any configuration files or executing any commands. You could use config or commandline instead of init if you wanted those pieces of processing to be done as well - i.e. if you wanted to be sure any setup.cfg options were processed. This will work with a sufficiently well-behaved setup.py; setup scripts that try to do build or install steps outside of any distutils command may produce side-effects when run. (Which is why setuptools always runs setup scripts in a loose sandbox that detects when a script tries to modify the filesystem outside the setup directory.) -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating a local variable scope.
On Fri, 11 Sep 2009 19:36:14 +0200, Johan Grönqvist wrote: Hi All, I find several places in my code where I would like to have a variable scope that is smaller than the enclosing function/class/module definition. ... The essence is that for readability, I want spam and eggs in separate definitions, but for clarity, I would like to express the fact that they are local to the definition of ham, i.e., they are not used outside of the definition of ham. Personally, I don't think your use-case is the least bit convincing, and I think that introducing a new scope would hurt readability and clarity rather than help it, but if you really want this, there are a couple of approaches: (1) Use comments to give your intention. spam = 'abc' # Used only in definition of ham. eggs = 'def' # Likewise. ham = (a[eggs], b[spam]) (2) Delete the local names afterwards. spam = 'abc' eggs = 'def' ham = (a[eggs], b[spam]) del spam, eggs (3) Create an inner function, then call that. def outer(*args): a = parrot() b = spanish_inquistion() def inner(): spam = 'abc' eggs = 'def' return a[eggs], b[spam] ham = inner() return do_something_with(ham) (4) Create a do nothing context manager allowing you to visually indent the block, but otherwise have no effect: class do_nothing: def __enter__(self): pass def __exit__(self, type, value, traceback): pass ham = () with do_nothing() as imaginary_local_scope: spam = 'abc' eggs = 'def' ham = a[eggs], b[spam] del spam, eggs, imaginary_local_scope I think the fourth is an abomination and I only mention it for completion. My personal opinion is that if you really need a local scope inside a function, the function is doing too much and should be split up. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Fri, Sep 11, 2009 at 11:09 AM, Chuck galois...@gmail.com wrote: On Sep 11, 12:56 pm, Chuck galois...@gmail.com wrote: On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. I am not sure how eTree fits in. Is that eTree.org? No, he's referring to the `xml.etree.elementtree` standard module: http://docs.python.org/library/xml.etree.elementtree.html#module-xml.etree.ElementTree Although since you're dealing with feeds, you might be able to use Universal Feed Parser, which is specifically for RSS/Atom: http://www.feedparser.org/ Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Writing a thread-safe class
On Sep 11, 4:26 pm, Timothy Madden terminato...@gmail.com wrote: Hello I would like to write a class with methods that can be accessed by many threads at the same time. For this I have a lock attribute in my class obtained with threading.Lock(), in the constructor, and every method begins by acquiring the lock and ends by releasing it My problem is that the lock is still an attribute of the class, and the very expression self.lock in the statement self.lock.acquire() is performed before locking, thus not being thread-safe. If I am correct self is a dictionary of object attributes, and if another thread has the lock and creates a new attribute, or deletes one, in the same time with my lookup for self.lock, than the lookup is compromised. You are not correct. Dictionary operation (like getting and setting items) are atomic and limited to one thread at a time, thus thread- safe. (In fact, in CPython only one thread can execute Python code at a time, in most cases. This is called the Global Interpreter Lock, or GIL. If you search this newsgroup for information you will find a LOT of discission about it. Other Python implementations such as Jython may not use the GIL, but I am quite sure dictionary access is thread- safe on those platforms also.) How do people create thread-safe classes in python ? I think exactly the way you are doing it. (Some people might use threading.RLock instead as a minor safety measure, but threading.Lock will suffice.) Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
Re: string interpolation mystery in Python 2.6
On Fri, 11 Sep 2009 15:19:05 -0700, Chris Rebert wrote:
On Fri, Sep 11, 2009 at 3:12 PM, Alan G Isaac alan.is...@gmail.com
wrote:
Michael Foord came up with a much simpler illustration. With Python
2.6::
[snip]
Sounds like IOError or one of its ancestors defines both __str__() and
__unicode__ () special methods but has them produce different output.
That's what it looks like to me too, which I wouldn't call either a bug
or a feature. I don't think Python makes any promises regarding exception
messages.
However, I must admit I'm perplexed why the original example is calling
__unicode__() in the first place! Given the line:
raise self.severe('Problems with %s directive path:\n%s: %s.'
% (self.name, error.__class__.__name__, error))
it looks to me like it should be calling error.__str__() not
error.__unicode(). Making the suggested edit:
raise self.severe('Problems with %s directive path:\n%s: %s.'
% (self.name, error.__class__.__name__, str(error)))
should have no effect. But it (apparently) does. This brings us back to
Alan's original question:
MYSTERY: how can %s%error be different from %s%str(error) in Python
2.6?
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Re: Unicode - and MIMEType - Good friday fun.
b = unicode(a, utf-8)
[snip]
msg = MIMEText(b)
I believe this is the problem line -- the MIMEText constructor takes
encoded strings rather than unicode objects. Try:
msg = MIMEText(a)
Or, alternatively
msg = MIMEText(b.encode('utf-8'))
On Fri, 11 Sep 2009 16:33:42 -0700, rh0dium steven.kl...@gmail.com wrote:
Hi Geniuses,
Can anyone please show me the way.. I don't understand why this
doesn't work...
# encoding: utf-8
from email.MIMEText import MIMEText
msg = MIMEText(hi)
msg.set_charset('utf-8')
print msg.as_string()
a = 'Ho\xcc\x82tel Ste\xcc\x81phane '
b = unicode(a, utf-8)
print b
msg = MIMEText(b)
msg.set_charset('utf-8')
print msg.as_string()
It should right??
Thanks!
--
Rami Chowdhury
Never attribute to malice that which can be attributed to stupidity --
Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)
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Re: Unicode - and MIMEType - Good friday fun.
How do you suppose it should workand how is it working? what about the
outpout difference?
--
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--Original Message--
From: rh0dium steven.kl...@gmail.com
To: python-list@python.org
Date: Fri, 11 Sep 2009 04:33:42 PM -0700
Subject: Unicode - and MIMEType - Good friday fun.
Hi Geniuses,
Can anyone please show me the way.. I don't understand why this
doesn't work...
# encoding: utf-8
from email.MIMEText import MIMEText
msg = MIMEText(hi)
msg.set_charset('utf-8')
print msg.as_string()
a = 'Ho\xcc\x82tel Ste\xcc\x81phane '
b = unicode(a, utf-8)
print b
msg = MIMEText(b)
msg.set_charset('utf-8')
print msg.as_string()
It should right??
Thanks!
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Re: Podcast catcher in Python
On Sep 11, 8:32 pm, Chris Rebert c...@rebertia.com wrote: On Fri, Sep 11, 2009 at 11:09 AM, Chuck galois...@gmail.com wrote: On Sep 11, 12:56 pm, Chuck galois...@gmail.com wrote: On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. I am not sure how eTree fits in. Is that eTree.org? No, he's referring to the `xml.etree.elementtree` standard module:http://docs.python.org/library/xml.etree.elementtree.html#module-xml Although since you're dealing with feeds, you might be able to use Universal Feed Parser, which is specifically for RSS/Atom:http://www.feedparser.org/ Cheers, Chris --http://blog.rebertia.com Brilliant! I will give that a try. Cheers! -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating a local variable scope.
Steven D'Aprano: (3) Create an inner function, then call that. Several people after someone gives this anwer. My personal opinion is that if you really need a local scope inside a function, the function is doing too much and should be split up. I agree. And a way to split a function is to define an inner function, that's one of their main purposes. No need to add other things to the language as the OP suggests. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: Podcast catcher in Python
On Sep 11, 9:07 pm, Chuck galois...@gmail.com wrote: On Sep 11, 8:32 pm, Chris Rebert c...@rebertia.com wrote: On Fri, Sep 11, 2009 at 11:09 AM, Chuck galois...@gmail.com wrote: On Sep 11, 12:56 pm, Chuck galois...@gmail.com wrote: On Sep 11, 10:30 am, Falcolas garri...@gmail.com wrote: On Sep 11, 8:20 am, Chuck galois...@gmail.com wrote: Hi all, I would like to code a simple podcast catcher in Python merely as an exercise in internet programming. I am a CS student and new to Python, but understand Java fairly well. I understand how to connect to a server with urlopen, but then I don't understand how to download the mp3, or whatever, podcast? Do I need to somehow parse the XML document? I really don't know. Any ideas? Thanks! Chuck You will first have to download the RSS XML file, then parse that file for the URL for the audio file itself. Something like eTree will help immensely in this part. You'll also have to keep track of what you've already downloaded. I'd recommend taking a look at the RSS XML yourself, so you know what it is you have to parse out, and where to find it. From there, it should be fairly easy to come up with the proper query to pull it automatically out of the XML. As a kindness to the provider, I would recommend a fairly lengthy sleep between GETs, particularly if you want to scrape their back catalog. Unfortunately, I no longer have the script I created to do just such a thing in the past, but the process is rather straightforward, once you know where to look. I am not sure how eTree fits in. Is that eTree.org? No, he's referring to the `xml.etree.elementtree` standard module:http://docs.python.org/library/xml.etree.elementtree.html#module-xml Although since you're dealing with feeds, you might be able to use Universal Feed Parser, which is specifically for RSS/Atom:http://www.feedparser.org/ Cheers, Chris --http://blog.rebertia.com Brilliant! I will give that a try. Cheers! Does anyone know how I should read/download the mp3 file, and how I should write/save it so that I can play it on a media player such as Windoze media player? Excuse my ignorance, but I am a complete noob at this. I downloaded the mp3, and I got a ton of hex, I think, but it could've been unicode. -- http://mail.python.org/mailman/listinfo/python-list
[issue6873] posix_lchown: possible overflow of uid, gid
Martin v. Löwis mar...@v.loewis.de added the comment: I think the new patch is still incorrect. You now pass long variables into the i argument parser. Also, I would expect that compilers prefer to see an explicit cast from long to uid_t, in case it's a truncating cast. Can you try your patch on a system where all this is an actual problem? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6873 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
