gh? It goes to some detail describing, e.g., what a.x = 1 means. The
next section explains what a.x += 1 means in terms of the former case.
I did find discussion (end of §6.2 of the language reference) of the
case where the target is an attibute reference, with this example:
class A:
x = 3# class variable
a = A()
a.x += 1 # writes a.x as 4 leaving A.x as 3
Do you want to discuss this example?
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.
Do you mean this option?
http://docs.python.org/distutils/builtdist.html#the-postinstallation-script
Probably the distutils SIG is a better place to ask:
http://www.python.org/community/sigs/current/distutils-sig/
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., lib or lib64) to resolve this issue:
https://www.cca-forum.org/bugs/babel/issue670
The distutils SIG is probably a better place to ask:
http://www.python.org/community/sigs/current/distutils-sig/
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En Wed, 04 Nov 2009 04:50:42 -0300, Alf P. Steinbach
escribió:
* Gabriel Genellina:
I don't understand either. R1 and R2 have *different* semantics.
Assume that they have the very exact same semantics -- like two TV
sets that look the same and work the same except when you ope
nted as a simple attribute, a computed property,
or an esoteric class attribute following the descriptor protocol.
If all a property does is to store and retrieve its value as an instance
attribute, yes, it just adds overhead.
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En Wed, 04 Nov 2009 02:45:23 -0300, iu2 escribió:
On Nov 4, 3:10 am, "Gabriel Genellina" wrote:
txt = """
def foo(x):
print 'x=', x
def bar(x):
return x + x
"""
py> namespace = {}
py> exec txt in namespace
py> namespa
...
class CC(object):
class AA(object):
def __init__(self, ...):
self.bb = BB()
self.cc = CC()
Then, you can write:
aa = AA()
print aa.bb.bb1
aa.bb.bb2 = '10'
print aa.bb.bb2
[1] http://dirtsimple.org/2004/12/python-is-not-java.html
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with createFoo(parameters).
For new-style classes, you may override the __new__ method instead.
Perhaps I didn't understand your problem correctly because this is
unrelated to unit testing...
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stand your scenario, but since you say you have
several threads, a common way to communicate between them is to use a
Queue object. Let the receiver thread put() lines into the queue, and the
processing thread get() them and do some work.
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quot;""My second plugin. I don't know what
is this for, but it works."""
--- end one.py ---
Plugin is the base class; all plugins must inherit from it. PluginMgr
scans the plugin directory, executes all modules it finds there (be
careful...), and looks for Plug
.XML with the bytes before decoding, or reencode
the received xml text in UTF-8 (since this is the declared encoding).
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the module is searched
along sys.path).
The only way to import a local file "re.py" is using "from .re import
something"; the leading dot means it's a relative import ("relative" means
that the module is searched in a single directory: the current package
d
bal variables (none in this example). The global names
that the code creates become entries in the dictionary. (foo and bar;
__builtins__ is an implementation detail of CPython). You may supply
separate globals and locals dictionaries.
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27;s new?" document for Python 3.0 - but right now, they will
just confuse you.
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QOTW: "I consider "import *" the first error to be fixed ..." - Robert
Kern, author of PyFlakes, a potential replacement for Pylint and Pychecker,
on his personal style
http://groups.google.com/group/comp.lang.python/msg/5bf77b21b3b0caf2
Python 2.6.4 is out; it fixes some small b
nstance as first argument (got PluginMount
instance instead)
Python uses "late binding", even more than Java. A reference like
obj.foo(...) searches for "foo" along obj's attributes at runtime.
Please post some code showing your issue, and don't forget to tell us what
is y
rt, although bzr seems to be the most
robust, specially in non trivial cases.
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En Mon, 02 Nov 2009 22:05:42 -0300, Jess Austin
escribió:
On Nov 1, 1:13 am, "Gabriel Genellina" wrote:
Looks like in 3.1 this can be done with bytes+str and viceversa, even
if bytes and str don't have a common ancestor (other than object;
basestring doesn't exi
zipfile.html#zipfile.ZipFile.open
Hope my contents do make sense.
Yes, it was clear to me.
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En Sun, 01 Nov 2009 23:13:10 -0300, Dave Angel escribió:
Gabriel Genellina wrote:
En Sun, 01 Nov 2009 13:34:44 -0300, KillSwitch
escribió:
On Nov 1, 5:34 am, Dave Angel wrote:
KillSwitch wrote:
> I have a C++ program, with a GUI, into which I have embedded
python. I
> hav
ollow PEP8 conventions, module names are all in lowercase, and
class names use TitleCase. This helps avoid confusion.
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En Sun, 01 Nov 2009 19:51:04 -0300, Steven D'Aprano
escribió:
On Sun, 01 Nov 2009 17:34:19 -0300, Gabriel Genellina wrote:
En Sun, 01 Nov 2009 02:54:15 -0300, Steven D'Aprano escribió:
Shadowing a standard library module
is no different.
But that's what namespaces
En Sun, 01 Nov 2009 19:01:42 -0300, MRAB
escribió:
Gabriel Genellina wrote:
One way to avoid name clashes would be to put the entire standard
library under a package; a program that wants the standard re
module would write "import std.re" instead of "import re", or
some
builtin__
py> __builtin__.raw_input = my_raw_input
py>
py> raw_input("What's your name?")
'Gabriel'
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En Sun, 01 Nov 2009 02:54:15 -0300, Steven D'Aprano
escribió:
On Sun, 01 Nov 2009 01:38:16 -0300, Gabriel Genellina wrote:
Incorrect. Simplicity of implementation and API is a virtue, in and of
itself. The existing module machinery is quite simple to understand,
use and maintain.
En Fri, 30 Oct 2009 17:55:27 -0300, Jess Austin
escribió:
On Oct 29, 10:41 pm, "Gabriel Genellina"
wrote:
We know the last test fails because the == logic fails to recognize
mySet (on the right side) as a "more specialized" object than frozenset
(on the left si
lse:
script_path = ''
if script_path in sys.path:
sys.path.remove(script_path)
sys.path.append(script_path)
(I'd want to put such code in sitecustomize.py, but sys.argv doesnt't
exist yet at the time sitecustomize.py is executed)
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se errors are important or not.
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execfile, __file__ doesn't exists.
Remember that execfile just executes the file contents, it does not create
a new module nor interacts with the module management.
"modules launched with execfile" has no meaning.
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e problem I had with my deletion script a while back.
I'd say the problem is ill-defined in that case. You have to decide what
to do with those non-empty directories that are non-empty because you
explicitely skipped some subdirectories...
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En Fri, 30 Oct 2009 13:40:14 -0300, zooko escribió:
On Oct 20, 9:50 pm, "Gabriel Genellina"
wrote:
DON'T do that. Really. Changing the default encoding is a horrible,
horrible hack and causes a lot of problems.
I'm not convinced. I've read all of the posts and w
re once you realize the name '__main__' isn't
special.
Replace __main__ with foo, or config, or whatever, and you get the same
results. Ok, there is a catch: a file with that name must exist, at least
an empty one...
You're just importing the same module from two pla
require modifying tp_richcompare of
set/frozenset objects, so it is aware of subclasses on the right side.
Currently, frozenset() == mySet() effectively ignores the fact that mySet
is a subclass of set.
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En Thu, 29 Oct 2009 13:18:30 -0300, Anthra Norell
escribió:
Gabriel Genellina wrote:
En Wed, 28 Oct 2009 08:05:22 -0300, Anthra Norell
escribió:
Gabriel Genellina wrote:
En Tue, 27 Oct 2009 07:53:36 -0300, Anthra Norell
escribió:
I am trying to upload a bunch of web pages to a hosting
es. tkinter is a package, not
a module.
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nto python" book). The biggest thing
not included in the python.org distribution is the pywin32 package and
related stuff (like the PythonWin editor).
Maybe in the past the gap between both distributions were larger, but now,
the official Python build is perfecty suitable for Windows users
;s not the 3.1.1 installer that forgot to clean up, but files from a
previous 2.x installation.
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people wanting to install this).
The best place to report bugs is http://bugs.python.org/
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En Wed, 28 Oct 2009 08:05:22 -0300, Anthra Norell
escribió:
Gabriel Genellina wrote:
En Tue, 27 Oct 2009 07:53:36 -0300, Anthra Norell
escribió:
I am trying to upload a bunch of web pages to a hosting service.[...]
I wrote a loop that iterates through the file names and calls either
of
and Character Sets (No Excuses!)", by
Joel Spolsky.
http://www.joelonsoftware.com/articles/Unicode.html
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alizing in xml instead of
pickling.
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En Tue, 27 Oct 2009 23:04:47 -0300, Steven D'Aprano
escribió:
On Tue, 27 Oct 2009 21:48:36 -0300, Gabriel Genellina wrote:
En Tue, 27 Oct 2009 10:55:09 -0300, TerryP
escribió:
On Oct 26, 10:00 am, Anthra Norell wrote:
How can one copy files on the OS level?
from ctypes import w
},
"Enter Name ",
{"tagtype":"input","type":"text","size":"40","name":"firstname"}
{"tagtype":"/form"}]
FYI: I have looked at ClientForm. It appears that ClientForm enables the
reading of a
En Tue, 27 Oct 2009 06:36:18 -0300, Brandon Keown
escribió:
On Oct 27, 2:47 am, "Gabriel Genellina"
wrote:
You didn't test for the fopen result; are you sure "test.py" exists in
the current directory at the time you run it?
Ok, so I assumed that the file, i
A
CopyFile("d:\\temp\\old.txt", "d:\\temp\\new.txt", True)
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;t infer any problem. Certainly
uploading
files with ftplib worked fine last time I tried. Try to remove all
unnecesary lines from your script, making it as small as possible but
still showing your problem, and post it here.
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y problem. Certainly uploading
files with ftplib worked fine last time I tried. Try to remove all
unnecesary lines from your script, making it as small as possible but
still showing your problem, and post it here.
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ubdirectory (at least os.py; it is used by the
initialization code to determine the standard library location). Or
nothing.
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from STDIN and writes to STDOUT. Some versions of sed
provide the -i option to
edit files in place (makes backup if extension supplied)
You could program a similar behaviour in Python using the re module.
There is the fileinput module:
http://docs.python.org/library/fileinput.html
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nt of occurences, but their positions too).
I've seen a couple implementations for Python; if they're *actually*
faster is to be determined...
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least put a few printf.
You didn't test for the fopen result; are you sure "test.py" exists in the
current directory at the time you run it?
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En Mon, 26 Oct 2009 14:06:22 -0300, Nadav Chernin
escribió:
Is there a way to know locals of the script without running it?
I don't quite understand the question, could you explain it? A concrete
example would help.
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hon 3672 6187126696 5338484252 5596082 55
4252
python 3672 6187126680 5338484228 698891 2 55
4228
Note the 'VM' and 'Priv' columns (virtual address space and private bytes,
respectively).
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eb service" is a program that exposes some sort of API that can be
accessed thru a web interfase, mostly intended to be used by other
programs, not humans. Web services usually are built on top of HTTP as the
transport layer, so they run behind Apache or other web server. Python is
it).pack()
mainloop()
If you run the code from inside IDLE, you'll have to add this line at the
end:
root.destroy()
as explained here:
http://www.effbot.org/tkinterbook/tkinter-hello-again.htm
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ly meaningful if the server is running Windows, ok?
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QOTW: "It was intended to be understood, not copied." - Dave Angel comments
on a characteristic of didactic examples
http://groups.google.com/group/comp.lang.python/msg/61e2d60d08f1c630
Altering the default character encoding (sys.setdefaultencoding) is never
a good idea:
pleXMLRPCServer
(plus either ThreadingMixIn or ForkingMixIn) is easy enough.
Are sockets actually the best way to do this? If so, how to set it up to
do
what I want? If not, what other approaches could I try?
See the wiki page on distributed systems:
http://wiki.python.org/moin/Distribute
En Sat, 24 Oct 2009 02:48:38 -0300, Brian Quinlan
escribió:
On 24 Oct 2009, at 14:10, Gabriel Genellina wrote:
En Thu, 22 Oct 2009 23:18:32 -0300, Brian Quinlan
escribió:
I don't like a few things in the code:
I'm actually not looking for workarounds. I want to know if
:\Python26\lib\shutil.py", line 27, in copyfileobj
buf = fsrc.read(length)
File "C:\Python26\lib\zipfile.py", line 594, in read
bytes = self.fileobj.read(bytesToRead)
TypeError: integer argument expected, got 'long'
Try adding a length parameter to the c
core.py", line 399, in __getattr__
return getattr(self.socket, attr)
AttributeError: 'SSLSocket' object has no attribute 'out_buffer'
Someone please throw some light on this!
How do you manage asyncore's map? It should contain dispatcher objects --
looks l
exception? Please post the complete exception traceback.
from BeautifulSoup import BeautifulSoup
Import cPAMIE
url = 'http://www.cnn.com'
ie = cPAMIE.PAMIE(url)
bs = BeautifulSoup(ie.pageText())
Also, don't re-type the code. Copy and paste it, directly from the program
that faile
En Fri, 23 Oct 2009 20:56:21 -0300, Ronn Ross
escribió:
I have tried setting the baud rate with no success. Also I'm using port
#2
because I"m using a usb to serial cable.
Note that Serial(2) is known as COM3 in Windows, is it ok?
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I don't know if fixing those things will fix your problem, but at least
the code will look neater...
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En Thu, 22 Oct 2009 22:33:52 -0300, Threader Slash
escribió:
Hi again.. I have done the same test using pyodbc, but to MySQL ODBC
driver.
It works fine for MySQL. The problem still remains to Lotus Notes. Any
other
hints please?
http://www.connectionstrings.com
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st generic 'except' clause should be, normally:
try: ...
except Exception: ...
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ic 'except' clause should be, normally:
try: ...
except Exception: ...
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es, and one in the m list. Once you
remove them (with del, as in your example), the module object itself is
destroyed, yes.
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convert to 3.1. I for one, never had a copy of Python 1.3.
Those relics from the past has been removed in Python 3.x (in both code
and documentation). Also, all notes like 'New in version 1.x' or 'New in
version 2.x' have been removed too.
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En Thu, 22 Oct 2009 17:08:21 -0300, escribió:
On 10/22/2009 03:23 AM, Gabriel Genellina wrote:
En Wed, 21 Oct 2009 15:14:32 -0300, escribió:
On Oct 21, 4:59 am, Bruno Desthuilliers wrote:
beSTEfar a écrit :
(snip)
> When parsing strings, use Regular Expressions.
And now you have _t
then, click on OKAY button.
Is there a python way of automating the above procedure?
I'm very happy using pywinauto for those tasks.
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En Thu, 22 Oct 2009 05:25:16 -0300, Lele Gaifax
escribió:
"Gabriel Genellina" writes:
En Wed, 21 Oct 2009 06:24:55 -0300, Lele Gaifax
escribió:
"Gabriel Genellina" writes:
nosetest should do nothing special. You should configure the environment
so Python *know
otes, any attribute ordering, empty tags, arbitrary whitespace...
If you don't, you are not reading XML (or HTML), only a specific file
format that resembles XML but actually isn't.
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)))
p.wait()
Since the shell is executing in the child process anyway, is the only
difference when using shell=True is that environment variables can be
expanded in the command to be executed?
Note that in this case, "the child process" is rsh on the local system.
Popen has no contr
ertMultiLineEqual use != instead of ==, and some assertion messages
use the wrong terminology)
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riables in outer nested scopes?
Not that I know of - and as someone pointed out recently, vars() should
include those variables instead of simply returning locals().
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ue'})
py> d.items()
[('name', 'value')]
py> d = AttrDict({'items': [1,2,3]})
py> d.items()
Traceback (most recent call last):
File "", line 1, in
TypeError: 'list' object is not callable
(I should have included a test case for
En Wed, 21 Oct 2009 22:24:49 -0300, David Sfiligoi
escribió:
On Wed, 21 Oct 2009 00:45:21 -0300, Gabriel Genellina wrote:
If you want to keep the cursor open, you must commit the (implicit)
current transaction, even if it only contains selects (a rollback would
work too).
Alternatively
En Wed, 21 Oct 2009 06:24:55 -0300, Lele Gaifax
escribió:
"Gabriel Genellina" writes:
DON'T do that. Really. Changing the default encoding is a horrible,
horrible hack and causes a lot of problems.
...
More reasons:
http://tarekziade.wordpress.com/2008/01/08/syssetdefaulte
using *your* default encoding.
- what if another library/package/application wants to set a different
default encoding?
- the default encoding for Python>=3.0 is now 'utf-8' instead of 'ascii'
More reasons:
http://tarekziade.wordpress.com/2008/01/08/syssetdefaultencoding-is-evil/
See also this recent thread in python-dev:
http://comments.gmane.org/gmane.comp.python.devel/106134
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op, I presume.
I'd use a separate process for the console, sending back and forth input
and output to the original process.
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er the transaction isolation level below "repeatable
reads". Note that in other scenarios, ensuring that the same query returns
the same results is a Good Thing.
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bytes ('x') to the struct definition in Python to
match those offsets (and probably use '=' for standard sizes).
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raw_input raises EOFError, and
KeyboardInterrupt is raised a line or two later.
I could not reproduce it with XP so it may be an issue with Windows 7 only.
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27;s correct, would the first version still
work in practice regardless of Python / Tkinter implementation?
I'd use the "modern" interface, that is, keyword arguments (instead of an
explicit dictionary). Although the documentation warns against the "old"
way, the fact is that Tkinter has changed very little in years, and the
cnf parameter is still there in version 3.1
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uot;abc" unicode
text. With Python 3.x, "abc" is unicode (spelled just `str` now) and
b"abc" denotes the `bytes` type (the old str). bytearray is a mutable
variant of the bytes type.
Read the "What's new" document for the 3.0 release:
http://ww
you redirect it from the command line (or your
main program redirects it by code or does something strange with those
handles)
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En Tue, 20 Oct 2009 04:47:02 -0300, arve.knud...@gmail.com
escribió:
On 20 Okt, 09:40, "Gabriel Genellina" wrote:
En Tue, 20 Oct 2009 03:23:49 -0300, arve.knud...@gmail.com
escribió:
> I agree, but like I said, I've been told that this (implicit closing
> of files)
En Tue, 20 Oct 2009 03:23:49 -0300, arve.knud...@gmail.com
escribió:
On Oct 19, 5:56 pm, "Gabriel Genellina"
wrote:
En Mon, 19 Oct 2009 09:45:49 -0200, arve.knud...@gmail.com
escribió:
> I thought that file objects were supposed to be garbage-collected and
> automatic
En Tue, 20 Oct 2009 00:59:12 -0300, Mick Krippendorf
escribió:
Gabriel Genellina schrieb:
__special__ methods are searched in the type, not in the instance
directly. x*y looks for type(x).__mul__ (among other things)
So I thought too, but:
class meta(type):
def __mul__(*args
for type(x).__mul__ (among other things)
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s dirty as yours, one has to duplicate the
original code.
I don't know how often the need arises or how useful would this be to
others, but you could submit a patch to http://bugs.python.org/
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selftest.py module in the source package
for elementtree (available from www.effbot.org) does provide quite a few
examples using doctest.
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avior than throwing an exception.
Just for completeness, and in case anyone would like to try this O(n²)
process, sum(x) may be rewritten as:
x = ["a","b","c",Something()]
print reduce(operator.add, x)
which does exactly the same thing, with the same quadratic b
tmp", "w") as f:
# do something with the file
raise Exception
This way the file is closed when leaving the with statement (either
normally or because of an exception). And, if the file doesn't exist or
access is denied, the open() call doesn't success either. In any case, it
never remains open.
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tever address gethostbyname returns.
If you want load balancing among the 5 addresses above, you'll have to do
it yourself:
host = random.choice(list_of_addresses)
If you don't want to hardcode the addresses, there are a few libraries
that perform DNS queries in PyPI.
--
Ga
:1] == ''.join(myslice(s, -5, -2, 1))
True
But not always:
py> s[10:-1:1]==''.join(myslice(s, 10, -1, 1))
False
py> s[-10:25:1]==''.join(myslice(s, -10, 25, 1))
False
You have to take the sequence length into account before computing the
range, not after.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
to remember to never reuse my_iter again, as my example above
shows. Or keep track of the past items so you can adjust the indices. But
anyway you can't retrieve those past items, unless you maintain them all
in a list and take the memory penalty. Or just use islice when needed -
only s
now it doesn't want to work again. What gives?
I think you'll benefit from using *any* sort of source versioning (cvs,
svn, mercurial...)
This way you can go back in time to the moment when things were working
fine, and see what changed since then.
--
Gabriel Genellina
--
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