On Fri, 10 May 2013 05:03:10 +, Steven D'Aprano wrote:
There is no sensible use-case for creating a file OBJECT unless it
initially wraps an open file pointer.
> So far the only counter-examples given aren't counter-examples ...
Well, sure, if you discount operations like "create t
In article <518c7f05$0$29997$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
> there is no way to create a C file descriptor in a closed state. Such
> a thing does not exist. If you have a file descriptor, the file is
> open. Once you close it, the file descriptor is no longer vali
On Fri, 10 May 2013 09:36:43 +1000, Cameron Simpson wrote:
> On 09May2013 11:30, Steven D'Aprano
> wrote:
> | On Thu, 09 May 2013 18:23:31 +1000, Cameron Simpson wrote:
> |
> | > On 09May2013 19:54, Greg Ewing wrote:
> | > | Steven D'Aprano wrote:
> | > | > There is no sensible use-case for cr
On Thu, 09 May 2013 23:09:55 -0400, Roy Smith wrote:
> In article <518c5bbc$0$29997$c3e8da3$54964...@news.astraweb.com>,
> Steven D'Aprano wrote:
>
>> I must admit I am astonished at how controversial the opinion "if your
>> object is useless until you call 'start', you should automatically cal
In article ,
Chris Angelico wrote:
> The first hard disk I ever worked with stored 20MB in the space of a
> 5.25" slot (plus its associated ISA controller card).
Heh. The first hard disk I ever worked with stored 2.4 MB in 6U of rack
space (plus 4 Unibus cards worth of controller). That's no
On Fri, May 10, 2013 at 1:08 PM, Mark Janssen wrote:
> On Thu, May 9, 2013 at 4:58 PM, alex23 wrote:
>> On 10 May, 07:51, Mark Janssen wrote:
>>> You see Ian, while you and the other millions of coding practitioners
>>> have (mal)adapted to a suboptimal coding environment where "hey
>>> there's
On Fri, May 10, 2013 at 1:19 PM, Mark Janssen wrote:
>> I think where things went pear shaped is when you made the statement:
>>
There is no sensible use-case for creating a file OBJECT unless it
initially wraps an open file pointer.
>>
>> That's a pretty absolute point of view. Life is
> I think where things went pear shaped is when you made the statement:
>
>>> There is no sensible use-case for creating a file OBJECT unless it
>>> initially wraps an open file pointer.
>
> That's a pretty absolute point of view. Life is rarely so absolute.
In the old days, it was useful to have
On Thu, May 9, 2013 at 4:58 PM, alex23 wrote:
> On 10 May, 07:51, Mark Janssen wrote:
>> You see Ian, while you and the other millions of coding practitioners
>> have (mal)adapted to a suboptimal coding environment where "hey
>> there's a language for everyone" and terms are thrown around,
>> mi
In article <518c5bbc$0$29997$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
> I must admit I am astonished at how controversial the opinion "if your
> object is useless until you call 'start', you should automatically call
> 'start' when the object is created" has turned out to be
On Fri, May 10, 2013 at 12:30 PM, Steven D'Aprano
wrote:
> I must admit I am astonished at how controversial the opinion "if your
> object is useless until you call 'start', you should automatically call
> 'start' when the object is created" has turned out to be.
I share your astonishment. This i
On Fri, May 10, 2013 at 9:58 AM, alex23 wrote:
> On 10 May, 07:51, Mark Janssen wrote:
>> Languages can reach for an optimal design (within a
>> constant margin of leeway). Language "expressivity" can be measured.
>
> I'm sure that's great. I, however, have a major project going live in
> a few
On Thu, 09 May 2013 19:34:25 +0100, MRAB wrote:
>> There is no sensible use-case for creating a file OBJECT unless it
>> initially wraps an open file pointer.
>>
> You might want to do this:
>
> f = File(path)
> if f.exists():
> ...
>
> This would be an alternative to:
>
> if os.path.exist
Hey !
Now! I have written a python script . I want to call a golang script in
python script.
Who can give me some advices?
thanks!
--
http://mail.python.org/mailman/listinfo/python-list
On 2013-05-10 12:04, Gregory Ewing wrote:
> Roy Smith wrote:
> > http://en.wikipedia.org/wiki/The_band
>
> Nope... googling for "the band" brings that up as the
> very first result.
>
> The Google knows all. You cannot escape The Google...
That does it. I'm naming my band "Google". :-)
-tkc
In article ,
Michael Speer wrote:
> By his reasoning it simply shouldn't exist. Instead you would access the
> information only like this:
>
> with open("myfile.dat") as f:
> data = f.read()
The problem with things like file objects is they model external
real-world entities, which have ext
By his reasoning it simply shouldn't exist. Instead you would access the
information only like this:
with open("myfile.dat") as f:
data = f.read()
Which is my preferred way to work with resources requiring cleanup in
python anyways, as it ensures I have the least chance of messing things up,
an
Roy Smith wrote:
In article <518b133b$0$29997$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
I suspect that the only way to be completely ungoogleable would be to
name yourself something common, not something obscure.
http://en.wikipedia.org/wiki/The_band
Nope... googling for
On 10May2013 10:56, Greg Ewing wrote:
| Cameron Simpson wrote:
| >You open a file with "0" modes, so
| >that it is _immediately_ not writable. Other attempts to make the
| >lock file thus fail because of the lack of write,
|
| I don't think that's quite right. You open it with
| O_CREAT+O_EXCL, w
On 10 May, 07:51, Mark Janssen wrote:
> You see Ian, while you and the other millions of coding practitioners
> have (mal)adapted to a suboptimal coding environment where "hey
> there's a language for everyone" and terms are thrown around,
> misused, this is not how it needs or should be.
Please
On 10 May, 03:33, Ian Kelly wrote:
> You've been posting on this
> topic for going on two months now, and I still have no idea of what
> the point of it all is.
As Charlie Brooker put it: "almost every monologue consists of nothing
but the words PLEASE AUTHENTICATE MY EXISTENCE, repeated over and
Wayne Werner wrote:
You don't ever want a class that has functions that need to be called in
a certain order to *not* crash.
That seems like an overly broad statement. What
do you think the following should do?
f = open("myfile.dat")
f.close()
data = f.read()
--
Greg
--
http://mail.p
On 09May2013 11:30, Steven D'Aprano
wrote:
| On Thu, 09 May 2013 18:23:31 +1000, Cameron Simpson wrote:
|
| > On 09May2013 19:54, Greg Ewing wrote:
| > | Steven D'Aprano wrote:
| > | > There is no sensible use-case for creating a file WITHOUT OPENING
| > | > it. What would be the point?
| > |
|
A Flask extension for Facebook canvas-based applications.
https://github.com/demianbrecht/flask-canvas
Docs available on RTD: https://flask-canvas.readthedocs.org/en/latest/
--
Demian Brecht
http://demianbrecht.github.com
--
http://mail.python.org/mailman/listinfo/python-list
On Fri, May 10, 2013 at 8:30 AM, Ian Kelly wrote:
> On Thu, May 9, 2013 at 3:51 PM, Mark Janssen
> wrote:
>> the community stays fractured.
>
> The open source community seems pretty healthy to me. What is the
> basis of your claim that it is "fractured"?
The carpentry community is fractured.
Cameron Simpson wrote:
You open a file with "0" modes, so
that it is _immediately_ not writable. Other attempts to make the
lock file thus fail because of the lack of write,
I don't think that's quite right. You open it with
O_CREAT+O_EXCL, which atomically fails if the file
already exists. The
On 05/09/2013 05:22 PM, rlelis wrote:
On Thursday, May 9, 2013 7:19:38 PM UTC+1, Dave Angel wrote:
Yes it's a list of string. I don't get the NameError: name 'file_content' is
not defined in my code.
That's because you have the 3 lines below which we hadn't seen yet.
After i appended the h
On Thu, May 9, 2013 at 3:51 PM, Mark Janssen wrote:
> On Thu, May 9, 2013 at 10:33 AM, Ian Kelly wrote:
>> On Wed, May 8, 2013 at 8:35 PM, Mark Janssen
>> wrote:
>>> Okay, to anyone who might be listening, I found the core of the problem.
>>
>> What "problem" are you referring to? You've been
On Fri, May 10, 2013 at 4:59 AM, Roy Smith wrote:
> It's not hard to imagine a
> file class which could be used like:
>
> f = file("/path/to/my/file")
> f.delete()
>
> That would be a totally different model from the current python file
> object. And then there would be plenty of things you might
On Thu, May 9, 2013 at 10:33 AM, Ian Kelly wrote:
> On Wed, May 8, 2013 at 8:35 PM, Mark Janssen
> wrote:
>> Okay, to anyone who might be listening, I found the core of the problem.
>
> What "problem" are you referring to? You've been posting on this
> topic for going on two months now, and I s
>> These models of computation should not use the same language. Their
>> computation models are too radically different.
>
> Their computation models are exactly equivalent.
No they are not. While one can find levels of indirection to
translate between one and the other, that doesn't mean they
On Thursday, May 9, 2013 7:19:38 PM UTC+1, Dave Angel wrote:
Yes it's a list of string. I don't get the NameError: name 'file_content' is
not defined in my code.
After i appended the headers i wanted to cut the data list it little bit more
because there was some data (imagine some other collumn
In article <518be931$0$29997$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
> There is no sensible use-case for creating a file OBJECT unless it
> initially wraps an open file pointer.
OK, I guess that's a fair statement. But mostly because a python file
object only exposes those
On Wed, 08 May 2013 04:19:07 -0700, jamadagni wrote:
> I have the below C program spiro.c (obviously a simplified testcase)
> which I compile to a sharedlib using clang -fPIC -shared -o libspiro.so
> spiro.c, sudo cp to /usr/lib and am trying to call from a Python script
> spiro.py using ctypes. H
On 09/05/2013 19:21, Steven D'Aprano wrote:
On Thu, 09 May 2013 09:07:42 -0400, Roy Smith wrote:
In article <518b32ef$0$11120$c3e8...@news.astraweb.com>,
Steven D'Aprano wrote:
There is no sensible use-case for creating a file without opening it.
Sure there is. Sometimes just creating th
On Thu, 09 May 2013 09:07:42 -0400, Roy Smith wrote:
> In article <518b32ef$0$11120$c3e8...@news.astraweb.com>,
> Steven D'Aprano wrote:
>
>> There is no sensible use-case for creating a file without opening it.
>
> Sure there is. Sometimes just creating the name in the file system is
> all
On 05/09/2013 12:14 PM, rlelis wrote:
On Thursday, May 9, 2013 12:47:47 AM UTC+1, rlelis wrote:
@Dave Angel
this is how i mange to read and store the data in file.
data = []
# readdata
f = open(source_file, 'r')
for line in f:
header = (line.strip()).lower()
# conditions(if/else
On 2013-05-08 21:20, Roy Smith wrote:
FooEntry is a class. How would you describe a list of these in a
docstring?
"A list of FooEntries"
"A list of FooEntrys"
"A list of FooEntry's"
"A list of FooEntry instances"
The first one certainly sounds the best, but it seems wierd to change
the spel
On Wed, May 8, 2013 at 8:35 PM, Mark Janssen wrote:
> Okay, to anyone who might be listening, I found the core of the problem.
What "problem" are you referring to? You've been posting on this
topic for going on two months now, and I still have no idea of what
the point of it all is. I recall so
On 2013-05-09, Jussi Piitulainen wrote:
> Neil Cerutti writes:
>> If there's no chance for confusion between a class named
>> FooEntry and another named FooEntries, then the first attempt
>> seems best. Pluralize a class name by following the usual
>> rules, e.g., "strings" and "ints".
>
> Like "s
Dear Colleague,
Attending several requests, the organizing committee has extended the
submission of abstracts for the International Conference VipIMAGE 2013 - IV
ECCOMAS THEMATIC CONFERENCE ON COMPUTATIONAL VISION AND MEDICAL IMAGE
PROCESSING (www.fe.up.pt/~vipimage) to be held October 14-16, 2
Neil Cerutti writes:
> If there's no chance for confusion between a class named FooEntry
> and another named FooEntries, then the first attempt seems best.
> Pluralize a class name by following the usual rules, e.g.,
> "strings" and "ints".
Like "strings" would be "foo entries". Which might work
On Thursday, May 9, 2013 12:47:47 AM UTC+1, rlelis wrote:
@Dave Angel
this is how i mange to read and store the data in file.
data = []
# readdata
f = open(source_file, 'r')
for line in f:
header = (line.strip()).lower()
# conditions(if/else clauses) on the header content to filter
On Fri, May 10, 2013 at 1:35 AM, chandan kumar wrote:
> Please find the attached script and let me know whats wrong in my script
> and also how can i read data from serial port for the same script.
Don't do this:
except serial.serialutil.SerialException:
print "Exception"
se
On 09/05/2013 16:35, chandan kumar wrote:
Hi all,
I'm new to python and facing issue using serial in python.I'm facing the
below error
*ser.write(port,command)*
*NameError: global name 'ser' is not defined*
*
*
Please find the attached script and let me know whats wrong in my script
and also
On Thu, 09 May 2013 23:35:53 +0800, chandan kumar wrote:
> Hi all,I'm new to python and facing issue using serial in python.I'm
> facing the below error
> ser.write(port,command)NameError: global name 'ser' is not defined
> Please find the attached script and let me know whats wrong in my scri
On Fri, May 10, 2013 at 1:35 AM, chandan kumar wrote:
>
> Hi all,
> I'm new to python and facing issue using serial in python.I'm facing the
> below error
>
> ser.write(port,command)
> NameError: global name 'ser' is not defined
>
> Please find the attached script and let me know whats wrong
Hi all,I'm new to python and facing issue using serial in python.I'm facing the
below error
ser.write(port,command)NameError: global name 'ser' is not defined
Please find the attached script and let me know whats wrong in my script and
also how can i read data from serial port for the same
On 2013-05-08, Denis McMahon wrote:
> On Wed, 08 May 2013 16:20:48 -0400, Roy Smith wrote:
>
>> FooEntry is a class. How would you describe a list of these in a
>> docstring?
>>
>> "A list of FooEntries"
>>
>> "A list of FooEntrys"
>>
>> "A list of FooEntry's"
>>
>> "A list of FooEntry instan
On 05/09/2013 10:33 AM, rlelis wrote:
I apologize once again.
Is my first post here and i'm getting used to the group as long as i get the
feedback of my errors by you guys.
I'm using Python 2.7.3 with no dependencies, i'm simply using the standard
library.
Here is the "big picture" of the scena
I apologize once again.
Is my first post here and i'm getting used to the group as long as i get the
feedback of my errors by you guys.
I'm using Python 2.7.3 with no dependencies, i'm simply using the standard
library.
Here is the "big picture" of the scenario(i have added it in the pastebin lin
On 09/05/13 02:40, Dan Stromberg wrote:
OK, I've got one copy of trees.py with md5
211f80c0fe7fb9cb42feb9645b4b3ffe. You seem to be saying I should have
two though, but I don't know that I do...
[snip]
Yes, 211f80c0fe7fb9cb42feb9645b4b3ffe is the correct checksum for the
latest version. The
On 9 May 2013 14:07, Roy Smith wrote:
> In article <518b32ef$0$11120$c3e8...@news.astraweb.com>,
> Steven D'Aprano wrote:
>
>> There is no sensible use-case for creating a file without opening it.
>
> Sure there is. Sometimes just creating the name in the file system is
> all you want to do. T
On 2013-05-09, rlelis wrote:
> This is what i have for now:
>
> highway_dict = {}
> aging_dict = {}
> queue_row = []
> for content in file_content:
> if 'aging' in content:
> # aging 0 100
> collumns = ''.join(map(str,
> content[:1])).replace('-','_').lower()
>
In article <518b32ef$0$11120$c3e8...@news.astraweb.com>,
Steven D'Aprano wrote:
> There is no sensible use-case for creating a file without opening it.
Sure there is. Sometimes just creating the name in the file system is
all you want to do. That's why, for example, the unix "touch" command
In article <518b133b$0$29997$c3e8da3$54964...@news.astraweb.com>,
Steven D'Aprano wrote:
> I suspect that the only way to be completely ungoogleable would be to
> name yourself something common, not something obscure.
http://en.wikipedia.org/wiki/The_band
--
http://mail.python.org/mailman/lis
On 05/09/2013 05:57 AM, rlelis wrote:
On Thursday, May 9, 2013 12:47:47 AM UTC+1, rlelis wrote:
Hi guys,
I'm working on this long file, where i have to keep reading and
storing different excerpts of text (data) in different variables (list).
Once done that i want to store in dicts the dat
On May 9, 10:39 am, Steven D'Aprano wrote:
> On Wed, 08 May 2013 19:35:58 -0700, Mark Janssen wrote:
> > Long story short: the lambda
> > calculus folks have to split from the Turing machine folks.
> > These models of computation should not use the same language. Their
> > computation models are
On Thu, 09 May 2013 06:08:25 -0500, Wayne Werner wrote:
> Ah, that's it - the problem is that it introduces /Temporal Coupling/ to
> one's code: http://blog.ploeh.dk/2011/05/24/DesignSmellTemporalCoupling/
Good catch!
That's not the blog post I read, but that's the same concept. "Temporal
Coupl
On Thu, 09 May 2013 18:23:31 +1000, Cameron Simpson wrote:
> On 09May2013 19:54, Greg Ewing wrote:
> | Steven D'Aprano wrote:
> | > There is no sensible use-case for creating a file WITHOUT OPENING
> | > it. What would be the point?
> |
> | Early unix systems often used this as a form of locking.
8 Dihedral writes:
> This is just the handy style for a non-critical loop.
> In a critical loop, the number of the total operation counts
> does matter in the execution speed.
Do you use speed often?
--
http://mail.python.org/mailman/listinfo/python-list
Jussi Piitulainen於 2013年5月9日星期四UTC+8下午2時55分20秒寫道：
> RAHUL RAJ writes:
>
>
>
> > Checkout the following code:
>
> >
>
> > sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y]
>
> > output=[]
>
> > output=[x for x in sample2 if x not in output]
>
> >
>
> > the output I get
On Thu, 09 May 2013 01:18:51 -0700, RAHUL RAJ wrote:
> Then what about this code part?
What about it?
> [(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]
>
> and the following code part:
>
> for x in [1,2,3]:
> for y in [3,1,4]:
> if x != y:
> combs.append((x, y))
Apart from
On Wed, 8 May 2013, Steven D'Aprano wrote:
I'm looking for some help in finding a term, it's not Python-specific but
does apply to some Python code.
This is an anti-pattern to avoid. The idea is that creating a resource
ought to be the same as "turning it on", or enabling it, or similar. For
Am 09.05.2013 02:38 schrieb Colin J. Williams:
On 08/05/2013 4:20 PM, Roy Smith wrote:
"A list of FooEntry's" +1
Go back to school. Both of you...
That is NOT the way to build a plural form...
Thomas
--
http://mail.python.org/mailman/listinfo/python-list
On Thursday, May 9, 2013 12:47:47 AM UTC+1, rlelis wrote:
> Hi guys,
>
>
>
> I'm working on this long file, where i have to keep reading and
>
> storing different excerpts of text (data) in different variables (list).
>
>
>
> Once done that i want to store in dicts the data i got from the li
On 9 May 2013 05:19, "dabaichi" wrote:
>
> And hereis the output file:
That's not the output file. That is just an HTML fragment to put on your
page. A full HTML file will need more things, which is the reason why you
don't see color output.
> I want to know why output html file with no color ?
On 09May2013 19:54, Greg Ewing wrote:
| Steven D'Aprano wrote:
| >There is no sensible use-case for creating a file without opening
| >it. What would be the point?
|
| Early unix systems often used this as a form of locking.
Not just early systems: it's a nice lightweight method of making a
lock
Figured out my issue. I did called the check_animated function more than
once and the second call causes the exception unless I seek back to 0
On 6 May 2013 21:57, Sven wrote:
> Hello,
>
> I am trying to check if an image is animated. I can't rely on the
> extension as it may be a gif that's be
I'm getting same output for both code parts, why not for th code parts in
question?
On Thursday, May 9, 2013 1:48:51 PM UTC+5:30, RAHUL RAJ wrote:
> Then what about this code part?
>
>
>
> [(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]
>
>
>
> and the following code part:
>
>
>
> f
Then what about this code part?
[(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]
and the following code part:
for x in [1,2,3]:
for y in [3,1,4]:
if x != y:
combs.append((x, y))
On Thursday, May 9, 2013 12:24:24 PM UTC+5:30, Gary Herron wrote:
> On 05/08/2013 11:36 PM, RAHUL RA
On 5/9/2013 2:59 AM, kreta06 wrote:
Hi All,
I'm looking for one or two medium-advanced python programmers to
practice programming on a Windows 7 platform. In addition, any
interests in writing python code to query Microsoft SQL databases
(2005-2008) is also welcomed.
I've coded in python 2.7 an
Steven D'Aprano wrote:
There is no sensible use-case for creating a file without opening it.
What would be the point?
Early unix systems often used this as a form of locking.
--
Greg
--
http://mail.python.org/mailman/listinfo/python-list
On Thu, May 9, 2013 at 4:36 PM, RAHUL RAJ wrote:
> output=[x for x in sample2 if x not in output]
>
> output=[]
> for x in sample2:
> if x not in output:
> output.append(x)
The first one constructs a list, then points the name 'output' at it.
The second one builds up a list, with 'output'
On 05/08/2013 11:36 PM, RAHUL RAJ wrote:
Checkout the following code:
sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y]
output=[]
output=[x for x in sample2 if x not in output]
This statement is not doing what you expect. It is not building a list
in the variable named outpu
Hi All,
I'm looking for one or two medium-advanced python programmers to
practice programming on a Windows 7 platform. In addition, any
interests in writing python code to query Microsoft SQL databases
(2005-2008) is also welcomed.
I've coded in python 2.7 and currently am trying to make the swit
RAHUL RAJ writes:
> Checkout the following code:
>
> sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y]
> output=[]
> output=[x for x in sample2 if x not in output]
>
> the output I get is
> 3 4 5 6 7 8 9 10 3 5 6 7 8 9 10 11 4 5 7 8 9 10 11 12 5 6 7 9 10 11
> 12 13 6 7 8 9 11
dieter, 09.05.2013 07:54:
> jamadagni writes:
>> ...
> I cannot help you with "ctypes". But, if you might be able to use
> "cython", then calling callbacks is not too difficult
+1 for using Cython. It also has (multi-)source level gdb support, which
greatly helps in debugging crashes like this one
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