pyt...@bdurham.com wrote:
I'm looking for the best practice way for a multi-threaded python web
server application to read/write to a shared file or a SQLite database.
What do I need to do (if anything) to make sure my writes to a regular
file on disk or to a SQLite database are atomic in nature
On 02Jan2010 15:21, cassiope wrote:
| [...] I want
| to save a copy of the email in a particular directory which is
| accessible to the Windows clients via samba.
|
| The strange thing is that even with the right user-id, I cannot seem
| to write to the directory, getting an IOError exception.
On Sat, Jan 2, 2010 at 9:38 PM, n00m wrote:
> What you achieved in the life?
English mastery, for starters...
--
http://mail.python.org/mailman/listinfo/python-list
On Jan 3, 5:30 am, Steve Holden wrote:
> Zhu Sha Zang wrote:
> >> [stuff and nonsense from a third party]
> > WTF?
>
> We do get the occasional bigot dropping in from time to time. Best to
> ignore them 'til they go away.
>
> regards
> Steve
> --
> Steve Holden +1 571 484 6266 +1 800
Zhu Sha Zang wrote:
>> [stuff and nonsense from a third party]
> WTF?
We do get the occasional bigot dropping in from time to time. Best to
ignore them 'til they go away.
regards
Steve
--
Steve Holden +1 571 484 6266 +1 800 494 3119
PyCon is coming! Atlanta, Feb 2010 http://us.pyc
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Em 03-01-2010 01:17, n00m escreveu:
> Congrats!
> Your choice -- to ban building of muslim mosques -- is the only choice
> to save our civililazation.
> This yellow plague (incl. Chinese etc) must be eliminated from our
> Planet,
> They are very cunnin
Congrats!
Your choice -- to ban building of muslim mosques -- is the only choice
to save our civililazation.
This yellow plague (incl. Chinese etc) must be eliminated from our
Planet,
They are very cunning critters, they can play on strings of
compassion,
but its riffraffs. What do you know about R
new in this release:
* updated the repository to GZRBOT code
* a outputcache and poller gadget is now available to support writing
to waves (right now the poller polls every minute)
* RSS plugin looks stable
todo:
* make gozernet work .. this lets GZRBOT bots communicate with each
other by using
cassiope wrote:
> The strange thing is that even with the right user-id, I cannot seem
> to write to the directory, getting an IOError exception. Changing the
> directory to world-writable fixes this. I can confirm the uid and gid
> for the script by having the script print these values just befo
Steven D'Aprano wrote:
On Sat, 02 Jan 2010 09:40:44 -0800, Aahz wrote:
OTOH, if you want to do something different depending on whether the
file exists, you need to use both approaches:
if os.path.exists(fname):
try:
f = open(fname, 'rb')
data = f.read()
f.close(
On 2010-01-02 17:17 , Brian Blais wrote:
On Jan 2, 2010, at 13:21 , Mike Howard wrote:
Hi Dave,
Chicago in January?
How about moving it to Denver - it's a nice town and I live close by.
Mike
David Beazley wrote:
Python Concurrency Workshop, v2.0
I think, in the spirit of the topic, they
On Sat, Jan 2, 2010 at 1:47 PM, Dave McCormick wrote:
WooHoo!!!
I got it!!! Yup, I am sure it can be optimized but it works!!!
Hmmm ... it doesn't work for me ...
RED
for word in redList:
new_Rword(complete, word) def new_Rword(complete, word):
Tbox.tag_remov
On Jan 2, 4:19 pm, Emile van Sebille wrote:
> On 1/1/2010 5:05 PM Steven D'Aprano said...
>
> > In Python terms, imagine if we could write
>
> > foriinrange(10):
>
> > instead of the usual
>
> > for i in range(10):
>
> > Since the colon makes it unambiguous that it is some sort of block
On Sat, Jan 2, 2010 at 1:47 PM, Dave McCormick wrote:
WooHoo!!!
I got it!!! Yup, I am sure it can be optimized but it works!!!
Dave, please ignore a couple of my bogus complaints in the previous
message:
... you call function new_Rword() before you define it
... this version also has
On Sun, 03 Jan 2010 01:10:51 +1100, Lie Ryan wrote:
> On 1/2/2010 9:42 PM, Steven D'Aprano wrote:
>> On Fri, 01 Jan 2010 15:27:57 -0800, myle wrote:
>>
>>> Why we should prefer ``if: ...'' over a ``try: ... except something:
>>> pass'' block?
>>
>> We shouldn't, not in general.
>
> One exception
On Sat, 02 Jan 2010 09:40:44 -0800, Aahz wrote:
> OTOH, if you want to do something different depending on whether the
> file exists, you need to use both approaches:
>
> if os.path.exists(fname):
> try:
> f = open(fname, 'rb')
> data = f.read()
> f.close()
> r
On Jan 2, 2010, at 13:21 , Mike Howard wrote:
Hi Dave,
Chicago in January?
How about moving it to Denver - it's a nice town and I live close by.
Mike
David Beazley wrote:
Python Concurrency Workshop, v2.0
I think, in the spirit of the topic, they should hold it at both
Alain Picard wrote:
> [Aplogies about the wild cross-post follow-up --- I guess the topic
> [really
> is relevant to most programming communities.]
No, it's not relevant. Xah Lee is a self spammer, in that he spams
about himself, tries to get people hyped up about him and thinks he's
impressing
cassiope wrote:
> I have a daemon on a Linux system that supports a number of Windows
> clients. Among the functions is to send e-mails, which is
> sufficiently complicated that I fork() a separate process which gets
> setuid to a lesser user, and calls a python script which does the
> actual form
I'm not Skippy, but I do have my wife's Toshiba Satellite running
Windows 7 Home Premium laying around. I figured that since I am fairly
well set to duplicate all the information you gave in your problem, I
would take a look. The bad news is that Python works great on it, so
your problem ne
I have a daemon on a Linux system that supports a number of Windows
clients. Among the functions is to send e-mails, which is
sufficiently complicated that I fork() a separate process which gets
setuid to a lesser user, and calls a python script which does the
actual formatting and emailing (the d
Hi.
Thank you for the answers.
Oh, sorry. It was one of the changes from .2.x to 3.x. I didn't know.
There are really important and a lot of changes.
Thank you!
At 01 Jan 2010 13:57:03 + Duncan Booth wrote:
> Hidekazu IWAKI wrote:
>
> > Hi;
> > I'd like to import "urllib2" in windows pytho
On 1/2/2010 1:14 AM Xah Lee said...
These books are the bedrock of the industry. It is not because people
are impatient, or that they wish to hurry, but rather, it is the
condition of the IT industry, in the same way modern society drives
people to live certain life styles.
Turing complete. On
Alain Picard writes:
> If you want to change the world, you start by changing yourself.
Like for starters setting a follow-up to header, especially if you spam
4 groups. But Xah is Xah.
--
John Bokma
Read my blog: http://johnbokma.com/
Hire me (Perl/Python): http://castleamber.com/
--
http:/
On 1/1/2010 5:05 PM Steven D'Aprano said...
In Python terms, imagine if we could write
foriinrange(10):
instead of the usual
for i in range(10):
Since the colon makes it unambiguous that it is some sort of block
construct, and it starts with "for", it must be a for loop. Pretty
horr
[Aplogies about the wild cross-post follow-up --- I guess the topic really
is relevant to most programming communities.]
Xah Lee writes:
> To see this in a different context, suppose you need to pass a
> important Math XYZ exam or review in your career or get a certificate,
> but you don't rem
On 1/2/2010 10:04 AM, Peng Yu wrote:
For my own interest, I want understand the run time behavior of python
That depends on the implementation.
and what details causes it much slower.
A language feature that slows all implementation is the dynamic
name/slot binding and resolution. Any imp
On Thu, Dec 31, 2009 at 12:31 AM, Ron Croonenberg wrote:
> is there a way, in python, to create a splash window and when the program
> has completed disappears by sending a msg to it? (I tried creating two gtk
> windows but gtk_main doesn't seem to return unless it gets closed.)
It's really simp
> I'm asking about why the behavior of a StopIteration exception being
> handled from the `expression` of a generator expression to mean "stop
> the loop" is accepted by "the devs" as acceptable.
I may be late to this discussion, but the answer is "most definitely
yes". *Any* exception leads to t
>> Bottom line, I'm going to have to remove this pattern from my code:
>>
>> foo = (foo for foo in foos if foo.bar).next()
I recommend to rewrite this like so:
def first(gen):
try:
return gen.next()
except StopIteration:
raise ValueError, "No first value"
foo = first(foo for foo in
A big Thank You to all for the answer (and the hints).
That sure explains a lot.
Again, Thank you very much.
Cheers,
Vance
--
http://mail.python.org/mailman/listinfo/python-list
VanceE wrote:
> Just curious.
>
> type([]) == type(())
> is False as expected
>
> and
>
> assert type([]) == type(())
> throws an AssertionError as expected.
>
> However the following is not an error
>
> for x in []:
> assert type(x) == type(())
>
> I expected an AssertionError but get n
WooHoo!!!
I got it!!! Yup, I am sure it can be optimized but it works!!!
John,
I have to admit that I spent several hours working on this before I
looked at your example, then I spent another several hours getting this far.
Would never have gotten it with out you help. Thanks!!!
Also reading t
Hi Dave,
Chicago in January?
How about moving it to Denver - it's a nice town and I live close by.
Mike
David Beazley wrote:
Python Concurrency Workshop, v2.0
January 14-15, 2010
Chicago, Illinois
http://www.dabe
In article <034f1009$0$1277$c3e8...@news.astraweb.com>,
Steven D'Aprano wrote:
>
>The try version is also better whenever there could be a race condition.
>For example, when opening a file, you might be tempted to do this:
>
>if os.path.exists(filename):
>f = open(filename, 'r')
>text =
However the following is not an error
for x in []:
assert type(x) == type(())
Trying to iterate over an empty sequence or iterator causes
0 (zero) steps of iteration -- so above assert statement is
never run.
Cheers,
*j
--
Jan Kaliszewski (zuo)
--
http://mail.python.org/mailman/listinfo/
However the following is not an error
for x in []:
assert type(x) == type(())
I expected an AssertionError but get no errors at all.
Any explaination?
number_of_times_through_the_loop = 0
for x in []:
assert type(x) == type(())
number_of_times_through_the_loop += 1
print nu
VanceE wrote:
> for x in []:
> assert type(x) == type(())
>
> I expected an AssertionError but get no errors at all.
> Any explaination?
[] is an empty sequence, so your loop executes exactly 0 times. :)
for x in [None]:
assert ...
w.
--
http://mail.python.org/mailman/listinfo/py
On 2010-01-02, VanceE wrote:
> for x in []:
> assert type(x) == type(())
>
> I expected an AssertionError but get no errors at all.
> Any explaination?
That loop never runs. It immediately raises a StopIteration and the body
is never executed.
cf.
for x in []:
print "In loop body"
You w
Just curious.
type([]) == type(())
is False as expected
and
assert type([]) == type(())
throws an AssertionError as expected.
However the following is not an error
for x in []:
assert type(x) == type(())
I expected an AssertionError but get no errors at all.
Any explaination?
BTW I'm us
On Fri, 01 Jan 2010 17:37:40 -0800, W. eWatson wrote:
> I suspect that if one installs v2.4 and 2.5, or any two versions, that
> one will dominate, or there will be a conflict. I suppose it would not
> be possible to choose which one should be used. Comments?
The only inherent conflict is that
On Sat, Jan 2, 2010 at 10:46 AM, Steve Holden wrote:
>
> See the .sig. Of course I'm a businessman.
>
Nice site! In that case, respectfully I disagree!
beno
--
http://mail.python.org/mailman/listinfo/python-list
Victor Subervi wrote:
[...]
> While the learning you have performed in getting this system to work
> (for some rather questionable value of "work", I can't help feeling, but
> we'll overlook the horrors induced by your lack of programming
> experience) is a testament to your persist
There isn't a tuple is sight there - you are dealing with lists, and you
> are modifying the very list you are iterating over.
>
> Try rewriting the code to create a new list from the old one (i.e.
> iterate over catChains and have your code append to an initially empty
> list called, for example,
> For my own interest, I want understand the run time behavior of python
> and what details causes it much slower. Although people choose python
> for its programming efficiency, but sometimes the runtime still
> matters. This is an important aspect of the language. I'm wondering
> this is not even
On Sat, Jan 2, 2010 at 6:05 AM, Diez B. Roggisch wrote:
> Peng Yu schrieb:
>>
>> On Thu, Dec 31, 2009 at 11:24 PM, Chris Rebert wrote:
>>>
>>> On Thu, Dec 31, 2009 at 8:47 PM, Peng Yu wrote:
I observe that python library primarily use exception for error
handling rather than use e
Hello Skippy,
In response to your message "Windows 7 : any problems installing or running
Python ?" I found posted at
(http://mail.python.org/pipermail/python-list/2009-August/1215524.html),
I've got to say that I can't seem to get any version of Python to work on my
computer. I have a Toshiba
On 1/2/2010 9:42 PM, Steven D'Aprano wrote:
On Fri, 01 Jan 2010 15:27:57 -0800, myle wrote:
Why we should prefer ``if: ...'' over a ``try: ... except something:
pass'' block?
We shouldn't, not in general.
One exception (pun intended) is if the try-block have a side effect that
is difficul
On 2 ene, 14:21, Ulrich Eckhardt wrote:
> vsoler wrote:
> > class stepper:
> > def __getitem__(self, i):
> > return self.data[i]
>
> > X=stepper()
> > X.data="Spam"
> > for item in X:
> > print item,
>
> > ... what I get is S p a m which seems logical to me since the
> > lo
Victor Subervi wrote:
> Hi;
> I have the following code snippet:
>
> print 'Original: ', catChains, ''
> while i < MAXLEVEL:
> flag = 0
> j = 0
> while j < len(parents):
> for chain in catChains:
> if parents[j] == chain[len(chain)-1]:
> chain.append(childre
vsoler wrote:
> class stepper:
> def __getitem__(self, i):
> return self.data[i]
>
> X=stepper()
> X.data="Spam"
> for item in X:
> print item,
>
> ... what I get is S p a m which seems logical to me since the
> loop stops after the 4th character.
I think you're mistaking
On Jan 2, 3:50 pm, vsoler wrote:
> My question is: why does this second script not stop after printing
> number 3? what made the first one stop while the second one will not?
First one will raise IndexError when string is over, second one won't.
--
http://mail.python.org/mailman/listinfo/pytho
Paul Kölle wrote:
> Am 01.01.2010 23:55, schrieb Kent Tenney:
>> Howdy,
> Hi Kent,
>
>> A script running as a regular user sometimes wants
>> to run sudo commands.
>>
>> It gets the password with getpass.
>> pw = getpass.getpass()
>>
>> I've fiddled a bunch with stuff like
>> proc = subprocess.Pop
> I mentioned an "exception stack" above, though I'm not 100% sure if that is
> the proper term. I think that exceptions can be stacked upon each other
> (e.g. an HTTPD throwing a high-level RequestError when it encounters a low-
> level IOError) and that that is also how the backtrace is implem
hello,
I'm learning Python and OOP, and I am confronted with a rather
theoretical problem.
If I run the following script:
class stepper:
def __getitem__(self, i):
return self.data[i]
X=stepper()
X.data="Spam"
for item in X:
print item,
... what I get is S p a m which se
Peng Yu schrieb:
On Thu, Dec 31, 2009 at 11:24 PM, Chris Rebert wrote:
On Thu, Dec 31, 2009 at 8:47 PM, Peng Yu wrote:
I observe that python library primarily use exception for error
handling rather than use error code.
In the article API Design Matters by Michi Henning
Communications of th
On Sat, 02 Jan 2010 10:42:39 +, Duncan Booth wrote:
> Donn wrote:
>
>> On Saturday 02 January 2010 00:02:36 Dan Stromberg wrote:
>>> I put together a page about significant whitespace (and the lack
>>> thereof).
>> The only thing about Python's style that worries me is that it can't be
>> co
Peng Yu wrote:
> Could somebody let me know how the python calls and exceptions are
> dispatched? Is there a reference for it?
I'm not a Python expert, but I have read some parts of the implementation.
Hopefully someone steps up if I misrepresent things here...
In order to understand Python exce
Hi;
I have the following code snippet:
print 'Original: ', catChains, ''
while i < MAXLEVEL:
flag = 0
j = 0
while j < len(parents):
for chain in catChains:
if parents[j] == chain[len(chain)-1]:
chain.append(children[j])
print '1: ', catChains, ''
Donn wrote:
> On Saturday 02 January 2010 00:02:36 Dan Stromberg wrote:
>> I put together a page about significant whitespace (and the lack
>> thereof).
> The only thing about Python's style that worries me is that it can't
> be compressed like javascript can*, and perhaps that will prevent it
>
On Fri, 01 Jan 2010 15:27:57 -0800, myle wrote:
> Why we should prefer ``if: ...'' over a ``try: ... except something:
> pass'' block?
We shouldn't, not in general.
Often, the if test is just as expensive as actually doing it. E.g.:
if x in mylist:
position = mylist.index(x)
else:
do_s
Am 01.01.2010 23:55, schrieb Kent Tenney:
Howdy,
Hi Kent,
A script running as a regular user sometimes wants
to run sudo commands.
It gets the password with getpass.
pw = getpass.getpass()
I've fiddled a bunch with stuff like
proc = subprocess.Popen('sudo touch /etc/foo'.split(), stdin=subpr
On Dec 25 2009, 12:44 am, r...@rpw3.org (Rob Warnock) wrote:
> jos...@corporate-world.lisp.de wrote:
>
> +---
> | p...@informatimago.com (Pascal J. Bourguignon) wrote:
> | > LOL Yeah right! Give gavino ten years of rest to let
> | > his unconscious mind work on it!
> |
> | Norvig's 'Te
On Fri, Jan 1, 2010 at 5:36 PM, Peng Yu wrote:
> >> Otherwise, could some python expert explain to me why exception is
> >> widely used for error handling in python? Is it because the efficiency
> >> is not the primary goal of python?
> >
> > Correct; programmer efficiency is a more important goa
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