Re: question about an exciting gotcha for unittests (and elsewhere) ...
On 23Apr2010 15:37, I wrote:
| class Backend(object):
| def serialise(self, value):
| ''' Convert a value for external string storage.
| '''
| if isinstance(value, Node): [...]
| return :%s:%s % (value.type, value.name)
| t = type(value)
| assert t in (str,int), repr(t)+ +repr(value)+ +repr(Node)
| [...]
[...]
| AssertionError: class '__main__.Node' HOST:foo:{} class
'cs.nodedb.node.Node'
|
| Experienced users will see at once what's happened: I've made a Node
| myself in the test using the local class, and the Node class is thus
| __main__.Node. However, my sql Backend class has independently imported
| the Node and Backend classes from cs.nodedb.node. So when _it_
| calls serialise(), Node is cs.nodedb.node.Node.
[...]
A walk around the block and I'm thinking the olny sane way to do this is
to use relative imports, to always get the sqla.py module from the same
place as the node.py where the test lives, and likewise in sqla.py
to relatively import node.py to get its matching file.
And then to explicitly import from node etc in the test to get the
right names.
However, that means the unit test knows its own filename/module-name.
This doesn't feel totally nice.
Remarks, anyone?
--
Cameron Simpson c...@zip.com.au DoD#743
http://www.cskk.ezoshosting.com/cs/
I have an inferiority complex, but it isn't a very good one.
- Bill Garrett garr...@cs.unc.edu
--
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Re: Windows debugging symbols for python 2.5.4 and pywin32 214
On 22/04/2010 7:23 AM, Alexandre Fayolle wrote: Hi everyone, I have a production server running a Windows Service written in Python, which uses python 2.5.4 (yes I know it is old, but I am somewhat stuck with this for now) and pywin32 214. Given a set of manipulations, I get a stack overflow in the service, and a bad crash. The same operation when running without win32serviceutil.ServiceFramework does not trigger the bug. I'm looking for some debugging tools (debug build of the interpreter and the pywin32 libraries) that some good soul could have kept from a previous debugging session to try to get a C stack trace and understand what causes this. I expect the problem might be that pythonservice.exe isn't linked with a large enough stack - python itself builds with a larger than default stack. That difference could cause a recursive function to hard-crash before Python itself detected the recursion as being too deep. You could test this by playing with the sys.setrecursionlimit function - at some limit I expect you would find the hard-crash would be replaced with a max recursion exception. Let me know if that is the case and I'll be sure to adjust the stack size for the next pywin32 build. Any hint towards what could cause that stack overflow would be welcome too. The application is multithreaded (and uses pyro and twisted). I can provide more information for the curious. Some parts of twisted are written such that server responses are processed recursively, and very large input can cause the recursion limit to be hit. I'm still occasionally bitten by this in the IMAP client code... HTH, Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter question
On Apr 22, 5:55 pm, Rotwang sg...@hotmail.co.uk wrote: James Mills wrote: On Wed, Apr 21, 2010 at 8:45 PM, Rotwang sg...@hotmail.co.uk wrote: [...] From reading the documentation myself (pydoc)... It would seem your only option is to make a thread out of this (not my preferred way - I was hoping it was possible to poll the Tk event system...). Thanks, I don't know anything about threading at the moment but I'll look into it. From my experience, mixing Tkinter with threads is a bad idea. As most GUI toolkits, it really doesn't like to be manipulated from different threads, so you might end up getting weird problems or even crashes. By the way, did you try to remove the line out.mainloop() from your 'draw' function? This is the line that blocks the IDLE GUI, since it initiates a secondary event loop that will only exit when you do a out.quit(), so that might be a solution. BTW, another problem: whenever I call a widget.quit() method, the widget in question crashes. IDLE carries on working but the widget window stays there, not responding, and if I tell my OS to kill it then IDLE restarts. Is this a bug? I'm using Windows 7 and Python 2.6.4. The 'quit' method just exits the mainloop. It doesn't destroy the widget. So if your application doesn't actually exit, the widget will just stay there. If you want to destroy the it too, you have to call explicitely widget.destroy(). HTH - Eric - -- http://mail.python.org/mailman/listinfo/python-list
Re: question about an exciting gotcha for unittests (and elsewhere) ...
On 23Apr2010 16:15, I wrote:
| On 23Apr2010 15:37, I wrote:
| | class Backend(object):
| | def serialise(self, value):
| | ''' Convert a value for external string storage.
| | '''
| | if isinstance(value, Node): [...]
| | return :%s:%s % (value.type, value.name)
| | t = type(value)
| | assert t in (str,int), repr(t)+ +repr(value)+ +repr(Node)
| | [...]
| [...]
| | AssertionError: class '__main__.Node' HOST:foo:{} class
'cs.nodedb.node.Node'
| |
| | Experienced users will see at once what's happened: I've made a Node
| | myself in the test using the local class, and the Node class is thus
| | __main__.Node. However, my sql Backend class has independently imported
| | the Node and Backend classes from cs.nodedb.node. So when _it_
| | calls serialise(), Node is cs.nodedb.node.Node.
| [...]
|
| A walk around the block and I'm thinking the olny sane way to do this is
| to use relative imports, to always get the sqla.py module from the same
| place as the node.py where the test lives, and likewise in sqla.py
| to relatively import node.py to get its matching file.
|
| And then to explicitly import from node etc in the test to get the
| right names.
|
| However, that means the unit test knows its own filename/module-name.
Further down this path I've done the following:
node.py's unittest now doesn't use the sqla module at all, and passes its
self tests with a no-op Backend
sqla.py's unittest subclasses node.py's unittest and replaces the setUp()
with one that uses a Backend_SQLAlchemy object
the imports at the top of sqla.py now read:
from . import NodeDB, Backend
from .node import TestAll as NodeTestAll
to remove special knowledge of the package name
I was invoking the self test like this:
DEBUG=1 dev python2.6 ./lib/cs/nodedb/sqla.py
which breaks relative imports. Now I do this:
DEBUG=1 dev python2.6 -m cs.nodedb.sqla
and it is all good. (dev is a wrapper to set PYTHONPATH
to use my work area, etc).
Since I've convinced myself that my previous practices were inherently
instantiating node.py twice with different names, I guess I can say my
problem is solved, for some definition of the term:-)
Cheers,
--
Cameron Simpson c...@zip.com.au DoD#743
http://www.cskk.ezoshosting.com/cs/
Every program has at least one bug and can be shortened by at least one
instruction -- from which, by induction, it is evident that every
program can be reduced to one instruction that does not work.
- Ken Arnold
--
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Re: Linux servers, network and file names
Infinity77 wrote: Hi All, I apologize in advance if this sounds like a stupid question but I am really no expert at all in network things, and I may be looking in the wrong direction altogether. At work we have a bunch of Linux servers, and we can connect to them with our Windows PCs over a network. Now, let's assume we only have one Linux server, let's call it SERVER. Everyone of us, on our Windows PC, can map this server as a network drive choosing whatever Windows drive letter he wants. For example, I could map SERVER to be Y:/, my colleague might call it Z:/ and so on. The problem arises in one of my little applications, which allows the user to choose a file living in SERVER and do some calculations with it; then, this file name gets saved in a common database (common in the sense that it is shared between Windows users, ourselves). Now, I choose this file myself, the FileDialog (a window representing a file selector dialog) will return something like this (let's ignore the back/forward slashes, this is not an issue): Y:/Folder/FileName.txt If my colleague does it, he will get: Z:/Folder/FileName.txt Even if I am able to work out the server name using the Windows drive letter (and I was able to do it, now I don't remember anymore how to do it), what I get is: For me: //SERVER/gavana/Folder/FileName.txt Colleague: //SERVER/Colleague/Folder/FileName.txt So, no matter what I do, the file name stored in the database is user- dependent and not universal and common to all of us. Am I missing something fundamental? I appreciate any suggestion, even a Windows-only solution (i.e., based on PyWin32) would be perfect. Thank you in advance for your help. Andrea. why don't you store servers path to file in a database? example: //SERVER/Public/file.txt this way you can use python to list files in share without the need for mapping drives, if permissions are set correctly. -- http://mail.python.org/mailman/listinfo/python-list
Re: Hi, friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums?
Steven D'Aprano wrote: John Nagle wrote: Is nlargest smart enough to decide when it's cheaper to track the N largest entries on a linear pass through the list than to sort? It *always* does a linear pass through the list (linear, that is in the length of the entire list). It tracks the n largest elements seen so far in a heap. Doesn't appear to do so. From Python 3.1: I think you're mis-reading it. def nlargest(n, iterable): Find the n largest elements in a dataset. Equivalent to: sorted(iterable, reverse=True)[:n] it = iter(iterable) result = list(islice(it, n)) if not result: return result heapify(result) _heappushpop = heappushpop for elem in it: _heappushpop(result, elem) result.sort(reverse=True) return result That doesn't sort, or even heapify, the whole list. It keeps the largest n elements seen so far in the 'result' heap, smallest on top. Note the doc for heappushpop: Push item on the heap, then pop and return the smallest item from the heap. Thus the 'result' heap stays of size n. The final result.sort() is just so the returned list is sorted, and assuming that's a requirement, I think the algorithm is asymptotically the best a comparison-based method can do, regardless of whether the length of the entire sequence dominates n. I figure the worst-case run time is Theta(s lg(n)) where s in the length of the sequence. Interestingly, nsmallest does use two different algorithms, depending on how many items you ask for. See the source code. That is interesting. The above algorithm for nlargest is better, but to use it for nsmallest requires a largest-on-top heap, which the module does not bother to implement. -- --Bryan -- http://mail.python.org/mailman/listinfo/python-list
question about an exciting gotcha for unittests (and elsewhere) ...
I've run into a problem unittesting something I'm writing.
I have a little node tracking class I'm using to track items and
attributes. An item is a Node object, and the collection is a
NodeDB.
So I'm writing some unittests, thus:
class Node(dict): [...]
class NodeDB(dic): [...]
class Backend(object):
def serialise(self, value):
''' Convert a value for external string storage.
'''
if isinstance(value, Node): [...]
return :%s:%s % (value.type, value.name)
t = type(value)
assert t in (str,int), repr(t)+ +repr(value)+ +repr(Node)
[...]
class TestAll(unittest.TestCase):
def setUp(self):
from cs.nodedb.sqla import Backend_SQLAlchemy
self.backend=Backend_SQLAlchemy('sqlite:///:memory:')
self.db=NodeDB(backend=self.backend)
def test01serialise(self):
H = self.db.newNode('HOST', 'foo')
for value in 1, 'str1', ':str2', '::', H:
s = self.backend.serialise(value)
assert type(s) is str
self.assert_(value == self.backend.deserialise(s))
[...]
if __name__ == '__main__':
import sqlalchemy
print 'SQLAlchemy version =', sqlalchemy.__version__
unittest.main()
and it's failing. I've traced the failure cause, ending up with this
assertion message from the end of serialise() above:
AssertionError: class '__main__.Node' HOST:foo:{} class
'cs.nodedb.node.Node'
Experienced users will see at once what's happened: I've made a Node
myself in the test using the local class, and the Node class is thus
__main__.Node. However, my sql Backend class has independently imported
the Node and Backend classes from cs.nodedb.node. So when _it_
calls serialise(), Node is cs.nodedb.node.Node.
And lo, the:
if isinstance(value, Node):
test at the top of serialise() fails.
What's a sensible way of doing this correctly?
I _don't_ want to duck-type the Node and merely test for type and name
values, because I want to be rather picky about what gets into the backend
database - the wrong types indicate bad app code, and should not be allowed
to introduce corrupt database values.
Cheers,
--
Cameron Simpson c...@zip.com.au DoD#743
http://www.cskk.ezoshosting.com/cs/
That particular mistake will not be repeated. There are plenty of mistakes
left that have not yet been used. - Andy Tanenbaum a...@cs.vu.nl
--
http://mail.python.org/mailman/listinfo/python-list
Re: Linux servers, network and file names
On 04/22/10 15:13, Infinity77 wrote: cut For me: //SERVER/gavana/Folder/FileName.txt Colleague: //SERVER/Colleague/Folder/FileName.txt So, no matter what I do, the file name stored in the database is user- dependent and not universal and common to all of us. If that user dependent part happens to be equal to the login name, then what you could do is replace is with the username variable (I believe %USERNAME% on windows) instead. -- mph -- http://mail.python.org/mailman/listinfo/python-list
Smtpd module
I would like to use smtpd module to write very simple smtp server but this server must: 1. accept several connections at the same time( like a forking server) 2. have basic authentication that is it must understand AUTH command. Does anyone know if the smtpd module have both? Thanks Ba. -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling multiple programs with subprocess
amit asked: How does one go about calling multiple programs using subprocess? This is the program flow: C:\ wrenv.exe C:\ make clean .. The 'wrenv.exe' is necessary since it sets up the proper environment for building. How do I use subprocess to execute 'wrenv.exe' and then the 'make clean' command. Any help is appreciated. In this case I don't see that you need to call multiple programs simultaneously. You call 'wrenv.exe', then when and if it completes successfully you call 'make clean'. Calling multiple programs sequentially should be straightforward. What, specifically, is going wrong? Python's subprocess module rocks on Unix, and provides some useful corresponding features that are easily available on MS Windows. If your job is to rock on Windows, don't commit to modules devoted to rockin' on Unix. Python has multiple ways to run wrenv.exe, then make clean. In particular, check out os.system. -- --Bryan -- http://mail.python.org/mailman/listinfo/python-list
Making special method names, work with __getattr__
The following is a proof of concept. The idea is to have variables that
represent symbolic names/expressions, you can work with like ordinary
values, but that can be evaluated later.
This is the code:
import operator
from functools import partial
class Expression (object) :
def __add__(self, term):
return Binary(self, operator.__add__, term)
def __getattr__(self, name):
op = getattr(operator, name)
return partial(Binary, self, op)
class Binary (Expression) :
def __init__(self, left, op, right):
self.left = left
self.operator = op
if not isinstance(right, Expression):
right = Value(right)
self.right = right
def eval(self, dct):
left = self.left.eval(dct)
right = self.right.eval(dct)
return self.operator(left, right)
class Symbol (Expression):
def __init__(self, name):
self.name = name
def eval(self, dct={}):
return dct[self.name]
class Value (Expression):
def __init__(self, val):
self.value = val
def eval(self, dct={}):
return self.value
def test():
dct = {var1 : 5, var2 : 7}
val1 = Symbol(var1)
val2 = Symbol(var2)
print val1.eval(dct)
sum = val1 + 3
print sum.eval(dct)
sum = sum + val2
print sum.eval(dct)
product = val1 * 7
print product.eval(dct)
test()
--
The result I get is:
5
8
15
Traceback (most recent call last):
File Symbolics, line 54, in module
test()
File Symbolics, line 51, in test
product = val1 * 7
TypeError: unsupported operand type(s) for *: 'Symbol' and 'int'
What I had hoped for was, that the line:
product = val1 * 7
would be translated into something like
product = val1.__mul__(7)
which would then be treated by the __getattr__ of the Expression superclass.
That doesn't seem to happen.
Does anyone have another idea, so I can get this to work without having
to manually add all numeric special methods to the Expression class.
--
Antoon Pardon
--
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Re: when should I explicitly close a file?
On Fri, 2010-04-23 at 16:29 +1200, Lawrence D'Oliveiro wrote: In message mailman.2119.1271898215.23598.python-l...@python.org, Chris Rebert wrote: On Wed, Apr 21, 2010 at 5:53 PM, Lawrence D'Oliveiro wrote: In message 4bc9aad...@dnews.tpgi.com.au, Lie Ryan wrote: Since in python nothing is guaranteed about implicit file close ... It is guaranteed that objects with a reference count of zero will be disposed. In my experiments, this happens immediately. Experiment with an implementation other than CPython and prepare to be surprised. Any implementation that doesn’t do reference-counting is brain-damaged. Why? There are much better ways to do memory management / garbage collection; especially when dealing with large applications. -- http://mail.python.org/mailman/listinfo/python-list
FW: help req debugging
hi, i am using wingware to debug python.however i also want to debug my c modules which have been called in my python script simultaneously. so i have followed instructions given on http://www.wingware.com/doc/howtos/debugging-extension-modules-on-linux . as a result i launch my python script in wingide and successfully attach it to gdb.when i debug my python code i get following in gdb : [New Thread 0xa62eab90 (LWP 3957)] [New Thread 0xa5ae9b90 (LWP 3958)] [New Thread 0xa52e8b90 (LWP 3959)] [New Thread 0xa4ae7b90 (LWP 3960)] [New Thread 0xa42e6b90 (LWP 3961)] [New Thread 0xa3ae5b90 (LWP 3962)] [New Thread 0xa32e4b90 (LWP 3963)] but the problem is that when in wingide the c module is called gdb doesnt take me into the respective c module. i am new to gdb please help me where am i going wrong? Thanks in advance. Regards, Sanam Hotmail: Trusted email with Microsoft’s powerful SPAM protection. Sign up now. _ Hotmail: Free, trusted and rich email service. https://signup.live.com/signup.aspx?id=60969-- http://mail.python.org/mailman/listinfo/python-list
Re: when should I explicitly close a file?
* Adam Tauno Williams: On Fri, 2010-04-23 at 16:29 +1200, Lawrence D'Oliveiro wrote: In message mailman.2119.1271898215.23598.python-l...@python.org, Chris Rebert wrote: On Wed, Apr 21, 2010 at 5:53 PM, Lawrence D'Oliveiro wrote: In message 4bc9aad...@dnews.tpgi.com.au, Lie Ryan wrote: Since in python nothing is guaranteed about implicit file close ... It is guaranteed that objects with a reference count of zero will be disposed. In my experiments, this happens immediately. Experiment with an implementation other than CPython and prepare to be surprised. Any implementation that doesn’t do reference-counting is brain-damaged. Why? Depends on what the statement was meant to mean. But for a literal context-free interpretation e.g. the 'sys.getrefcount' function is not documented as CPython only and thus an implementation that didn't do reference counting would not be a conforming Python implementation. Whether it uses reference counting to destroy objects at earliest opportunity is another matter. There are much better ways to do memory management / garbage collection; especially when dealing with large applications. Depends on whether you're talking about Python implementations or as a matter of general principle, and depends on how you define better, large and so on. On its own it's a pretty meaningless statement. But although a small flame war erupted the last time I mentioned this, I think a case can be made that Python is not designed for programming-in-the-large. And that the current CPython scheme is eminently suitable for small scripts. But it has its drawbacks, especially considering the various ways that stack frames can be retained, and considering the documentation of 'gc.garbage', ... Objects that have __del__() methods and are part of a reference cycle cause the entire reference cycle to be uncollectable, including objects not necessarily in the cycle but reachable only from it. ... which means that a programming style assuming current CPython semantics and employing RAII can be detrimental in a sufficiently large system. Cheers hth., - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: question about an exciting gotcha for unittests (and elsewhere) ...
Cameron Simpson wrote:
and it's failing. I've traced the failure cause, ending up with this
assertion message from the end of serialise() above:
AssertionError: class '__main__.Node' HOST:foo:{} class
'cs.nodedb.node.Node'
Experienced users will see at once what's happened: I've made a Node
myself in the test using the local class, and the Node class is thus
__main__.Node. However, my sql Backend class has independently imported
the Node and Backend classes from cs.nodedb.node. So when _it_
calls serialise(), Node is cs.nodedb.node.Node.
And lo, the:
if isinstance(value, Node):
test at the top of serialise() fails.
What's a sensible way of doing this correctly?
Move the unit tests into a separate script and have that import the module
cs.nodedb.node.
In general, avoid importing a module and at the same time using it as the
main script. When persistent objects are involved the same time can even
spread over distinct runs of separate scripts accessing the same data.
Obvious? But you asked for a /sensible/ way.
Peter
--
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Re: Windows debugging symbols for python 2.5.4 and pywin32 214
On Friday 23 April 2010 08:36:01 Mark Hammond wrote: On 22/04/2010 7:23 AM, Alexandre Fayolle wrote: Hi everyone, I have a production server running a Windows Service written in Python, which uses python 2.5.4 (yes I know it is old, but I am somewhat stuck with this for now) and pywin32 214. Given a set of manipulations, I get a stack overflow in the service, and a bad crash. The same operation when running without win32serviceutil.ServiceFramework does not trigger the bug. I'm looking for some debugging tools (debug build of the interpreter and the pywin32 libraries) that some good soul could have kept from a previous debugging session to try to get a C stack trace and understand what causes this. I expect the problem might be that pythonservice.exe isn't linked with a large enough stack - python itself builds with a larger than default stack. That difference could cause a recursive function to hard-crash before Python itself detected the recursion as being too deep. You could test this by playing with the sys.setrecursionlimit function - at some limit I expect you would find the hard-crash would be replaced with a max recursion exception. Let me know if that is the case and I'll be sure to adjust the stack size for the next pywin32 build. Any hint towards what could cause that stack overflow would be welcome too. The application is multithreaded (and uses pyro and twisted). I can provide more information for the curious. Some parts of twisted are written such that server responses are processed recursively, and very large input can cause the recursion limit to be hit. I'm still occasionally bitten by this in the IMAP client code... Thank you for this very helpful information. I've found on my side that upgrading to python2.6 will prevent the crash from happening in the reported conditions, and used this as a fix (currently running extensive tests to be on the safe side). Runnning 2.6 will among other things enable me to use a recent VS compiler to rebuild stuff if required. I'm very interested in a pywin32 build with a larger stack for pythonservice.exe, as this would seriously increase my confidence level and improve my sleep quality :-) -- Alexandre Fayolle LOGILAB, Paris (France) Formations Python, CubicWeb, Debian : http://www.logilab.fr/formations Développement logiciel sur mesure : http://www.logilab.fr/services Informatique scientifique: http://www.logilab.fr/science -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter question
eb303 wrote:
On Apr 22, 5:55 pm, Rotwang sg...@hotmail.co.uk wrote:
[...]
From my experience, mixing Tkinter with threads is a bad idea. As most
GUI toolkits, it really doesn't like to be manipulated from different
threads, so you might end up getting weird problems or even crashes.
By the way, did you try to remove the line out.mainloop() from your
'draw' function?
I didn't. How do I get Python to display the draw window, other than by
using mainloop()?
This is the line that blocks the IDLE GUI, since it
initiates a secondary event loop that will only exit when you do a
out.quit(), so that might be a solution.
BTW, another problem: whenever I call a widget.quit() method, the widget
in question crashes. IDLE carries on working but the widget window stays
there, not responding, and if I tell my OS to kill it then IDLE
restarts. Is this a bug? I'm using Windows 7 and Python 2.6.4.
The 'quit' method just exits the mainloop. It doesn't destroy the
widget. So if your application doesn't actually exit, the widget will
just stay there. If you want to destroy the it too, you have to call
explicitely widget.destroy().
That worked like a charm, thanks!
Here's another problem I've run into today: I've just added a bit of
code so that it's possible to resize the draw window and the contents
will be resized automatically. The method now looks something like this:
out = Tkinter.Tk()
slave = Tkinter.Canvas(out, width = wh[0], height = wh[1])
slave.grid()
# I put the canvas widget inside a tk widget instead of just
# using the former because I want keypresses to do things, and
# it doesn't seem to be possible to bind keyboard events to a
# canvas
# draw something
slave.pack()
def resize(b):
wh[:] = [b.width, b.height]
slave.config(width = wh[0], height = wh[1])
# resize the contents of slave
out.bind('Configure', resize)
out.mainloop()
The trouble is, when I call the method the window it spawns slowly grows
larger, until I move or resize it myself by grabbing one of the edges;
after this everything works as intended. If I add the line print wh
after wh[:] = [b.width, b.height], the output looks like this (the
default value of wh is [640,480]:
[644, 484]
[648, 488]
[648, 488]
[648, 488]
[652, 492]
[652, 492]
[652, 492]
[656, 496]
[656, 496]
[656, 496]
[660, 500]
etc.
My only guess as to why this is happening is that Tkinter is resizing
out to be 4 pixels wider and taller than slave, and the line
slave.config(...) consequently leads to resize being called again. But
this doesn't explain why it stops happening when I resize the window
intentionally, nor why the window apparently only gets larger every
third time resize is called. The problem goes away if I replace wh[:] =
[b.width, b.height] with
wh[:] = [b.width - 4, b.height - 4]
but this seems like a rather ad-hoc and ugly solution, and I'd rather
understand what's going on. Can anyone help?
--
http://mail.python.org/mailman/listinfo/python-list
Re: question about an exciting gotcha for unittests (and elsewhere) ...
On 23Apr2010 13:25, Peter Otten __pete...@web.de wrote:
| Cameron Simpson wrote:
| and it's failing. I've traced the failure cause, ending up with this
| assertion message from the end of serialise() above:
|
|AssertionError: class '__main__.Node' HOST:foo:{} class
|'cs.nodedb.node.Node'
|
| Experienced users will see at once what's happened: I've made a Node
| myself in the test using the local class, and the Node class is thus
| __main__.Node. However, my sql Backend class has independently imported
| the Node and Backend classes from cs.nodedb.node. So when _it_
| calls serialise(), Node is cs.nodedb.node.Node.
|
| And lo, the:
|if isinstance(value, Node):
| test at the top of serialise() fails.
|
| What's a sensible way of doing this correctly?
|
| Move the unit tests into a separate script and have that import the module
| cs.nodedb.node.
Hmm. I have been very attracted by the idea of having the unittest in
the module itself, and run if I run the module alone (instead of
importing it).
Conversely, I've also got a few modules that are standalone programs
and running _then_ runs the app, not a bunch of tests.
Having the tests elsewhere would solve the problem as you say; an import
of the module is what real code will be doing and, as my misadventure
above demonstrates, that's a different thing as far as namespaces go.
| In general, avoid importing a module and at the same time using it as the
| main script.
Fsir enough - that's a succinct description of what I did wrong.
| When persistent objects are involved the same time can even
| spread over distinct runs of separate scripts accessing the same data.
Good point; this is another thing to add to my reluctance to use
persistent objects. Persistent _data_, sure, and my little nodedb
package is exactly such an animal, but not persistent objects.
| Obvious? But you asked for a /sensible/ way.
Indeed. Thanks for the suggestion. I'll try to pursue it; the rest of my
thread shows I've worked around some of the problem but the workaround
still depends somewhat on the package internal dependencies and going
your way with a separate test script that does a proper import will
avoid that weakness.
Cheers,
--
Cameron Simpson c...@zip.com.au DoD#743
http://www.cskk.ezoshosting.com/cs/
Thought: Why does man kill? He kills for food. And not only for
food: frequently there must be a beverage. - Woody Allen
--
http://mail.python.org/mailman/listinfo/python-list
ANN: eGenix mxODBC Zope Database Adapter 2.0.1
ANNOUNCEMENT mxODBC Zope Database Adapter Version 2.0.1 for Zope and the Plone CMS Available for Zope 2.12 and later on Windows, Linux, Mac OS X, FreeBSD and other platforms This announcement is also available on our web-site for online reading: http://www.egenix.com/company/news/eGenix-mxODBC-Zope-DA-2.0.1-GA.html INTRODUCTION The eGenix mxODBC Zope Database Adapter allows you to easily connect your Zope or Plone installation to just about any database backend on the market today, giving you the reliability of the commercially supported eGenix product mxODBC and the flexibility of the ODBC standard as middle-tier architecture. The mxODBC Zope Database Adapter is highly portable, just like Zope itself and provides a high performance interface to all your ODBC data sources, using a single well-supported interface on Windows, Linux, Mac OS X, FreeBSD and other platforms. This makes it ideal for deployment in ZEO Clusters and Zope hosting environments where stability and high performance are a top priority, establishing an excellent basis and scalable solution for your Plone CMS. NEWS We are pleased to announce a new version 2.0.1 of our mxODBC Zope DA product. With the patch level 2.0.1 release we have backported the mxODBC Zope DA product to also run on Zope 2.10, 2.11 as well as Python 2.4. This was done to meet popular demand, since Plone 3 still uses these Zope and Python versions. The mxODBC Zope DA is now fully compatible with all recent Plone versions, including the upcoming Plone 4.0 release. Please see the mxODBC Zope DA documentation for details on how to install the product for use in Plone. Compared to the previous 1.0 version of the mxODBC Zope DA, the 2.0 version includes these enhancements: * Includes mxODBC 3.1 with updated support for many current ODBC drivers, giving you more portability and features for a wider range of database backends. * Mac OS X 10.6 (Snow Leopard) support. * Python 2.4, 2.5 and 2.6 support. * Zope 2.10, 2.11 and 2.12 support. * Zero maintenance support to automatically reconnect the Zope connection after a network or database problem. * More flexible Unicode support with options to work with pure Unicode, plain strings or mixed setups - even for databases that don't support Unicode * Automatic and transparent text encoding and decoding * More flexible date/time support including options to work with Python datetime objects, mxDateTime, strings or tuples * New decimal support to have the Zope DA return decimal column values using Python's decimal objects. * Fully eggified to simplify easy_install and zc.buildout based installation UPGRADING Licenses purchased for version 2.0.0 of the mxODBC Zope DA will continue to work with the 2.0.1 patch level release. If you have already bought mxODBC Zope DA 1.0.x licenses, we offer you a time limited upgrade option: * If you have purchased the licenses between 2009-06-01 and 2009-12-31 you can get a 20% discount on the full price of version 2.0. * If you have purchased the licenses after 2010-01-01 you can get a 40% discount on the full price of version 2.0. This offer is time limited until 2010-09-30. Please write to sa...@egenix.com for details on how to get the needed discount coupons. MORE INFORMATION For more information on the mxODBC Zope Database Adapter, licensing and download instructions, please visit our web-site: http://www.egenix.com/products/zope/mxODBCZopeDA/ You can buy mxODBC Zope DA licenses online from the eGenix.com shop at: http://shop.egenix.com/ Thank you, -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Apr 23 2010) Python/Zope Consulting and Support ...http://www.egenix.com/ mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ mxODBC, mxDateTime, mxTextTools ...http://python.egenix.com/ ::: Try our new mxODBC.Connect Python Database Interface for free ! eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ -- http://mail.python.org/mailman/listinfo/python-list
py3 tkinter Text accepts what bytes?
Hello, I stumbled upon this one while porting some of my programs to Python 3.1. The program receives messages from a socket and displays them in a tkinter Text. Works fine in Python 2 and Python 3.1. The problems arrived when I wanted to know the details... First surprise: Text.insert accepts not only str but also bytes. So I looked into the sources to see how it is done. I found no magic in 'tkinter.__init__.py'. All python objects seem to go unchanged to _tkinter.c. There they are turned into Tcl objects using Tcl_NewUnicodeObj (for str) and Tcl_NewStringObj (for bytes). The man page for Tcl_NewStringObj says that it creates a tcl string from utf-8 encoded bytes. So I continued to test... Second surprise: Text.insert also works for latin-1 encoded bytes. It even works with mixed utf-8 and latin-1 encoded bytes. At least it works for me. Anyone can enlighten me, where this magic is done? Is it tcl magic or did I miss something in the python sources? Is this somewhere documented? Thanks for any hints, Matthias Kievernagel -- http://mail.python.org/mailman/listinfo/python-list
Re: Linux servers, network and file names
Hi Martin All, On Apr 23, 9:50 am, Martin P. Hellwig wrote: On 04/22/10 15:13, Infinity77 wrote: cut For me: //SERVER/gavana/Folder/FileName.txt Colleague: //SERVER/Colleague/Folder/FileName.txt So, no matter what I do, the file name stored in the database is user- dependent and not universal and common to all of us. If that user dependent part happens to be equal to the login name, then what you could do is replace is with the username variable (I believe %USERNAME% on windows) instead. The funny thing is that the user dependent part *is* the login name, but not the Windows one, it is the *Linux SERVER* one, and no mapping has been done between Windows logins and Linux usernames. IT... Anyway, it seems like Tim's suggestion is working (for the moment), so I'll stick with it as this network/filenames issue has already taken me a ridiculous amount of time to fix :-) Thank you guys for your help! Andrea. -- http://mail.python.org/mailman/listinfo/python-list
Re: how does a queue stop the thread?
On Apr 21, 6:08 pm, kaiix kvn@gmail.com wrote: A simple thread pool example. My question is, since *MyThread.run* will loop endless, how does the thread know the time to quit? how does the *queue* notify the thread? is there any shared variables, like a *lock*? When I set daemon false, it stays in the loop, not quit any more. what's the role does the daemon state plays? code: --- - import Queue import threading def do_some_thing(x): print int(x) class MyThread(threading.Thread): def __init__(self, queue): threading.Thread.__init__(self) self.queue = queue def run(self): while True: params = self.queue.get() do_some_thing(params) self.queue.task_done() q = Queue.Queue() for i in range(1, 5): t = MyThread(q) t.setDaemon(True) t.start() for x in range(10): q.put(x) q.join() Here's a slightly different example that demonstrates more clearly how to end each thread. http://effbot.org/librarybook/queue.htm -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter question
On Apr 23, 1:58 pm, Rotwang sg...@hotmail.co.uk wrote:
eb303 wrote:
On Apr 22, 5:55 pm, Rotwang sg...@hotmail.co.uk wrote:
[...]
From my experience, mixing Tkinter with threads is a bad idea. As most
GUI toolkits, it really doesn't like to be manipulated from different
threads, so you might end up getting weird problems or even crashes.
By the way, did you try to remove the line out.mainloop() from your
'draw' function?
I didn't. How do I get Python to display the draw window, other than by
using mainloop()?
Well, mainloop doesn't actually display anything. It's just the event
loop for tk. So since you run your program within IDLE, there is
already one running. What does it do if you delete the mainloop()
line? Doesn't your window appear at all?
This is the line that blocks the IDLE GUI, since it
initiates a secondary event loop that will only exit when you do a
out.quit(), so that might be a solution.
BTW, another problem: whenever I call a widget.quit() method, the widget
in question crashes. IDLE carries on working but the widget window stays
there, not responding, and if I tell my OS to kill it then IDLE
restarts. Is this a bug? I'm using Windows 7 and Python 2.6.4.
The 'quit' method just exits the mainloop. It doesn't destroy the
widget. So if your application doesn't actually exit, the widget will
just stay there. If you want to destroy the it too, you have to call
explicitely widget.destroy().
That worked like a charm, thanks!
Here's another problem I've run into today: I've just added a bit of
code so that it's possible to resize the draw window and the contents
will be resized automatically. The method now looks something like this:
out = Tkinter.Tk()
slave = Tkinter.Canvas(out, width = wh[0], height = wh[1])
slave.grid()
# I put the canvas widget inside a tk widget instead of just
# using the former because I want keypresses to do things, and
# it doesn't seem to be possible to bind keyboard events to a
# canvas
# draw something
slave.pack()
(Hope this line is a mistake: gridding *and* packing slave will
probably result in tk thinking for ages how it should display it in
its parent…)
def resize(b):
wh[:] = [b.width, b.height]
slave.config(width = wh[0], height = wh[1])
# resize the contents of slave
You don't need at all to resize the slave explicitely. You should do
the following:
- Tell 'out' that its first row and first column should resize
themselves when the window is resized by doing:
out.grid_rowconfigure(1, weight=1)
out.grid_columnconfigure(1, weight=1)
- Make sure slave is actually put in the cell in first row and column,
and that all its sides will stick to the cell borders:
slave.grid(row=1, column=1, sticky='nswe')
If you do that, the slave.config in the resize function shouldn't be
needed anymore.
out.bind('Configure', resize)
If using the grid options, better do a slave.bind(…) here, which will
call the binding when the canvas is resized, which is obvioulsy when
you want to update its contents.
out.mainloop()
The trouble is, when I call the method the window it spawns slowly grows
larger, until I move or resize it myself by grabbing one of the edges;
after this everything works as intended. If I add the line print wh
after wh[:] = [b.width, b.height], the output looks like this (the
default value of wh is [640,480]:
[644, 484]
[648, 488]
[648, 488]
[648, 488]
[652, 492]
[652, 492]
[652, 492]
[656, 496]
[656, 496]
[656, 496]
[660, 500]
etc.
My only guess as to why this is happening is that Tkinter is resizing
out to be 4 pixels wider and taller than slave, and the line
slave.config(...) consequently leads to resize being called again. But
this doesn't explain why it stops happening when I resize the window
intentionally, nor why the window apparently only gets larger every
third time resize is called. The problem goes away if I replace wh[:] =
[b.width, b.height] with
wh[:] = [b.width - 4, b.height - 4]
but this seems like a rather ad-hoc and ugly solution, and I'd rather
understand what's going on. Can anyone help?
You get the size for the outer window and apply it to the canvas
inside it. Since the canvas has a border which is 2 pixels wide by
default, this resizes the window containing it to take this border
into account. So your binding is called again, and so on… But using
the options to grid described above, there should never be any need to
resize the canvas explicitely.
HTH
- Eric -
--
http://mail.python.org/mailman/listinfo/python-list
Re: py3 tkinter Text accepts what bytes?
On Apr 23, 2:00 pm, Matthias Kievernagel mkie...@pirx.sirius.org wrote: Hello, I stumbled upon this one while porting some of my programs to Python 3.1. The program receives messages from a socket and displays them in a tkinter Text. Works fine in Python 2 and Python 3.1. The problems arrived when I wanted to know the details... First surprise: Text.insert accepts not only str but also bytes. So I looked into the sources to see how it is done. I found no magic in 'tkinter.__init__.py'. All python objects seem to go unchanged to _tkinter.c. There they are turned into Tcl objects using Tcl_NewUnicodeObj (for str) and Tcl_NewStringObj (for bytes). The man page for Tcl_NewStringObj says that it creates a tcl string from utf-8 encoded bytes. So I continued to test... Second surprise: Text.insert also works for latin-1 encoded bytes. It even works with mixed utf-8 and latin-1 encoded bytes. At least it works for me. Anyone can enlighten me, where this magic is done? Is it tcl magic or did I miss something in the python sources? Is this somewhere documented? Thanks for any hints, Matthias Kievernagel Let me guess: you're on Windows? ;-) There is nothing in the Python sources that can help you here. Everything is handled by the underlying tcl/tk interpreter. The default encoding for strings in tcl happens to be UTF-8. So putting bytestrings with a UTF-8 encoding in a Text widget will just work. For latin-1 strings, there is some magic going on, but apparently, this magic happens only on Windows (hence my guess above…), which seems to recognize its default encoding by some means. My advice is: don't count on it. It won't work on any other platform, and it might even stop working on Windows one day. HTH - Eric - -- http://mail.python.org/mailman/listinfo/python-list
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SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD CELEBERITIES SEXY HOLLYWOOD GIRLS SEXY BIKINI GIRLS SEXY CHINESE GIRLS SEXY PAKISTANI GIRLS SEXY INDIAN GIRLS on http://hollywood6y.blogspot.com/ SEXY CAMRON SEXY PRETTY CAMERON SEXY HOT HOLLYWOOD STARS HOT HOLLYWWOD
Re: Hi, friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums?
On 2010-04-22, D'Arcy J.M. Cain da...@druid.net wrote: On Thu, 22 Apr 2010 15:04:01 +0100 Tim Golden m...@timgolden.me.uk wrote: So please tell me if there is one or not. I really need this soon. Appreciate a lot. Assuming top-k doesn't mean something obscurely statistical: You really shouldn't do people's homework for them. It doesn't do them any favours. Doing people's homework for them is a survival mechanism -- it reduces the competence of potential new rivals. :) OTOH, if you do end up working with one of those a new grads with a diploma but not a clue, you end up worse off because now you have to teach them the problem solving skills they didn't learn in school. -- Grant Edwards grant.b.edwardsYow! I just had a NOSE at JOB!! gmail.com -- http://mail.python.org/mailman/listinfo/python-list
Difficulty w/json keys
My apologies for what is probably a simple question to most on this
group. However, I am new to python and very new to json.
I am trying to read in a json file from a twitter download. There are,
generally, two types of lines: those lines with text and the other
lines. I am only interested in the lines with text. I am also only
interested in lines with lang:en, but I haven't gotten far enough
to implement that condition in the code snippets below.
I have gotten Option 2 below to sort of work. It works fine for
'text', but doesn't work for 'lang'.
FWIW I am using Python 2.6.4
Can someone tell me what I'm doing wrong with the following code
snippets and/or point me toward an example of an implementation?
Many thanks for your patience.
-
import sys
import json
f = open(sys.argv[1])
#option 1
for line in f:
j = json.loads(line)
try:
'text' in j
print TEXT: , j
except:
print EXCEPTION: , j
continue
else:
text=j['text']
snip
#option 2 does basically the same thing as option 1 , but also looks
for 'lang'
for line in f:
j = json.loads(line)
if 'text' in j:
if 'lang' in j:
lang = j['lang']
print language, lang
text = j['text']
snip
-- Two Sample Twitter lines -
{text:tech managers what size for your teams? better to have 10-20
ppl per manager or 2-5 and have the managers be more hands
on?,in_reply_to_user_id:null,coordinates:null,geo:null,created_at:Thu
Apr 22 17:35:42 + 2010,contributors:null,source:a href=
\http://twitterfeed.com\; rel=\nofollow\twitterfeed/
a,in_reply_to_status_id:null,place:null,truncated:false,in_reply_to_screen_name:null,user:
{favourites_count:
0,profile_text_color:00,time_zone:Eastern Time (US
Canada),created_at:Tue Oct 27 19:50:51 +
2009,statuses_count:
286,notifications:null,profile_link_color:ff,description:I
write code and talk to people.
,lang:en,profile_background_image_url:http://s.twimg.com/a/
1271891196/images/themes/theme1/bg.png,profile_image_url:http://
s.twimg.com/a/1271891196/images/
default_profile_0_normal.png,location:Near the
water.,contributors_enabled:false,following:null,geo_enabled:false,profile_sidebar_fill_color:e0ff92,profile_background_tile:false,screen_name:sstatik,profile_sidebar_border_color:87bc44,followers_count:
40,protected:false,verified:false,url:http://
elliotmurphy.com/,name:statik,friends_count:18,id:
85646316,utc_offset:-18000,profile_background_color:9ae4e8},id:
12651537502,favorited:false}
{delete:{status:{id:12650137902,user_id:128090723}}}
--
http://mail.python.org/mailman/listinfo/python-list
font change
Q1. I want to change the font of the menu . I want to write the menu items like File in my native language.I was successful writing the text in the window in my font. But I am not able to write the menu items in same font. In fact I am not able to find how to change the font of the menu. I am using wx module of wxPython. Q2. A white window is seen when i execute the program it says wxPython:stdout/stderr what is that ? and how to get rid of it ? Thanks in advance. -- Regrads , Vikram Moule -- http://mail.python.org/mailman/listinfo/python-list
Re: py3 tkinter Text accepts what bytes?
eb303 eric.brunel.pragma...@gmail.com wrote: On Apr 23, 2:00 pm, Matthias Kievernagel mkie...@pirx.sirius.org wrote: Hello, I stumbled upon this one while porting some of my programs to Python 3.1. The program receives messages from a socket and displays them in a tkinter Text. Works fine in Python 2 and Python 3.1. The problems arrived when I wanted to know the details... First surprise: Text.insert accepts not only str but also bytes. So I looked into the sources to see how it is done. I found no magic in 'tkinter.__init__.py'. All python objects seem to go unchanged to _tkinter.c. There they are turned into Tcl objects using Tcl_NewUnicodeObj (for str) and Tcl_NewStringObj (for bytes). The man page for Tcl_NewStringObj says that it creates a tcl string from utf-8 encoded bytes. So I continued to test... Second surprise: Text.insert also works for latin-1 encoded bytes. It even works with mixed utf-8 and latin-1 encoded bytes. At least it works for me. Anyone can enlighten me, where this magic is done? Is it tcl magic or did I miss something in the python sources? Is this somewhere documented? Thanks for any hints, Matthias Kievernagel Let me guess: you're on Windows? ;-) There is nothing in the Python sources that can help you here. Everything is handled by the underlying tcl/tk interpreter. The default encoding for strings in tcl happens to be UTF-8. So putting bytestrings with a UTF-8 encoding in a Text widget will just work. For latin-1 strings, there is some magic going on, but apparently, this magic happens only on Windows (hence my guess above???), which seems to recognize its default encoding by some means. My advice is: don't count on it. It won't work on any other platform, and it might even stop working on Windows one day. HTH - Eric - Thanks for the info, Eric. Funny it's working for me, because I'm on Linux. So I'll take a look at the tcl/tk sources (8.4 btw.) I don't like this magic at all, run-time errors waiting for you at the most inconvenient moment. Best regards, Matthias Kievernagel. -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
Red wrote:
My apologies for what is probably a simple question to most on this
group. However, I am new to python and very new to json.
I am trying to read in a json file from a twitter download. There are,
generally, two types of lines: those lines with text and the other
lines. I am only interested in the lines with text. I am also only
interested in lines with lang:en, but I haven't gotten far enough
to implement that condition in the code snippets below.
I have gotten Option 2 below to sort of work. It works fine for
'text', but doesn't work for 'lang'.
FWIW I am using Python 2.6.4
Can someone tell me what I'm doing wrong with the following code
snippets and/or point me toward an example of an implementation?
Many thanks for your patience.
-
import sys
import json
f = open(sys.argv[1])
#option 1
for line in f:
j = json.loads(line)
try:
'text' in j
print TEXT: , j
except:
print EXCEPTION: , j
continue
else:
text=j['text']
snip
#option 2 does basically the same thing as option 1 , but also looks
for 'lang'
for line in f:
j = json.loads(line)
if 'text' in j:
if 'lang' in j:
lang = j['lang']
print language, lang
text = j['text']
snip
-- Two Sample Twitter lines -
{text:tech managers what size for your teams? better to have 10-20
ppl per manager or 2-5 and have the managers be more hands
on?,in_reply_to_user_id:null,coordinates:null,geo:null,created_at:Thu
Apr 22 17:35:42 + 2010,contributors:null,source:a href=
\http://twitterfeed.com\; rel=\nofollow\twitterfeed/
a,in_reply_to_status_id:null,place:null,truncated:false,in_reply_to_screen_name:null,user:
{favourites_count:
0,profile_text_color:00,time_zone:Eastern Time (US
Canada),created_at:Tue Oct 27 19:50:51 +
2009,statuses_count:
286,notifications:null,profile_link_color:ff,description:I
write code and talk to people.
,lang:en,profile_background_image_url:http://s.twimg.com/a/
1271891196/images/themes/theme1/bg.png,profile_image_url:http://
s.twimg.com/a/1271891196/images/
default_profile_0_normal.png,location:Near the
water.,contributors_enabled:false,following:null,geo_enabled:false,profile_sidebar_fill_color:e0ff92,profile_background_tile:false,screen_name:sstatik,profile_sidebar_border_color:87bc44,followers_count:
40,protected:false,verified:false,url:http://
elliotmurphy.com/,name:statik,friends_count:18,id:
85646316,utc_offset:-18000,profile_background_color:9ae4e8},id:
12651537502,favorited:false}
{delete:{status:{id:12650137902,user_id:128090723}}}
I can't help you directly with your problem but have you seen this:
http://arstechnica.com/open-source/guides/2010/04/tutorial-use-twitters-new-real-time-stream-api-in-python.ars
Regards, Jim
--
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Re: python 2.6 py2exe wx app fails
On 22/04/2010 13:56, Robin Becker wrote: I'm trying to move a wxPython application forward to 2.6, but although the app runs fine in 2.6 when run directly when I build the app into an exe using py2exe I get this popup message application failed to initialize properly (0xc142) when I try to run the built exe. The same application seems to build and run fine with python 2.5 py2exe. I've tried various googled solutions, but none seem to work. I do notice that the standard py2exe samples/advanced test_wx.exe also fails when built in this way. I'm guessing this may be due to some obscure exe requirement with manifests or something which varies depending on the base msvc library. Any help much appreciated. After much faffing about I managed to make this work, it seems that the instructions here http://www.py2exe.org/index.cgi/Tutorial#Step52 aren't complete; for python 2.6 in addition to changing the runtime dll setup so that we copy MSVCR90.dll Microsoft.VC90.CRT.manifest to a toplevel folder Microsoft.VC90.CRT, we also need to modify the embedded manifest to include an additional dependency ie dependency dependentAssembly assemblyIdentity type=win32 name=Microsoft.VC90.CRT version=9.0.21022.8 processorArchitecture=x86 publicKeyToken=1fc8b3b9a1e18e3b / /dependentAssembly /dependency that seems to make the exe workable again. I did actually see this in a google, but it was for a different version of the dll so did not work when I first tried it. -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
On Fri, Apr 23, 2010 at 10:20 AM, Red wanderingaen...@comcast.net wrote: [...] for line in f: j = json.loads(line) if 'text' in j: if 'lang' in j: lang = j['lang'] print language, lang text = j['text'] lang key is in user dict tweet['text'] 'tech managers what size for your teams? better to have 10-20 ppl per manager or 2-5 and have the managers be more hands on?' tweet['lang'] [...] KeyError: 'lang' tweet['user']['lang'] 'en' ~Rolando -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
You need to know what your input data actually looks like, and the best
thing for that is a little bit of formatting. I bet you can figure out
the problem yourself, once you see the structure of your data more
clearly. I've reformatted the JSON for you to help out.
On Fri, 2010-04-23 at 07:20 -0700, Red wrote:
-- Two Sample Twitter lines -
{
text:tech managers what size for your teams? better to have 10-20
ppl per manager or 2-5 and have the managers be more hands
on?,
in_reply_to_user_id:null,
coordinates:null,
geo:null,
created_at:Thu Apr 22 17:35:42 + 2010,
contributors:null,
source:a href=\http://twitterfeed.com\; rel=\nofollow
\twitterfeed/a,
in_reply_to_status_id:null,
place:null,
truncated:false,
in_reply_to_screen_name:null,
user: {
favourites_count:0,
profile_text_color:00,
time_zone:Eastern Time (US Canada),
created_at:Tue Oct 27 19:50:51 + 2009,
statuses_count: 286,
notifications:null,
profile_link_color:ff,
description:I write code and talk to people.,
lang:en,
profile_background_image_url:http://s.twimg.com/a/
1271891196/images/themes/theme1/bg.png,
profile_image_url:http://s.twimg.com/a/1271891196/images/
default_profile_0_normal.png,
location:Near the water.,
contributors_enabled:false,
following:null,
geo_enabled:false,
profile_sidebar_fill_color:e0ff92,
profile_background_tile:false,
screen_name:sstatik,
profile_sidebar_border_color:87bc44,
followers_count: 40,
protected:false,
verified:false,
url:http://elliotmurphy.com/;,
name:statik,
friends_count:18,
id:85646316,
utc_offset:-18000,
profile_background_color:9ae4e8
},
id: 12651537502,
favorited:false
}
{
delete: {
status:{
id:12650137902,
user_id:128090723
}
}
}
--
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[Python3] Reading a binary file and wrtiting the bytes verbatim in an utf-8 file
Hello. I have to read the contents of a binary file (a PNG file exactly), and dump it into an RTF file. The RTF-file has been opened with codecs.open in utf-8 mode. As I expected, the utf-8 decoder chokes on some combinations of bits; how can I tell python to dump the bytes as they are, without interpreting them? Thanks. -- Fabrice DELENTE -- http://mail.python.org/mailman/listinfo/python-list
Re: Making special method names, work with __getattr__
On Fri, Apr 23, 2010 at 2:41 AM, Antoon Pardon apar...@forel.vub.ac.be wrote:
The following is a proof of concept. The idea is to have variables that
represent symbolic names/expressions, you can work with like ordinary
values, but that can be evaluated later.
This is the code:
import operator
from functools import partial
class Expression (object) :
def __add__(self, term):
return Binary(self, operator.__add__, term)
def __getattr__(self, name):
op = getattr(operator, name)
return partial(Binary, self, op)
class Binary (Expression) :
def __init__(self, left, op, right):
self.left = left
self.operator = op
if not isinstance(right, Expression):
right = Value(right)
self.right = right
def eval(self, dct):
left = self.left.eval(dct)
right = self.right.eval(dct)
return self.operator(left, right)
class Symbol (Expression):
def __init__(self, name):
self.name = name
def eval(self, dct={}):
return dct[self.name]
class Value (Expression):
def __init__(self, val):
self.value = val
def eval(self, dct={}):
return self.value
def test():
dct = {var1 : 5, var2 : 7}
val1 = Symbol(var1)
val2 = Symbol(var2)
print val1.eval(dct)
sum = val1 + 3
print sum.eval(dct)
sum = sum + val2
print sum.eval(dct)
product = val1 * 7
print product.eval(dct)
test()
--
The result I get is:
5
8
15
Traceback (most recent call last):
File Symbolics, line 54, in module
test()
File Symbolics, line 51, in test
product = val1 * 7
TypeError: unsupported operand type(s) for *: 'Symbol' and 'int'
What I had hoped for was, that the line:
product = val1 * 7
would be translated into something like
product = val1.__mul__(7)
That's basically correct.
which would then be treated by the __getattr__ of the Expression superclass.
That doesn't seem to happen.
Indeed it doesn't. The lookup of fouble-underscore special methods
bypasses __getattribute__() and friends. For details, see
http://docs.python.org/reference/datamodel.html#special-method-lookup-for-new-style-classes
Does anyone have another idea, so I can get this to work without having
to manually add all numeric special methods to the Expression class.
You could write a decorator to make it a bit less painful/repetitive,
but no, you're gonna have to define all the methods individually.
Cheers,
Chris
--
http://blog.rebertia.com
--
http://mail.python.org/mailman/listinfo/python-list
Re: Hi, friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums?
Really! Learn to use google better. I just used python sort list Look at: http://wiki.python.org/moin/HowTo/Sorting Read about list.sort. Try, at a command prompt (assuming you have a unix shell), pydoc list search for sort; read it. It mentions 'reverse'. then slice the list to your desired set and return. sph On 04/23/2010 07:02 AM, Grant Edwards wrote: On 2010-04-22, D'Arcy J.M. Cainda...@druid.net wrote: On Thu, 22 Apr 2010 15:04:01 +0100 Tim Goldenm...@timgolden.me.uk wrote: So please tell me if there is one or not. I really need this soon. Appreciate a lot. Assuming top-k doesn't mean something obscurely statistical: You really shouldn't do people's homework for them. It doesn't do them any favours. Doing people's homework for them is a survival mechanism -- it reduces the competence of potential new rivals. :) OTOH, if you do end up working with one of those a new grads with a diploma but not a clue, you end up worse off because now you have to teach them the problem solving skills they didn't learn in school. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python3] Reading a binary file and wrtiting the bytes verbatim in an utf-8 file
On Fri, Apr 23, 2010 at 9:22 AM, f...@slick.airforce-one.org wrote:
I have to read the contents of a binary file (a PNG file exactly), and
dump it into an RTF file.
The RTF-file has been opened with codecs.open in utf-8 mode.
As I expected, the utf-8 decoder
You mean encoder.
chokes on some combinations of bits;
Well yeah, it's supposed to be getting *characters*, not bytes.
how can I tell python to dump the bytes as they are, without
interpreting them?
Go around the encoder and write bytes directly to the file:
# Disclaimer: Completely untested
import codecs
raw_rtf = open(path/to/rtf.rtf, 'w')
png = open(path/to/png.png, 'r')
writer_factory = codecs.getwriter('utf-8')
encoded_rtf = writer_factory(raw_rtf)
encoded_rtf.write(uwhatever text we want) # use unicode
# ...write more text...
# flush buffers
encoded_rtf.reset()
raw_rtf.flush()
raw_rtf.write(png.read()) # write from bytes to bytes
raw_rtf.close()
#END code
I have no idea how you'd go about reading the contents of such a file
in a sensible way.
Cheers,
Chris
--
http://blog.rebertia.com
--
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DLLs loading in interpreter but not with direct run on Windows
Hi, I've got a weird problem, apparently related to the way python searches for DLLs on Windows. I compiled PyQt4 (no errors) but scripts that use it fail with DLL load failed: Invalid access to memory location. If I play with loading the modules inside the interpreter, I see no errors. Even more, if I use IDLE, running scripts fails. However, if I _first_ type from PyQt4 import QtGui in the python shell, the script executes without problems. What is the difference between these two cases? How is loading dlls different in ( $ python script.py ) and just ( $ python )? Thanks, Tim. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python3] Reading a binary file and wrtiting the bytes verbatim in an utf-8 file
On Fri, Apr 23, 2010 at 9:48 AM, Chris Rebert c...@rebertia.com wrote: On Fri, Apr 23, 2010 at 9:22 AM, f...@slick.airforce-one.org wrote: I have to read the contents of a binary file (a PNG file exactly), and dump it into an RTF file. snip how can I tell python to dump the bytes as they are, without interpreting them? Go around the encoder and write bytes directly to the file: # Disclaimer: Completely untested snip encoded_rtf.write(uwhatever text we want) # use unicode Erm, sorry, since you're apparently using Python 3.x, that line should have been just: encoded_rtf.write(whatever text we want) # use unicode Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python3] Reading a binary file and wrtiting the bytes verbatim ?in an utf-8 file
Thanks, I'll try this. I have no idea how you'd go about reading the contents of such a file in a sensible way. The purpose is to embed PNG pictures in an RTF file that will be read by OpenOffice. It seems that OpenOffice reads RTF in 8-bit, so it should be ok. The RTF is produced from a TeX source file encoded in UTF-8, that's why I mix unicode and 8-bit. -- Fabrice DELENTE -- http://mail.python.org/mailman/listinfo/python-list
Re: Pydev 1.5.6 Released (Django Integration)
Pydev 1.5.6 has been released Details on Pydev: http://pydev.org Details on its development: http://pydev.blogspot.com Question, Does it have a feature to evaluate the current edit buffer and continue with an interactive prompt? Yes. See: http://pydev.org/manual_adv_interactive_console.html Cheers, Fabio -- http://mail.python.org/mailman/listinfo/python-list
Re: question about an exciting gotcha for unittests (and elsewhere) ...
On 4/23/2010 8:03 AM, Cameron Simpson wrote: On 23Apr2010 13:25, Peter Otten__pete...@web.de wrote: | Move the unit tests into a separate script and have that import the module | cs.nodedb.node. Hmm. I have been very attracted by the idea of having the unittest in the module itself, and run if I run the module alone (instead of importing it). I do this too. edit, run (F5 in IDLE), (click back to edit window) edit, run, ... several times in an hour. Very nice. But... I have simpler modules (function, not class definitions) and no circular imports. So I was thinking the same thing Peter said for your case. Conversely, I've also got a few modules that are standalone programs and running _then_ runs the app, not a bunch of tests. Having the tests elsewhere would solve the problem as you say; an import of the module is what real code will be doing and, as my misadventure above demonstrates, that's a different thing as far as namespaces go. | In general, avoid importing a module and at the same time using it as the | main script. Fsir enough - that's a succinct description of what I did wrong. Several people have posted problems that amount to this. An 'exciting gotcha' indeed ;-). Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
On 4/23/2010 10:20 AM, Red wrote: My apologies for what is probably a simple question to most on this group. However, I am new to python and very new to json. I am trying to read in a json file from a twitter download. There are, generally, two types of lines: those lines with text and the other lines. I am only interested in the lines with text. I am also only interested in lines with lang:en, but I haven't gotten far enough to implement that condition in the code snippets below. I have gotten Option 2 below to sort of work. It works fine for 'text', but doesn't work for 'lang'. You do not define 'work', 'sort of work', and doesn't work. FWIW I am using Python 2.6.4 Can someone tell me what I'm doing wrong with the following code snippets and/or point me toward an example of an implementation? Many thanks for your patience. - import sys import json f = open(sys.argv[1]) #option 1 for line in f: j = json.loads(line) try: 'text' in j This does not raise an exception when false print TEXT: , j so this should always print. Forget this option. except: print EXCEPTION: , j continue else: text=j['text'] snip #option 2 does basically the same thing as option 1 , Not at all when 'text' in not in j. but also looks for 'lang' for line in f: j = json.loads(line) if 'text' in j: if 'lang' in j: lang = j['lang'] print language, lang text = j['text'] snip tjr -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
On 4/23/2010 10:51 AM, Jim Byrnes wrote: I can't help you directly with your problem but have you seen this: http://arstechnica.com/open-source/guides/2010/04/tutorial-use-twitters-new-real-time-stream-api-in-python.ars Yes. Ignore the part about push versus pull (you are already doing the latter) and just look at the processing examples. -- http://mail.python.org/mailman/listinfo/python-list
Re: question about an exciting gotcha for unittests (and elsewhere) ...
En Fri, 23 Apr 2010 03:15:16 -0300, Cameron Simpson c...@zip.com.au escribió: On 23Apr2010 15:37, I wrote: | Experienced users will see at once what's happened: I've made a Node | myself in the test using the local class, and the Node class is thus | __main__.Node. However, my sql Backend class has independently imported | the Node and Backend classes from cs.nodedb.node. So when _it_ | calls serialise(), Node is cs.nodedb.node.Node. [...] A walk around the block and I'm thinking the olny sane way to do this is to use relative imports, to always get the sqla.py module from the same place as the node.py where the test lives, and likewise in sqla.py to relatively import node.py to get its matching file. Another way is to split the test code and move it into its own module. This way, the testing code will import the node module the same way the real application would do. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter question
eb303 wrote:
On Apr 23, 1:58 pm, Rotwang sg...@hotmail.co.uk wrote:
[...]
I didn't. How do I get Python to display the draw window, other than by
using mainloop()?
Well, mainloop doesn't actually display anything. It's just the event
loop for tk. So since you run your program within IDLE, there is
already one running. What does it do if you delete the mainloop()
line? Doesn't your window appear at all?
No.
[...]
Here's another problem I've run into today: I've just added a bit of
code so that it's possible to resize the draw window and the contents
will be resized automatically. The method now looks something like this:
out = Tkinter.Tk()
slave = Tkinter.Canvas(out, width = wh[0], height = wh[1])
slave.grid()
# I put the canvas widget inside a tk widget instead of just
# using the former because I want keypresses to do things, and
# it doesn't seem to be possible to bind keyboard events to a
# canvas
# draw something
slave.pack()
(Hope this line is a mistake: gridding *and* packing slave will
probably result in tk thinking for ages how it should display it in
its parent…)
Not a mistake so much as a symptom of my inept, cargo-cult approach to
programming. Needless to say you're correct that it shouldn't be there,
though taking it out doesn't give a noticeable improvement in
performance (perhaps because the canvas is the only thing there so
there's no conflict).
def resize(b):
wh[:] = [b.width, b.height]
slave.config(width = wh[0], height = wh[1])
# resize the contents of slave
You don't need at all to resize the slave explicitely. You should do
the following:
- Tell 'out' that its first row and first column should resize
themselves when the window is resized by doing:
out.grid_rowconfigure(1, weight=1)
out.grid_columnconfigure(1, weight=1)
- Make sure slave is actually put in the cell in first row and column,
and that all its sides will stick to the cell borders:
slave.grid(row=1, column=1, sticky='nswe')
If you do that, the slave.config in the resize function shouldn't be
needed anymore.
Indeed! That works great.
out.bind('Configure', resize)
If using the grid options, better do a slave.bind(…) here, which will
call the binding when the canvas is resized, which is obvioulsy when
you want to update its contents.
Right, though before you suggested making the sides of the canvas
sticky, resizing the window didn't reconfigure slave.
[...]
You get the size for the outer window and apply it to the canvas
inside it. Since the canvas has a border which is 2 pixels wide by
default, this resizes the window containing it to take this border
into account. So your binding is called again, and so on… But using
the options to grid described above, there should never be any need to
resize the canvas explicitely.
Thanks very much for your help.
--
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Re: Smtpd module
En Fri, 23 Apr 2010 06:30:42 -0300, Johny pyt...@hope.cz escribió: I would like to use smtpd module to write very simple smtp server but this server must: 1. accept several connections at the same time( like a forking server) I think asyncore takes care of that. 2. have basic authentication that is it must understand AUTH command. I think there was a recipe doing AUTH in code.activestate.com -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling multiple programs with subprocess
On Thu, Apr 22, 2010 at 10:12:47PM -0400, Dave Angel wrote: amit wrote: How does one go about calling multiple programs using subprocess? This is the program flow: C:\ wrenv.exe C:\ make clean .. .. The 'wrenv.exe' is necessary since it sets up the proper environment for building. How do I use subprocess to execute 'wrenv.exe' and then the 'make clean' command. Any help is appreciated. Thanks, Amit One way is to write a batch file (since you're on Windows), and execute that with shell=True. It's not the only way, or the most efficient. But it's most likely to work, without knowing anything more about those two programs. DaveA Thanks Dave. That's actually a good idea and in this case probably the only way that this would work. I can auto-generate the batch file from the python script with the parameters that I need and just execute that with the subprocess. I wish there was a cleaner was as well. But thanks for tip! Amit -- http://mail.python.org/mailman/listinfo/python-list
Re: On Class namespaces, calling methods
In article 4bc120bd$0$8850$c3e8...@news.astraweb.com, Steven D'Aprano st...@remove-this-cybersource.com.au wrote: I can only think of two circumstances where old-style classes are *wrong*: if you use multiple inheritance with a diamond diagram (...now you have THREE problems *wink*), if you intend using descriptors such as properties, or if you need __slots__. That's three circumstances: multiple inheritance with a diamond diagram, descriptors, __slots__, and __getattribute__. Four circumstances. Any other time, they're merely discouraged, and gone in Python 3.x. Discouraged by some people. I certainly encourage the use of old-style classes unless there's a specific reason to use new-style classes. -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ It is easier to optimize correct code than to correct optimized code. --Bill Harlan -- http://mail.python.org/mailman/listinfo/python-list
Re: csv.py sucks for Decimal
On Apr 22, 5:03 pm, MRAB pyt...@mrabarnett.plus.com wrote: It might be a stupid question, but have you tried passing in the Decimal() object itself? Yep. Nope. Might as well (we ain't working today). But sorry, as usual, for my tone, and thanks all for playing! -- http://mail.python.org/mailman/listinfo/python-list
Re: csv.py sucks for Decimal
On Apr 22, 6:15 pm, Jerry Hill malaclyp...@gmail.com wrote: 10,10.0,10.00,10 That's an int, a float, a Decimal and a string, all of which appear to be formatted as I would expect. When you point your finger 'cause your plan fell thru you got three more fingers, pointing back at you! --Dire Straights -- http://mail.python.org/mailman/listinfo/python-list
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problem when running .py file
Dear Officer, I first apologize that I am totally new for python. I have downloaded a code packet “triMC3D” from online, and within it there is a file “configuration.py”.I downloaded and installed python and some related packages, tried very hard, but there is still the following error: the Traceback (most recent call last): File E:\TingTing\triMC3D-1.0.0\python\configuration.py, line 8, in ? from tables import * File C:\Python23\Lib\site-packages\tables\__init__.py, line 31, in ? from tables.utilsExtension import getPyTablesVersion, getHDF5Version ImportError: DLL load failed: The specified procedure could not be found. The first attached The system of my computer is Windows XP. The first attached file is the README file for triMC3D code. It says they used python 2.3 so I used the version python-2.3.5. The second attached is the file “configuration.py” I want to run. I sincerely hope that you could try to run it, see what is the problem and give me some tips. -- Best regards, Sofia ETSI de Telecomunicación - office C-203-1 Dpto. Ingeniería Electrónica Ciudad Universitaria s/n Madrid 28040, Spain TEL: +34 65 232 4340 triMC3D -- Monte Carlo simulation environment for heterogeneous turbid media. The geometry is described by a triangle mesh, which allows for computation of reflection/refraction effects at different tissue layers. Features: * Arbitrary geometries importable from STL format. * Easy generation of analytical shapes using python * Calculation of light fluence/absorbance whithin the medium. * Calculation and storage of photon paths with time-resolved information. * HDF5 format for neat data input and output. TODO: * Optimize the spatial organisation of triangles. * Hardware acceleration of ray-triangle intersection functions. * Introduction of new phase functions. * Addition of more source functions. * Incorporation of polarisation handling Compilation --- triMC3D depends on several libraries in order to be built: * libhdf5 and libhdf5_hl * libgsl * an MPI implementation, like mpich2, in order to compile the parallel version Furthermore, python 2.3 and packets pytables, scipy, VTK and numarray/numpy are extensively used for model preparation and post-processing of simulation data. Usage - There are several options in order to deal with input and output files for triMC3D (HDF5 data format). Among the programs and libraries that can be used to this end, the following are probably most useful: * Python + PyTables * Matlab + HDF5 access library * IDL + HDF library * HDFview * HDF tools from NCSA * Paraview for fast data visualisation #!/usr/bin/python Add a configuration entry to the parameters import sys import array import struct import math import numarray from tables import * from local_modules import hdf5 def create_config(file_id): try: table = file_id.root.Configuration except Exception: table = file_id.createTable(file_id.root, 'Configuration', hdf5.Configuration, Simulation Parameters) c1 = table.row c1[idnumber] = 1 c1[num_phots] = 1000 c1[descr] = Background Illumination c1[bin_size] = 2e-4 c1[out_file] = outtest.h5 c1[src_type] = gaussian c1[src_dir]= (0, 0, 1) c1[src_pos]= (0, 0,-2.1e-3 ) c1[sim_type] = hdf5.sim_types[Incoherent] c1[extra_params] = 0 c1.append() table.flush() def create_extra(file_id): try: table = file_id.root.EXTRAParams except Exception: table = file_id.createTable(file_id.root, 'EXTRAParams', hdf5.EXTRAParam, EXTRA Parameters) p1 = table.row p1[idnumber] = 0 p1[mode] = hdf5.extra_modes[Limited] p1[Li_limit] = 5 p1.append() table.flush() def main(): if len(sys.argv) 2: print( Usage: + sys.argv[0] + H5file.h5) sys.exit(1) file_id = openFile(sys.argv[1],mode = r+) create_config(file_id) create_extra(file_id) if __name__ == __main__: main() -- http://mail.python.org/mailman/listinfo/python-list
Re: when should I explicitly close a file?
On Fri, 23 Apr 2010 13:19:41 +0200, Alf P. Steinbach wrote: But for a literal context-free interpretation e.g. the 'sys.getrefcount' function is not documented as CPython only and thus an implementation that didn't do reference counting would not be a conforming Python implementation. Since Jython and IronPython are conforming Python implementations, and Guido has started making policy decisions specifically to support these other implementations (e.g. the language feature moratorium, PEP 3003), I think we can assume that this is a documentation bug. However, a Python implementation that always returned 0 for sys.getrefcount would technically satisfy the word of the documentation, if not the spirit. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Difficulty w/json keys
Thanks to Cliff and Rolando who saw where my real problem was.
Terry,Jim: I had not seen the tutorial before, so I'll have to dig
into that as well. So little time.
Cheers
On Apr 23, 10:06 am, J. Cliff Dyer j...@sdf.lonestar.org wrote:
You need to know what your input data actually looks like, and the best
thing for that is a little bit of formatting. I bet you can figure out
the problem yourself, once you see the structure of your data more
clearly. I've reformatted the JSON for you to help out.
On Fri, 2010-04-23 at 07:20 -0700, Red wrote:
-- Two Sample Twitter lines -
{
text:tech managers what size for your teams? better to have 10-20
ppl per manager or 2-5 and have the managers be more hands
on?,
in_reply_to_user_id:null,
coordinates:null,
geo:null,
created_at:Thu Apr 22 17:35:42 + 2010,
contributors:null,
source:a href=\http://twitterfeed.com\; rel=\nofollow
\twitterfeed/a,
in_reply_to_status_id:null,
place:null,
truncated:false,
in_reply_to_screen_name:null,
user: {
favourites_count:0,
profile_text_color:00,
time_zone:Eastern Time (US Canada),
created_at:Tue Oct 27 19:50:51 + 2009,
statuses_count: 286,
notifications:null,
profile_link_color:ff,
description:I write code and talk to people.,
lang:en,
profile_background_image_url:http://s.twimg.com/a/
1271891196/images/themes/theme1/bg.png,
profile_image_url:http://s.twimg.com/a/1271891196/images/
default_profile_0_normal.png,
location:Near the water.,
contributors_enabled:false,
following:null,
geo_enabled:false,
profile_sidebar_fill_color:e0ff92,
profile_background_tile:false,
screen_name:sstatik,
profile_sidebar_border_color:87bc44,
followers_count: 40,
protected:false,
verified:false,
url:http://elliotmurphy.com/;,
name:statik,
friends_count:18,
id:85646316,
utc_offset:-18000,
profile_background_color:9ae4e8
},
id: 12651537502,
favorited:false}
{
delete: {
status:{
id:12650137902,
user_id:128090723
}
}
}
--
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Re: Difficulty w/json keys
On Apr 23, 1:17 pm, Terry Reedy tjre...@udel.edu wrote: On 4/23/2010 10:20 AM, Red wrote: My apologies for what is probably a simple question to most on this group. However, I am new to python and very new to json. I am trying to read in a json file from a twitter download. There are, generally, two types of lines: those lines with text and the other lines. I am only interested in the lines with text. I am also only interested in lines with lang:en, but I haven't gotten far enough to implement that condition in the code snippets below. I have gotten Option 2 below to sort of work. It works fine for 'text', but doesn't work for 'lang'. You do not define 'work', 'sort of work', and doesn't work. FWIW I am using Python 2.6.4 Can someone tell me what I'm doing wrong with the following code snippets and/or point me toward an example of an implementation? Many thanks for your patience. - import sys import json f = open(sys.argv[1]) #option 1 for line in f: j = json.loads(line) try: 'text' in j This does not raise an exception when false print TEXT: , j so this should always print. Forget this option. except: print EXCEPTION: , j continue else: text=j['text'] snip #option 2 does basically the same thing as option 1 , Not at all when 'text' in not in j. but also looks for 'lang' for line in f: j = json.loads(line) if 'text' in j: if 'lang' in j: lang = j['lang'] print language, lang text = j['text'] snip tjr I need to think about the logic here again and see what I'm missing beyond my original question. Thanks for taking the time to explain. -- http://mail.python.org/mailman/listinfo/python-list
Re: Smtpd module
Hello, I would like to use smtpd module to write very simple smtp server but this server must: 1. accept several connections at the same time( like a forking server) 2. have basic authentication that is it must understand AUTH command. Does anyone know if the smtpd module have both? http://twistedmatrix.com/documents/current/mail/tutorial/smtpclient/smtpclient.html HTH, -- Miki -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get live streaming of friends tweets??
http://arstechnica.com/open-source/guides/2010/04/tutorial-use-twitters-new-real-time-stream-api-in-python.ars
has some explanations about how to use real-time stream API
eka (Esteban) ekagauranga...@gmail.com writes:
IMO the real time update is your work to do.
You can poll, to say, each 1 minute or less and then you will have
your real time tweets update.
On Apr 14, 9:08 am, Harshad Joshi firewal...@gmail.com wrote:
import twython.core as twython, pprint
import codecs
# Authenticate using Basic (HTTP) Authentication
twitter = twython.setup(username='yourname', password='yourpassword')
friends_timeline = twitter.getFriendsTimeline(count=60, page=2)
a=codecs.open('twython_log.txt','a','utf-8')
for tweet in friends_timeline:
print \n+tweet[user][screen_name]++ tweet[text]
d=\n+tweet[user][screen_name]++ tweet[text]
a.write(d)
a.close()
This is the code I wrote but I doubt if its a live stream i am
receiving.
I wanted some real time updates from my friends. The above code
fetches data from the 'latest' friends tweet and continues till 60th
tweet. It doesent do anything about the new tweet that might come from
someone.
On Apr 11, 9:34 pm, Atul Kulkarni atulskulka...@gmail.com wrote:
Hi Harshad,
It depends on what you want those updates for? If it is a client then you
will have to stick with the methods you have described but if you are
writing and server end application then you can think of using streaming
api
with follow predicate. This will feed in to your application live updates
from the people you are following. But do not use streaming api if you
thinking of a client, as streaming API could be overwhelming for the client
side application.
Tweepy has code examples, which should help you with the sample code. Just
my 2 cents.
Regards,
Atul.
On Sat, Apr 10, 2010 at 12:34 AM, Harshad Joshi
firewal...@gmail.comwrote:
In the original twitter api, there was a method like
a=twitter.Api('user','password')
b=a.GetFriendsTimeline()
where we could get the friends time line after authentication. It used
to show maximum 20 tweets at a time.
Is there any similar method available in tweepy which will show live
updates? If yes, then what is the maximim number of tweets being
shown?
I would like to see a code snippet of the above method.
--
To unsubscribe, reply using remove me as the subject.
--
Regards,
Atul Kulkarni
Florian
--
Simple dict-like Python API for GConf:
http://www.florian-diesch.de/software/easygconf/
--
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Re: Hi, friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums?
On Apr 22, 10:49 am, John Nagle na...@animats.com wrote: Chris Rebert wrote: 2010/4/22 Jo Chan csj...@gmail.com: Hi,friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums? I only know about max which is poorly a top-1 maximum function, now I want more yet I am lazy enough that don't want to write one by myself. http://docs.python.org/library/heapq.html#heapq.nlargest Cheers, Chris -- http://blog.rebertia.com Is nlargest smart enough to decide when it's cheaper to track the N largest entries on a linear pass through the list than to sort? nlargest() has gotten smarter over time. So, the answer depends on which version you're using. Here's a snippet from http://svn.python.org/view/python/branches/py3k/Lib/heapq.py?revision=70695view=markup def nlargest(n, iterable, key=None): Find the n largest elements in a dataset. Equivalent to: sorted(iterable, key=key, reverse=True)[:n] # Short-cut for n==1 is to use max() when len(iterable)0 if n == 1: it = iter(iterable) head = list(islice(it, 1)) if not head: return [] if key is None: return [max(chain(head, it))] return [max(chain(head, it), key=key)] # When n=size, it's faster to use sort() try: size = len(iterable) except (TypeError, AttributeError): pass else: if n = size: return sorted(iterable, key=key, reverse=True)[:n] # When key is none, use simpler decoration if key is None: it = zip(iterable, count(0,-1)) # decorate result = _nlargest(n, it) return [r[0] for r in result] # undecorate # General case, slowest method in1, in2 = tee(iterable) it = zip(map(key, in1), count(0,-1), in2) # decorate result = _nlargest(n, it) return [r[2] for r in result] # undecorate -- http://mail.python.org/mailman/listinfo/python-list
Re: Hi, friends. I wanna ask if there is a function which is able to take a list as argument and then return its top-k maximums?
On Apr 23, 1:24 am, Bryan bryanjugglercryptograp...@yahoo.com wrote: That is interesting. The above algorithm for nlargest is better, but to use it for nsmallest requires a largest-on-top heap, which the module does not bother to implement. FWIW, the pure python versions differ because they are both implemented in terms of the basic minheap functions, but the underlying C code uses the same algorithm for both (using an underlying maxheap when necessary): http://svn.python.org/view/python/branches/py3k/Modules/_heapqmodule.c?revision=64351view=markup Raymond -- http://mail.python.org/mailman/listinfo/python-list
Re: problem when running .py file
En Fri, 23 Apr 2010 18:43:41 -0300, Tingting HAN hihigh...@gmail.com escribió: I first apologize that I am totally new for python. I have downloaded a code packet “triMC3D” from online, and within it there is a file “configuration.py”.I downloaded and installed python and some related packages, tried very hard, but there is still the following error: the Traceback (most recent call last): File E:\TingTing\triMC3D-1.0.0\python\configuration.py, line 8, in ? from tables import * File C:\Python23\Lib\site-packages\tables\__init__.py, line 31, in ? from tables.utilsExtension import getPyTablesVersion, getHDF5Version ImportError: DLL load failed: The specified procedure could not be found. Looks like some dependecies are incomplete. triMC3D home page at http://trimc3d.et.tudelft.nl/index.php?n=Main.Installation says: triMC3D depends on several libraries in order to be built: libhdf5 and libhdf5_hl libgsl an MPI implementation, like mpich2, in order to compile the parallel version Furthermore, python 2.x and packages pytables, scipy, VTK and numarray/numpy are extensively used for model preparation and post-processing of simulation data. Did you install all of them? triMC3D doesn't appear to be widely used, so better ask the author for further advice. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Calling multiple programs with subprocess
On Sat, Apr 24, 2010 at 1:21 AM, Amit Uttamchandani amit.ut...@gmail.com wrote: On Thu, Apr 22, 2010 at 10:12:47PM -0400, Dave Angel wrote: amit wrote: How does one go about calling multiple programs using subprocess? This is the program flow: C:\ wrenv.exe C:\ make clean .. .. The 'wrenv.exe' is necessary since it sets up the proper environment for building. How do I use subprocess to execute 'wrenv.exe' and then the 'make clean' command. Any help is appreciated. Thanks, Amit One way is to write a batch file (since you're on Windows), and execute that with shell=True. It's not the only way, or the most efficient. But it's most likely to work, without knowing anything more about those two programs. DaveA Thanks Dave. That's actually a good idea and in this case probably the only way that this would work. I can auto-generate the batch file from the python script with the parameters that I need and just execute that with the subprocess. I wish there was a cleaner was as well. Run a shell (cmd.exe, I think) using subprocess and send it the commands you want to run using the communicate() method. -- regards, kushal -- http://mail.python.org/mailman/listinfo/python-list
NotImplemented used in Decimal
I'm reading the source code for decimal.Decimal, and I see that the
arithmetic operations (__add__, __sub__, etc.) start with code like this:
if other is NotImplemented:
return other
I don't understand the purpose of this. I presume that it is *not* for
the use-case of:
d = Decimal('123.456')
result = d + NotImplemented
which not only doesn't make sense to me, but when I try it, it raises
TypeError. So I find myself confused why the arithmetic methods do this.
--
Steven
--
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Re: NotImplemented used in Decimal
On Sat, Apr 24, 2010 at 8:54 AM, Steven D'Aprano
st...@remove-this-cybersource.com.au wrote:
I'm reading the source code for decimal.Decimal, and I see that the
arithmetic operations (__add__, __sub__, etc.) start with code like this:
if other is NotImplemented:
return other
I don't understand the purpose of this. I presume that it is *not* for
the use-case of:
d = Decimal('123.456')
result = d + NotImplemented
which not only doesn't make sense to me, but when I try it, it raises
TypeError. So I find myself confused why the arithmetic methods do this.
There's a _convert_other method which is called before the test that
can return NotImplemented.
--
regards,
kushal
--
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[issue8211] configure: ignore AC_PROG_CC hardcoded CFLAGS
Marc-Andre Lemburg m...@egenix.com added the comment: STINNER Victor victor.stin...@haypocalc.com added the comment: Even if this issue doesn't fix all the configure complete mess, I think that it improves it a little bit. Open new issues if you would like to fix other parts of the configure script. Viktor, you are still missing the point and please stop closing the issue again and again. Please change the configure.in script to only override the CFLAGS in case they were set before entering the AC_PROG_CC part ! I've explained that over and over again and I don't understand why you are being completely ignorant of the implications of your change. The Mac OS X fix is unrelated to this change. -- resolution: fixed - status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8211 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7567] Messed up terminal after calling curses.initscr() twice.
Sreejith Madhavan sreeji...@gmx.com added the comment: Thanks for the patch. I can confirm that the patch works for 64bit builds of python-2.6.5 on Solaris (amd64 and sparc) and RHEL5 amd64. The curses library used was ncurses-5.7 with widechar support. -- nosy: +Sreejith.Madhavan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7567 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8325] improve regrtest command line help
anatoly techtonik techto...@gmail.com added the comment: Thanks for proofreading. I've uploaded a new version here with typo fix, but do not removed 1., 2. numbering. It is a very awesome feature of console UI. When you're in a hurry (and you always in a hurry when you forget something) it is easy to miss the line that starts with Usage: or the line below it that may be thought as continuation of arguments. The digit prefix gives you a clear signal that there is more than one way to run this. If you need an authority, take a look at the tool you are using to commit the patch. =) -- Added file: http://bugs.python.org/file17049/8325.improve-regrtest-help-v2.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8325 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8211] configure: ignore AC_PROG_CC hardcoded CFLAGS
Marc-Andre Lemburg m...@egenix.com added the comment: Marc-Andre Lemburg wrote: Marc-Andre Lemburg m...@egenix.com added the comment: Please change the configure.in script to only override the CFLAGS in case they were set before entering the AC_PROG_CC part ! Sorry, this should have read: ... if CFLAGS *were* set before entering AC_PROG_CC ... I've explained that over and over again and I don't understand why you are being completely ignorant of the implications of your change. One of the main purposes of AC_PROG_CC is to setup CFLAGS in case they are not and your change defeats this purpose. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8211 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8325] improve regrtest command line help
Changes by Ezio Melotti ezio.melo...@gmail.com: -- nosy: +ezio.melotti ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8325 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8503] smtpd module does not allow
New submission from mike s sucha...@kovagroup.ca:
The SMTPServer supplied by the smtpd library allows clients to send mail to any
domain. This makes the server attractive to spammers, thinking they have found
an open relay.
The patch below adds an accept_domain method to SMTPServer (documented below)
which can be overridden by the user to compare the incoming domain against a
list, etc, and return True or False (True=accept address, False=reject).
My apologies if this is the wrong place to submit this; I have not submitted a
patch like this before and am just hoping to help! :)
Mike
--- smtpd.py.bak2010-04-23 00:22:39.0 -0700
+++ smtpd.py2010-04-23 00:51:22.0 -0700
@@ -241,6 +241,10 @@
if not address:
self.push('501 Syntax: RCPT TO: address')
return
+ address_domain = address.split('@')[1]
+ if self._SMTPChannel__server.accept_domain(address_domain) is False:
+ self.push('554 Relay access denied')
+ return
self.__rcpttos.append(address)
print DEBUGSTREAM, 'recips:', self.__rcpttos
self.push('250 Ok')
@@ -289,6 +293,15 @@
print DEBUGSTREAM, 'Incoming connection from %s' % repr(addr)
channel = SMTPChannel(self, conn, addr)
+def accept_domain(self,domain):
+ domain is a string like domain.com that specifes the domain of
+ an email address supplied by client's RCPT TO command.
+
+ Override this method to determine whether SMTPServer should
+ accept mail for a given domain. This is handy for preventing
+ spammers from thinking you are running an open relay.
+ return True
+
# API for doing something useful with the message
def process_message(self, peer, mailfrom, rcpttos, data):
Override this abstract method to handle messages from the client.
--
components: Library (Lib)
messages: 103993
nosy: mike.s
severity: normal
status: open
title: smtpd module does not allow
versions: Python 2.5, Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3
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[issue8503] smtpd module does not allow domain filtering
Changes by mike s sucha...@kovagroup.ca: -- title: smtpd module does not allow - smtpd module does not allow domain filtering ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8503 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8503] smtpd SMTPServer does not allow domain filtering
Changes by mike s sucha...@kovagroup.ca: -- title: smtpd module does not allow domain filtering - smtpd SMTPServer does not allow domain filtering ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8503 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8451] syslog.syslog('msg') logs message with ident python.
Sean Reifschneider j...@tummy.com added the comment: Committed as 80396. Included a change to let openlog(3) pick the ident instead of using the static string python. -- resolution: - accepted status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8451 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8451] syslog.syslog('msg') logs message with ident python.
Sean Reifschneider j...@tummy.com added the comment: Ported to python3 and committed as 80401. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8451 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7384] curses crash on FreeBSD
Stefan Krah stefan-use...@bytereef.org added the comment: Mark, thanks for reviewing the patch. In the new patch, I added a skip for OS X. Buildbot testing looks good. In particular, one FreeBSD bot passes test_curses now (the other one is hanging in multiprocessing). For most bots nothing changes. The solaris bot has the same unrelated failures as before. Ubuntu sparc previously did the same weird linking (readline already linked with ncurses, but using -lncursesw) and now uses ncurses throughout. Tests pass. Debian sparc did the same, tests give the same failures as before (getmouse returned ERR, almost certainly unrelated.) Roumen, I do not see a line in configure.in that tests for the libraries that readline is linked against. -- Added file: http://bugs.python.org/file17050/issue7384-4-py3k.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7384 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7384] curses crash on FreeBSD
Jeroen Ruigrok van der Werven asmo...@in-nomine.org added the comment: I did some digging on my side, the fact you see ncurses referenced from readline is due to the build linking readline to libtermcap: cc -fstack-protector -shared -Wl,-x -o libreadline.so.8 -Wl,-soname,libreadline.so.8 `lorder readline.So vi_mode.So funmap.So keymaps.So parens.So search.So rltty.So complete.So bind.So isearch.So display.So signals.So util.So kill.So undo.So macro.So input.So callback.So terminal.So text.So nls.So misc.So compat.So xmalloc.So history.So histexpand.So histfile.So histsearch.So shell.So mbutil.So tilde.So | tsort -q` -ltermcap And libtermcap is: % ll /usr/lib/libtermcap.so* 0 lrwxr-xr-x 1 root wheel - 13B 18 apr 08:29 /usr/lib/libtermcap.so@ - libncurses.so That configuration option you referenced, Stefan, is that --with-termlib (generate separate terminfo library)? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7384 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8504] bsddb databases in python 2.6 are not compatible with python 2.5 and are slow in python 2.6
New submission from Tim Lyons guy.lin...@gmail.com: A database created under python 2.5 cannot be opened under python 2.6. It gives the error message DB_RUNRECOVERY: Fatal error, run database recovery -- process-private: unable to find environment , and a database created under python 2.6 cannot be opened under python 2.5 (see http://trac.macports.org/ticket/24310). (This in in Mac OS X: In Windows XP SP3, Python 2.6 can read a Python 2.5 bsddb data base. but not the other way around. If you try, you will end up with a corrupt data base.) python 2.6 bsddb is very much slower than python 2.5. Specifically, in Gramps, import of a 500 person xml file takes 12 sec with python25 and 9 mins 30 secs with python26. The slowness has been observed in Mac OS X (See http://trac.macports.org/ticket/23768) and in Windows (see http://www.gramps-project.org/bugs/view.php?id=3750). I am not sure, but I think that both systems are using the same underlying database module db46, and that the difference may be in the different interface modules: _bsddb.so (on Mac OS X) -- components: Library (Lib) messages: 103998 nosy: guy.linton severity: normal status: open title: bsddb databases in python 2.6 are not compatible with python 2.5 and are slow in python 2.6 type: crash versions: Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8504 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8504] bsddb databases in python 2.6 are not compatible with python 2.5 and are slow in python 2.6
Martin v. Löwis mar...@v.loewis.de added the comment: Jesus, any idea? -- assignee: - jcea nosy: +jcea, loewis ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8504 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7384] curses crash on FreeBSD
Stefan Krah stefan-use...@bytereef.org added the comment: Yes, readline uses only the termcap part of ncurses. I think that --with-termlib is the correct option, see: http://www.mail-archive.com/util-linux...@vger.kernel.org/msg00273.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7384 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8325] improve regrtest command line help
Éric Araujo mer...@netwok.org added the comment: Hello I don’t know what “the tool I am using to commit the patch” is (I don’t commit patches), but every program I tested does not use numbers with usage/synopsis lines. Having the name of the program at the start of each line prevents me from thinking it’s a continuation (and my pager, most, colorizes it). That said, I’m not sure it’s useful to include both usage lines. I’d suggest advertising only the ”-m” way. Some of the phrasing of the patch should be improved; if no native speaker does it this week-end, I’ll propose something. Regards -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8325 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7384] curses crash on FreeBSD
Stefan Krah stefan-use...@bytereef.org added the comment: Actually this means that we should also look for -ltinfo in the ldd check (A Redhat buildbot would be nice). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7384 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8503] smtpd SMTPServer does not allow domain filtering
Eric Smith e...@trueblade.com added the comment: This is the right place, thanks for the patch! Since this is a feature request it can only be added to 3.2 (and 2.8, if such a thing ever exists). -- nosy: +eric.smith priority: - normal stage: - unit test needed type: - feature request versions: -Python 2.5, Python 2.6, Python 2.7, Python 3.1, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8503 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8468] bz2: support surrogates in filename, and bytes/bytearray filename
STINNER Victor victor.stin...@haypocalc.com added the comment: Commited: r80402 (py3k), r80403 (3.1). -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8468 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8477] _ssl: support surrogates in filenames, and bytes/bytearray filenames
STINNER Victor victor.stin...@haypocalc.com added the comment: key_file and cert_file are mandatory (see newPySSLObject()) and bytearray are now more accepted by PyUnicode_FSConverter() (see #8485). New version of the patch is simpler and shorter. Support bytearray is a little bit to much complex for me (because of the GIL and bytearray lock), I prefer to leave 3.1 unchanged (I will not backport this patch). -- Added file: http://bugs.python.org/file17051/ssl_surrogates-2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8477 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8242] Improve support of PEP 383 (surrogates) in Python3: meta-issue
Changes by STINNER Victor victor.stin...@haypocalc.com: -- dependencies: +Don't accept bytearray as filenames, or simplify the API ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8242 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8477] _ssl: support surrogates in filenames, and bytes/bytearray filenames
Changes by STINNER Victor victor.stin...@haypocalc.com: Removed file: http://bugs.python.org/file17017/ssl_surrogates.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8477 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8124] mywrite() ignores PyFile_WriteString() errors
STINNER Victor victor.stin...@haypocalc.com added the comment: Commited: r80404 (py3k), r80405 (3.1). -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8124 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8504] bsddb databases in python 2.6 are not compatible with python 2.5 and are slow in python 2.6
Jesús Cea Avión j...@jcea.es added the comment: The database compatibility is dictated by the underlying Berkeley DB library used. Reporter, please do this: (asuming you are using bsddb lib in the standard lib, not external project pybsddb) 1. Open a python2.5 shell. 2. import bsddb 3. print bsddb.__version__, bsddb.db.version() 4. Post the numbers. 5. Repeat under python2.6. In my machine, I get: python2.5: 4.4.5.3 (4, 5, 20) python2.6: 4.7.3 (4, 7, 25) So under python2.5 I would be using Berkeley DB 4.5, and under python2.6 I am using Berkeley DB 4.7. Berkeley DB has a defined procedure to upgrade databases. This is specially important if you are using a transactional datastore. BEWARE: There is *NO* downgrade path. http://www.oracle.com/technology/documentation/berkeley-db/db/programmer_reference/am_upgrade.html Most of the time, the database format doesn't change from version to version, but the environment do (specially the log format). Each Berkeley DB database release documentation includes a very detailed upgrading section. For instance: http://www.oracle.com/technology/documentation/berkeley-db/db/installation/upgrade_11gr2_toc.html Anyway the details are the following: 1. A database created with a X Berkeley DB can not be used in a Y version, if YX. 2. A database created with a X Berkeley DB can be used in a Y version, if YX, if you upgrade the environment/databases first to the new version. The documented upgrade procedure is: http://www.oracle.com/technology/documentation/berkeley-db/db/programmer_reference/upgrade_process.html If you try to use an old format with a new library without updating, you should get a CLEAR error message: Python 2.5.2 (r252:60911, Mar 14 2008, 19:21:46) [GCC 4.2.1] on sunos5 Type help, copyright, credits or license for more information. import bsddb dbenv=bsddb.db.DBEnv() dbenv.open(., bsddb.db.DB_INIT_TXN | bsddb.db.DB_INIT_MPOOL | bsddb.db.DB_INIT_LOG | bsddb.db.DB_CREATE) db=bsddb.db.DB(dbenv) db.open(file.db,flags=bsddb.db.DB_CREATE, dbtype=bsddb.db.DB_HASH) db.close() dbenv.close() Python 2.6.5 (r265:79063, Mar 22 2010, 12:17:26) [GCC 4.4.3] on sunos5 Type help, copyright, credits or license for more information. import bsddb dbenv=bsddb.db.DBEnv() dbenv.open(., bsddb.db.DB_INIT_TXN | bsddb.db.DB_INIT_MPOOL | bsddb.db.DB_INIT_LOG | bsddb.db.DB_CREATE) Traceback (most recent call last): File stdin, line 1, in module bsddb.db.DBError: (-30971, DB_VERSION_MISMATCH: Database environment version mismatch -- Program version 4.7 doesn't match environment version 4.5) The error is pretty obvious. If you go the other way: Python 2.6.5 (r265:79063, Mar 22 2010, 12:17:26) [GCC 4.4.3] on sunos5 Type help, copyright, credits or license for more information. import bsddb dbenv=bsddb.db.DBEnv() dbenv.open(., bsddb.db.DB_INIT_TXN | bsddb.db.DB_INIT_MPOOL | bsddb.db.DB_INIT_LOG | bsddb.db.DB_CREATE) db=bsddb.db.DB(dbenv) db.open(file.db,flags=bsddb.db.DB_CREATE, dbtype=bsddb.db.DB_HASH) db.close() dbenv.close() Python 2.5.2 (r252:60911, Mar 14 2008, 19:21:46) [GCC 4.2.1] on sunos5 Type help, copyright, credits or license for more information. import bsddb dbenv=bsddb.db.DBEnv() dbenv.open(., bsddb.db.DB_INIT_TXN | bsddb.db.DB_INIT_MPOOL | bsddb.db.DB_INIT_LOG | bsddb.db.DB_CREATE) Traceback (most recent call last): File stdin, line 1, in module bsddb.db.DBError: (-30972, DB_VERSION_MISMATCH: Database environment version mismatch -- Program version 4.5 doesn't match environment version 4.7) So, no database corruption, but a clear error message. I guess Gram is reporting database corruption because it can't open the database for some reason, not that the DB is actually corrupted. In your case, anyway, you are saying that you are using the same Berkeley DB both in python2.5 and 2.6, so all this explanation is not actually related. Please CONFIRM that. If you are using actually the same BDB version, the next step is to try to open the DB manually (with a short python script like the posted one). Remember, ALSO, that if you are using a BDB previous to 4.7, you can not simply copy an environment between different endianess machines. For instance, moving from PowerPC to x86. I think that was solved in BDB 4.7, IIRC. Or maybe 4.8. Look at http://forums.oracle.com/forums/thread.jspa?messageID=3725053 About the speed, if you are using the same BerkeleyDB release, the speed should be the same. So the first step would be to actually know if you are using the same BDB version. I guess the importing is doing a new transaction per imported record, flushing them to disk. Flushing is an expensive and slow operation. In a regular HD, that would limit the speed to 30-120 transactions per second, maximum (depending of your filesystem). The dependency of the filesystem could explain the difference between Linux and Windows. The an approach would be to enclose ALL the imported records in a single
[issue8505] 2to3 fix_future.py removes __future__ imports, but should it?
New submission from Barry A. Warsaw ba...@python.org: Lines such as the following are removed by fix_future.py in 2to3 from __future__ import absolute_import, unicode_literals I think this is unnecessary and I have a case where it causes problems. It's unnecessary because this import is essentially a no-op in Python 3, so it does no harm, and serves no actual useful purpose to remove. It causes harm because of a common idiom in doctest setups: def setup(testobj): Test setup. # Make sure future statements in our doctests match the Python code. testobj.globs['absolute_import'] = absolute_import testobj.globs['unicode_literals'] = unicode_literals fix_future.py removes the import so these cause NameErrors. Sure, I can wrap them in try/excepts, but still what's the point of fix_future? -- components: 2to3 (2.x to 3.0 conversion tool) messages: 104008 nosy: barry severity: normal status: open title: 2to3 fix_future.py removes __future__ imports, but should it? versions: Python 3.1, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8505 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8506] SimpleXMLRPCServer Socket not closed after shutdown call
New submission from Erik Schweller othere...@gmail.com: Calling shutdown on a SimpleXMLRPCServer will stop the server but does not close the socket, meaning new connections to the same address will fail. Example: srv = SimpleXMLRPCServer((ip, port), logRequests=False, allow_none=True) srv.serve_forever(poll_interval=2) srv.shutdown() is made available to the registered class instance. The current workaround is to delete the socket (or call close() on the socket) after the server is shutdown, (i.e., del srv.socket) but it seems this should be handled when the server is shutdown. -- components: Library (Lib) messages: 104009 nosy: othererik severity: normal status: open title: SimpleXMLRPCServer Socket not closed after shutdown call type: behavior versions: Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8506 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5639] Support TLS SNI extension in ssl module
Changes by Jesús Cea Avión j...@jcea.es: -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5639 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8504] bsddb databases in python 2.6 are not compatible with python 2.5 and are slow in python 2.6
Peter Landgren peter.tal...@telia.com added the comment: I could add what I have found using bsddb in Python 2.5 and 2.6 under Windows XP SP3. In my installation: Python 2.5.4 bsddb 4.4.5.3 Python 2.6.4 bsddb 4.7.3 What I did: In Gramps imported an XML backup file to a empty bsddb database. It took about 1 hour with 2.6.4 and 2 minutes with 2.5.4! I have also instelled bsddb3: Python 2.6.4 bsddb3 4.8.4 and with the same import I'm back to 2 minutes. I have pstat logs which I could provide. -- nosy: +PeterL ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8504 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8477] _ssl: support surrogates in filenames, and bytes/bytearray filenames
Antoine Pitrou pit...@free.fr added the comment: key_file and cert_file are mandatory No, they are not. Not for a client connection, at least. Also, please add at least a simple test. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8477 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8507] abc.abstractproperty does not copy docstring
New submission from Robert Escriva bugs.pyt...@mail.robescriva.com: Attached file shows interpreter session where the bug manifests. It was my expectation that abc.abstractproperty would copy the docstring just like property. Instead, the docstring is the one for abc.abstractproperty itself. -- components: Library (Lib) files: python.abc.abstractproperty.bug messages: 104012 nosy: rescrv severity: normal status: open title: abc.abstractproperty does not copy docstring type: behavior versions: Python 2.6 Added file: http://bugs.python.org/file17052/python.abc.abstractproperty.bug ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8507 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8507] abc.abstractproperty does not copy docstring
Changes by Antoine Pitrou pit...@free.fr: -- priority: - normal versions: +Python 2.7, Python 3.1, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8507 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1563] asyncore and asynchat incompatible with Py3k str and bytes
Changes by R. David Murray rdmur...@bitdance.com: Removed file: http://bugs.python.org/file11018/unnamed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1563 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1563] asyncore and asynchat incompatible with Py3k str and bytes
R. David Murray rdmur...@bitdance.com added the comment: Since no doc only patch has been proposed and there is some disagreement as to whether it is needed anyway, I'm closing this per msg88559. -- resolution: - out of date stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1563 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7806] httplib.HTTPConnection.getresponse closes socket which destroys the response
R. David Murray rdmur...@bitdance.com added the comment: Hearing no further argument to the contrary, I'm closing this as invalid. -- resolution: - invalid stage: unit test needed - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7806 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8508] 2to3 fixer for gettext's .ugettext
New submission from Barry A. Warsaw ba...@python.org: gettext module in Python 3 does not have a .ugettext method because everything's already unicodes. Here's a fixer for that. -- components: 2to3 (2.x to 3.0 conversion tool) files: fix_ugettext.py messages: 104015 nosy: barry severity: normal status: open title: 2to3 fixer for gettext's .ugettext versions: Python 2.7, Python 3.1, Python 3.2 Added file: http://bugs.python.org/file17053/fix_ugettext.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8508 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
