I have multiple PMW widgets (EntryFields, ScrolledField etc), how can
I skip over these widgets when using the tab key?
Thank you,
John
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On Mar 26, 11:17 am, [EMAIL PROTECTED] wrote:
> On Mar 26, 10:51 am, "jp" <[EMAIL PROTECTED]> wrote:
>
> > I have multiple PMW widgets (EntryFields, ScrolledField etc), how can
> > I skip over these widgets when using the tab key?
>
> > Thank you,
>
On Mar 26, 11:27 am, [EMAIL PROTECTED] wrote:
> On Mar 26, 11:17 am, [EMAIL PROTECTED] wrote:
>
> > On Mar 26, 10:51 am, "jp" <[EMAIL PROTECTED]> wrote:
>
> > > I have multiple PMW widgets (EntryFields, ScrolledField etc), how can
> > >
On Mar 26, 12:34 pm, [EMAIL PROTECTED] wrote:
> On Mar 26, 11:35 am, "jp" <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Mar 26, 11:27 am, [EMAIL PROTECTED] wrote:> On Mar 26, 11:17 am, [EMAIL
> > PROTECTED] wrote:
>
> > > > On Mar 26, 10
On Mar 26, 5:41 pm, John McMonagle <[EMAIL PROTECTED]> wrote:
> jp wrote:
> >>> On Mar 26, 10:51 am, "jp" <[EMAIL PROTECTED]> wrote:
> >>>> I have multiple PMW widgets (EntryFields, ScrolledField etc), how can
> >>>> I skip over
nose is a discovery-based unittest extension that provides an
alternate test discovery and running process for unittest, one that is
intended to mimic the behavior of py.test as much as is reasonably
possible without resorting to too much magic.
nose 0.9.2 includes quite a few bug fixes and new fe
Hi All,
I am interested to interact with the command prompt, is there a module to
control the input/output stream. Thanks in advance for the pointers
Thanks
Prakash
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Hi All,
Can some one suggest me a module to access SVN repository so that i could
download any given branch.
Thanks
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Hi,
I am using quickfix, would like to start with that
..\quickfix-1.13.3\quickfix\examples\executor\python\executor.py asks for a
configuration file how should it look like.
Thanks
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Hi All ,
Could any one help to get max and min values from a specified column of a
csv file. The* csv file is large* and hence the below code did go bad.
*Alternate
methods would be highly appreciated
**
minimum.py*:
import csv
filename = "testLog_4.csv"
f = open(filename)
def col_min(mincname):
Thanks for the suggestions. Felt the thread could be of help on
consolidating the solution.
*Max Value from a csv column:*
import numpy
data1 = numpy.genfromtxt("data.csv",dtype='float',delimiter =
',',skiprows=1, skip_header=0, skip_footer=0,
usecols=11,usemask=True)
#pri
Hi all,
Want to know how to invoke a bat file on a remote machine.
Thanks
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Hi all,
Could any one provide relevant url/s on the usage of *pyant* scripts and its
setup as well
Thanks
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lock creation. This is
exactly what Twisted's implementation does. You can read that version at
<http://svn.twistedmatrix.com/cvs/trunk/twisted/python/threadable.py?view=markup&rev=13745>.
The code is factored somewhat differently: the functionality is presented as
pre- and post-execution hooks, and there is function decorator. The concept is
the same, however.
Jp
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0,range(10)))
> [0, 100, 1, 100, 2, 100, 3, 100, 4, 100, 5, 100, 6, 100, 7, 100, 8, 100, 9]
> >>>
>
>but I can't think of a use for it ;-)
I have this version:
def interlace(x, i):
"""interlace(x, i) -> i0, x, i1, x, ..., x, iN
;s name is a pointer to where it is
defined: this is useful because it saves a lot of grepping, and unambiguously
tells the reader where the class came from. If you start making it mean
something else, you'll end up confusing people. If you just want a pretty
name, use something /other/ than the class's fully qualified Python name.
Jp
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def mro(self):
... return [float]
...
>>> class bar:
... __metaclass__ = foo
...
Segmentation fault
[EMAIL PROTECTED]:~$ python
Python 2.4.2c1 (#2, Sep 24 2005, 00:48:19)
[GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2
Type "help", "copyright&q
er
>words: probably the whole program could be taken over by other code by
>just one call to that function.
>
If I can call functions in your process space, I've already taken over your
whole program.
Jp
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" so that it is always the
>case that d[1](3) = 3?
There are several ways, but this one involves the least additional typing:
>>> d = {}
>>> for x in 1, 2, 3:
... d[x] = lambda y, x=x: y * x
...
>>> d[1](3)
3
Who needs closures, anyway? :)
Jp
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point, I've had python programs run on linux for more than a year
using both Python 2.1.3 and 2.2.3. These were network apps, with both client
and server functionality, using Twisted.
Jp
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a.html
>
This reminds me of crash-only software:
http://www.stanford.edu/~candea/papers/crashonly/crashonly.html
Which seems to have some merits. I have yet to attempt to develop any large
scale software explicitly using this technique (although I have worked on
several systems that very loosely used this approach; eg, a server which
divided tasks into two processes, with one restarting the other whenever it
noticed it was gone), but as you point out, there's certainly precedent.
Jp
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Pickle.dumps(Numeric.array([datetime.datetime.now() for n in
>>> range(50)])))
Segmentation fault
[EMAIL PROTECTED]:~$
Values smaller than 50 randomly mangle memory, but sometimes don't segfault the
interpreter. You can get exciting objects like instances of cPickle.Pdata or
refcnt back from the loads() call in these cases.
So, the summary is, don't do this.
Jp
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6750617468730a'.decode('hex'))
Jp
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memory in 1.3, but has been fixed since 2.0; and Nevow 0.4.1 made it easy to
write applications that leaked several page objects per request, which has been
fixed since 0.5. If you're using either of these older versions, upgrading may
fix your difficulties.
Hope this helps,
Jp
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the signal occurs.
>
> Note that "longjmp" is dangerous. Great care is necessary.
>
> It is likely that SIGINT occurrences will lead to big
> resource leaks (because your C extension will have no
> way to release resources when it gets quit with "longjmp").
>
Note that swapcontext() is probably preferable to longjmp() in almost all
circumstances. In cases where it isn't, siglongjmp() definitely is.
Jp
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n, we usually don't call them messages.
Instead, "functions" or sometimes "methods".
Jp
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benefit(50)
Or:
[cl.receive_benefit(50) for cl in claimaints if cl.retired())
Or:
map(
ClaimaintType.receive_benefit,
filter(
ClaimaintType.retired,
claimaints),
itertools.repeat(50))
Or:
claimaintGroup.disburse()
Jp
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On 24 Oct 2005 11:28:23 -0700, Tuvas <[EMAIL PROTECTED]> wrote:
>I have been writing a program that is designed to return an 8 byte
>string from C to Python. Occasionally one or more of these bytes will
>be null, but the size of it will always be known. How can I write an
>extention module that wil
-)
>>> print type('', (object,), {'foo': lambda self: 'spam'})().foo()
spam
Jp
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y are available as a third party extension, and unfortunately are
not terribly well documented yet (but luckily they are quite simple).
http://codespeak.net/svn/user/arigo/greenlet/
Jp
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ement between frameworks
simpler for application developers. Of course, it may not, since
it ignores complex things (it certainly comes nowhere close to
addressing the requirements for a Seaside-alike), and any developer
who wants to remain portable will not be able to take advantage of
this technique.
Jp
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le, there is the zlib codec, the rot13 codec, and applications
can define their own codecs with arbitrary behavior. It's entirely
possible to write a codec that decodes _from_ unicode objects _to_
unicode objects and encodes the same way. So unicode objects need both
methods to support this use case.
Jp
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for subx in flatten(subseq):
yield subx
to avoid catching TypeErrors from .next().
Jp
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raise Exception
>
> It returns the IP address with which it connects to the world (not lo),
> might be a pvt LAN address or an internet routed IP. Depend on where the
> host is.
>
> I hate the google trick actually, so any suggestions to something better
> is always welcome.
Jp
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.
>
In Python 2.4,
import operator
L.sort(key=operator.itemgetter(key))
In Python 2.3,
L2 = [(d[key], i, d) for (i, d) in enumerate(L)]
L2.sort()
L = [d for (v, i, d) in L2]
Jp
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ng provider's excuse
for not allowing you to use mod_python is completely bogus. All the
necessary security tools for that situation are provided by the
platform in the form of process and user separation.
Jp
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On 06 Jan 2005 07:32:25 -0800, Paul Rubin <"http://phr.cx"@nospam.invalid>
wrote:
>Jp Calderone <[EMAIL PROTECTED]> writes:
> > A Python sandbox would be useful, but the hosting provider's excuse
> > for not allowing you to use mod_python is complete
tml
Then check out:
http://www.twistedmatrix.com/
Hope this helps,
Jp
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nrelated
processes, no doubt SMP is a big win automatically, but there
will still need to be language innovations to make it easier
to develop software which can benefit from the additional
hardware for the more common case of individual CPU hungry
processes.
Jp
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ult here lies on gmail's end, but it is also
possible that the fault is in your code or the standard library ssl support.
Unless you want to dive into Python's OpenSSL bindings or start examining
network traces of SSL traffic, you probably won't be able to figure out who'
port__ is what you need to replace. Note, of course, that this
only makes it trivially more difficult for malicious code to do destructive
things: it doesn't even prevent the code from importing any module it likes, it
just makes it take a few extra lines of code.
Jp
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p://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
Jp
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t* call accept(). Telnet (or connect somehow) repeatedly, until
your connection is not accepted. On my system (Linux 2.6.10), I can connect
successfully 8 times before the behavior changes.
Jp
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re
more or less the same. If there is more than one file descriptor, though, the
difference should be apparent.
Jp
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self.sendLine("You're taking too long!")
def lineReceived(self, line):
self.resetTimeout()
self.sendLine("Thank you for the line of input!")
from twisted.internet import reactor, stdio
stdio.StandardIO(AnnoyProtocol())
reactor.run()
For fancy line editing su
cumentation on the dict() constructor. Why does it
>support keyword arguments?
>
> dict(foo="bar", baz="blah") ==> {"foo":"bar", "baz"="blah"}
>
>This smacks of creeping featurism. Is this actually useful in real code?
Constantly.
Jp
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diately closes the accepted connection. If you do this (perhaps in
conjunction with calling stopListening() on the port returned by listenXYZ()),
you'll never overrun the 64 object limit.
Jp
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ted the soln again, it works but feels nasty
Including paths in source files is a disaster. As soon as you do it, you need
to account for alternate installation schemes by rewriting portions of your
source files.
Separating path names from module names lets you avoid most of this mess.
Jp
--
h
ermission denied')
>>> s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
>>> s.sendto('asdljk', ('255.255.255.255', 12345))
6
>>>
Yep, looks like it.
Jp
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, 2))
>s.send("Hello, Mum\r\n")
s.sendall("Hello, Mum\r\n")
>
>That should point you in the right direction, anyway.
>
>There is a higher level socket framework called twisted that
>everyone seems to like. It may be worth looking at that too -
>haven't got round to it myself yet.
Twisted is definitely worth checking out.
Jp
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al
>object semantics.
Smalltalk supports this with the "become" message. I have also done an
implementation of this for Python.
Jp
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erator = iter()
while True:
try:
= iterator.next()
except StopIteration:
break
else:
Let's get rid of for, too.
Jp
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ccum,i)
In either case, you want to write:
i = iter(g)
_accum = i.next()
for elem in i:
_accum = stuff(_accum, elem)
You also want to catch the StopIteration from that explicit .next() call, but
that's an unrelated matter.
Jp
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eir own time to try to further the Python language.
Suggesting people can "like it or lump it" is a disservice to everyone.
(Sorry to single you out Peter, I know you frequently contribute great content
to these discussions too, and that there are plenty of other people who respond
in the way you have in this message, but I had to pick /some/ post to reply to)
Jp
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ot;Michael."
>
>(1) Is Python the best language for this? (Plus is it time-efficient?)
>Is there already a search engine that can do this?
>
>(2) How can I search multiple web pages within a single location or
>path?
>
>TIA,
>
>Mike
>
Is a google search
On Sun, 03 Jul 2005 15:40:38 -0500, Rocco Moretti <[EMAIL PROTECTED]> wrote:
>Jp Calderone wrote:
>> On Fri, 01 Jul 2005 15:02:10 -0500, Rocco Moretti
>> <[EMAIL PROTECTED]> wrote:
>>
>>>
>>> I'm not aware of a language that allows it, b
line_after = big_file.readline()
>
Yes, but you need to do it like this:
fileIter = iter(big_file)
for line in fileIter:
line_after = fileIter.next()
Don't mix iterating with any other file methods, since it will confuse the
buffering scheme.
Jp
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mes a global is the simplest
>way to do something... how do I delete a global if not with "del"?
>
Unless you are actually relying on the global name not being defined,
"someGlobal = None" would seem to do just fine.
Relying on the global name not being defined seems like an edge case.
Jp
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er ?
>
Not using the built-in hostname resolution functions. There are a number of
third-party DNS libraries:
http://devel.it.su.se/projects/python-dns/
http://pydns.sourceforge.net/
http://dustman.net/andy/python/adns-python/
http://twistedmatrix.com/projects/names/
Jp
--
http:/
The site you referenced points this out, too:
"""
Reverse DNS entries are set up with PTR records (whereas standard DNS uses A
records), which look like "25.2.0.192.in-addr.arpa. PTR host.example.com"
(whereas standard DNS would look like "host.example.com. A 192.0.2.25").
"""
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to the list sometimes, and raise
ValueErrors from the list.remove() call sometimes.
Java's model isn't really too far from the traditional one. It's a tiny bit
safer, perhaps, but that's all. For something different, take a look at
Erlang's mechanism (this has bee
of how you might do this using Twisted's POP3
client support is attached.
Jp
pop3progress.py
Description: application/python
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On Sat, 16 Jul 2005 19:01:50 -0400, Peter Hansen <[EMAIL PROTECTED]> wrote:
>George Sakkis wrote:
>> "Bengt Richter" <[EMAIL PROTECTED]> wrote:
>>> >>> identity = ''.join([chr(i) for i in xrange(256)])
>>
>> Or equivalently:
>identity = string.maketrans('','')
>
>Wow! That's handy, not to ment
for the grandparent poster.
>
>Since blocking network IO is generally slow, this should help the
>grandparent poster -- I am presuming that "the program updating itself"
>is an IO-bound, rather than processor-bound process.
In the particular case of wxWidgets, it turns o
On Thu, 21 Jul 2005 00:51:45 -0400, Christopher Subich <[EMAIL PROTECTED]>
wrote:
>Jp Calderone wrote:
>
>> In the particular case of wxWidgets, it turns out that the *GUI* blocks
>> for long periods of time, preventing the *network* from getting
>> attention. But
>from the window system. I expect that Qt and Tk work the same way.
But not Gtk? :) I meant what I said: wxWidgets behaves differently in this
regard than Gtk, Qt, and Tk.
Jp
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he UI events -- the toolkit will for
>example use select() to wait for X11 socket I/O, so it can also
>respond to incoming data on another socket, provided along with a
>callback function by the application.
>
>Am I hearing that wxWindows or other popular toolkits don't
On Thu, 21 Jul 2005 02:33:05 -0400, Peter Hansen <[EMAIL PROTECTED]> wrote:
>Jp Calderone wrote:
>> In the particular case of wxWidgets, it turns out that the *GUI* blocks
>> for long periods of time, preventing the *network* from getting
>> attention. But I agree w
(generally the nicest) is to use a
PTY instead of a pipe: when the C library sees stdout is a pipe, it generally
decides to put output into a different buffering mode than when it sees stdout
is a pty. I'm not sure how you use ptys with the subprocess module.
Hope this helps,
Jp
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distutils will rewrite the #! line to fit the configuration of the system the
program is being installed on.
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but I only see good info on how to create my own class
>of exception; I don't see anything on how to override an existing
>exception handler.
>
>Thanks in advance for any help.
See excepthook in the sys module documentation:
http://python.org/doc/lib/module-sys.html
Jp
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cape')
'\\n\\xfe'
>>> '\\n\\xfe'.decode('string-escape')
'\n\xfe'
>>>
Introduced in Python 2.3
Jp
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re typically easy to
terminate at arbitrary times.
Jp
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On 16 Aug 2005 07:10:25 -0700, "John F." <[EMAIL PROTECTED]> wrote:
>I want to write a client app in Python using wxWindows that connects to
>my FreeBSD server via SSH (using my machine account credentials) and
>runs a python or shell script when requested (by clicking a button for
>instance).
>
>C
oblematic too, since it means you will only be able to send one
message for each message received from the server, and vice versa. Most chat
sessions don't play out like this.
>
>print msg
I encourage you to take a look at Twisted. It takes care of all these little
details in a cross-platform manner, allowing you to focus on your unique
application logic, rather than solving the same boring problems that so many
programmers before you have solved.
Hope this helps,
Jp
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org/svn/Nevow/trunk/examples/livepage/livepage.py
It's not a tutorial by itself, but if you poke around some of the other
examples and read http://divmod.org/projects/nevow and some of the documents it
references, you should be able to figure things out.
Jp
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you have it. It's a bit longer, but that's mostly due to the
comments. The runCmd function has a slightly different signature too, since
spawnProcess can control a few more things than Popen3, so it makes sense to
make those features available (these include setting up the chil
ward.tap won't print out all the bytes it receives (I assume this is
just for debugging purposes anyway - if not, a simple modification will cause
it to do this). portforward.tap won't non-deterministically drop traffic,
since Twisted checks the return value of send() and properly re-transmits
anything which has not actually been sent.
Hope this helps,
Jp
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he behavior you wanted:
while not t.done:
time.sleep(1)
Incidentally, the last 3 lines of ctrl_c_handler aren't really necessary.
That said, here's a simpler version of the same program, using Twisted:
import datetime
from twisted.internet import reactor, task
def hello():
print datetime.datetime.now()
task.LoopingCall(hello).start(1, now=False)
reactor.run()
Hope this helps!
Jp
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this isn't the write newsgroup to post on,
>but it's the only one I know of. IF anyone knows a good newsgroup, I'd
>appreciate it.
>
>TIA
The __del__ method is not a reliable cleanup mechanism. It runs when an object
is garbage collected, but garbage collection is unpred
de. Me being dumb or bug?
>
>Any comments welcome :)
>
You need two ARC4 instances. Performing any operation alters the internal
state (as it is a stream cipher), which is why your bytes did not come out
intact.
>>> import Crypto.Cipher.ARC4 as ARC4
>>> o = ARC4.new('hello monkeys')
>>> p = ARC4.new('hello monkeys')
>>> p.decrypt(o.encrypt('super secret message of doom'))
'super secret message of doom'
>>>
Jp
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hreading.Thread, this is a native thread. It is not a
simulation. Something else is going wrong.
Jp
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3.5c1 (#2, Feb 4 2005, 10:10:56)
[GCC 3.3.5 (Debian 1:3.3.5-8)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> long() is long()
False
>>>
Jp
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I give up (and have prepared myself for replies telling
me which search strings to use on Google etc)!
How *should* I create a sequence of N empty lists (buckets)?
I obviously can't use
a = [[]]*N
and I have found various solutions and am currently using
a = map(lambda x: [], range(N))
but ca
t;> Sets are implemented using dictionaries, so the "if w in KEYWORDS"
> > >> part would be O(1) instead of O(n) as with lists...
> > >>
> > >> (I.e. searching a list is a brute-force operation, whereas
> > >> sets are not.
m/search?q=site%3Amail.python.org+file+closing
Jp
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e
> relatively distribution portable.
>
> One can also handle upgrades of the core image of Python and ancillary
> packages as well by leaving a breadcrumb file indicating which packaging
> system is native and the package currently installed. <<- idea needs wor
at you want. Guido wrote it himself, and even he ended up not using
> it)
Funny, I find the exact opposite to be the case... ;) Static methods are
glorified free functions, but class methods participate usefully in inheritence
hierarchies - why would anyone want the former?
Jp
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l over stdio.
Check out
http://twistedmatrix.com/documents/current/examples/stdin.py
and
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
Jp
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ny (_many_) more modules than you ever use at once.
On a reasonable platform, if your program is sleeping, much of the memory it
uses will be swapped out, especially if other processes need it. Are you sure
you have good reason to be concerned over the size of the program?
Jp
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;", line 1, in ?
TypeError: __init__() got multiple values for keyword argument 'self'
__self would be better; a version that doesn't preclude the use of any key
would be best.
Jp
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ard to parse Perl regex'
Twisted's IMAP4 support includes an implementation of this codec. Most of
the API also happily accepts unicode objects and encodes them as necessary, too.
http://www.twistedmatrix.com/
Jp
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b = fileObj.read(1024)
bytes.append(b)
if len(b) < 1024:
break
return ''.join(bytes)
Jp
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On 01 Dec 2004 15:55:18 -0500, David Bolen <[EMAIL PROTECTED]> wrote:
>Jp Calderone <[EMAIL PROTECTED]> writes:
>
> > def nonBlockingReadAll(fileObj):
> > bytes = []
> > while True:
> > b = fileObj.read(1024)
> >
oftware can you ask
for?
And even if there are packages that aren't available, don't you think effort
put into a packaging system would better be put into apt than an entirely new
system that is guaranteed to be less useful than apt for many years?
Jp
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ly those, a descriptor is created which
will produce bound and unbound methods. Instances of other types, such as
or , are ignored, leading to
the critical difference in this case:
>>> X().a
>>> X().b
>
>>>
No bound method for getattr, hence trying to call it with two arguments
fails, as it has no self on which to operate.
Jp
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essage-thread-to-rehash-all-the-same-arguments'ly,
Jp
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omposed in a way that you can infer the endianess
> by reading e.g. a header at the beginning that has well-known fields, then
> it might work. But only you can do that.
>
> For a pure binary file, there is absolutely no way of telling the endianess.
I think you misread the question.
Jp
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in 1.3
and the version that will be in 2.0), which actually supports option
negotiation in a reasonable way.
Jp
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ect(('some_server', some_port))
> client.modules.shutil().rmtree('/tmp/blah')
This seems terribly, terribly insecure; the kind of thing no one should ever
run on any server or desktop anywhere for any reason.
What am I missing?
Jp
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