On Wed, May 29, 2013 at 3:26 AM, Wolfgang Keller wrote:
> I won't give you an example, but just some very basic criteria:
>
> - It must be very efficient for very small "datagrams"
> - It must provide connections
> - For asynchronous programming it must provide for callbacks
In other words, a TEL
On Wed, May 29, 2013 at 4:25 AM, Matt Graves wrote:
> I receive this error while toying around with Functions...
>
> def pulldata(speclist,speccolumn):
> (speclist).append(column[('speccolumn')])
>
> pulldata(speclist = 'numbers', speccolumn = "0")
>
> I'm getting the error becaus
On Wed, May 29, 2013 at 2:53 AM, Peter Otten <__pete...@web.de> wrote:
> Chris Angelico wrote:
>
>> On Wed, May 29, 2013 at 2:19 AM, Peter Otten <__pete...@web.de> wrote:
>>> Solution: configure your editor to use four spaces for indentation.
>>
>> ITYM eight spaces.
>
> I meant: one hit of the Tab
On Tuesday, May 28, 2013 11:00:42 AM UTC+1, Debbie wrote:
> Hi there,
>
> I am new to Python, and wondering if you could help me with python based
> coding for the IPSA (Power system analysis software). I have a electrical
> distribution network with generators, buses and loads, on which I am
>
Can anyone tell me the proper way in which I can execute dynamic MySQL queries
in Python?
I want to do dynamic queries for both CREATE and INSERT statement.
Here is my attempted code:
sql="create table %s (%%s, %%s, %%s ... )" % (tablename,''.join(fields)+'
'.join(types))
cur.execute(sql)
On 29 May 2013 10:13, "RAHUL RAJ" wrote:
>
> Can anyone tell me the proper way in which I can execute dynamic MySQL
queries in Python?
>
> I want to do dynamic queries for both CREATE and INSERT statement.
>
> Here is my attempted code:
>
>
> sql="create table %s (%%s, %%s, %%s ... )" % (tablename
On May 29, 4:30 am, Dennis Lee Bieber wrote:
> On Tue, 28 May 2013 15:10:03 + (UTC), Grant Edwards
> declaimed the following in
> gmane.comp.python.general:
>
> > On 2013-05-25, Rakshith Nayak wrote:
>
> > > Always wondered how sound is generated from text. Googling couldn't
> > > help. Devs
What makes us o sure it is a pymysql issue and not python's encoding issue?
--
http://mail.python.org/mailman/listinfo/python-list
Hi,
Wolfgang Maier biologie.uni-freiburg.de> writes:
>
> Dear all,
> I was just experimenting for the first time with os.posix_fadvise(), which
> is new in Python3.3 . I'm reading from a really huge file (several GB) and I
> want to use the data only once, so I don't want OS-level page caching.
Hi,
How can you detect if a key is duplicated in a JSON file? Example:
{
"something": [...],
...
"something": [...]
}
I have a growing JSON file that I edit manually and it might happen
that I repeat a key. If this happens, I would like to get notified.
Currently the value of the sec
hi,
I am trying to display my output with different colour on terminal, but it's
coming with that colour code.
Please help me how is it possible?
my code is -
from fabric.colors import green, red, blue
def colorr():
a = red('This is red')
b = green('This is green')
c = blue('This i
Hello all, again. Instead of revising like I'm meant to be, I've been
delving into a bit of Python and I've come up with this code:
class ClassWithProperty:
@property
def property(self):
pass
thingwithproperty = ClassWithProperty()
def loop():
try:
thingwithproperty.property
except:
pass
loop
On 29 May 2013 12:25, "Avnesh Shakya" wrote:
>
> hi,
>I am trying to display my output with different colour on terminal,
but it's
> coming with that colour code.
> Please help me how is it possible?
>
> my code is -
> from fabric.colors import green, red, blue
> def colorr():
> a = red('T
On 05/29/2013 07:48 AM, Joshua Landau wrote:
Hello all, again. Instead of revising like I'm meant to be, I've been
delving into a bit of Python and I've come up with this code:
To start with, please post in text mode. By using html, you've
completely messed up any indentation you presumably
I just tried your code with similar results: it does nothing on PyPy
2.0.0-beta2 and Python 2.7.4. But on Python 3.3.1 it caused core dump.
It's a little weird but so is the code. You have defined a function that
calls itself unconditionally. This will cause a stack overflow, which is a
RuntimeErro
On 29 May 2013 13:25, Dave Angel wrote:
> On 05/29/2013 07:48 AM, Joshua Landau wrote:
>
>> Hello all, again. Instead of revising like I'm meant to be, I've been
>> delving into a bit of Python and I've come up with this code:
>>
>>
> To start with, please post in text mode. By using html, you'v
On 29 May 2013 12:48, Joshua Landau wrote:
> Hello all, again. Instead of revising like I'm meant to be, I've been
> delving into a bit of Python and I've come up with this code:
Here's a simpler example that gives similar results:
$ py -3.3
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:
On 05/29/2013 08:45 AM, Oscar Benjamin wrote:
On 29 May 2013 12:48, Joshua Landau wrote:
Hello all, again. Instead of revising like I'm meant to be, I've been
delving into a bit of Python and I've come up with this code:
Here's a simpler example that gives similar results:
$ py -3.3
Python 3
On 29 May 2013 13:30, Marcel Rodrigues wrote:
>
> I just tried your code with similar results: it does nothing on PyPy
2.0.0-beta2 and Python 2.7.4. But on Python 3.3.1 it caused core dump.
> It's a little weird but so is the code. You have defined a function that
calls itself unconditionally. Thi
I think the issue here has little to do with classes/objects/properties.
See, for example, the code posted by Oscar Benjamin.
What that code is trying to do is similar to responding to an "Out Of
Memory" error with something that might require more memory allocation.
Even if we consider the Py3 b
In article ,
Jabba Laci wrote:
> I have a growing JSON file that I edit manually and it might happen
> that I repeat a key. If this happens, I would like to get notified.
The real answer here is that JSON is probably not the best choice for
large files that get hand-edited. For data that you
> The real answer here is that JSON is probably not the best choice for
> large files that get hand-edited. For data that you intend to hand-edit
> a lot, YAML might be a better choice.
>
>> Currently the value of the second key silently overwrites the value of
>> the first.
Thanks but how would
On 29 May 2013 14:02, Dave Angel wrote:
> On 05/29/2013 08:45 AM, Oscar Benjamin wrote:
> Joshua: Avoid doing anything complex inside an exception handler.
Unfortunately, Ranger (the file manager in question) wraps a lot of stuff
in one big exception handler. Hence there isn't much choice. The
On May 29, 5:11 pm, Fábio Santos wrote:
> On 29 May 2013 12:25, "Avnesh Shakya" wrote:
>
>
>
>
>
>
>
>
>
> > hi,
> > I am trying to display my output with different colour on terminal,
> but it's
> > coming with that colour code.
> > Please help me how is it possible?
>
> > my code is -
> > fr
Hello,
On Wed, May 29, 2013 at 03:41:50PM +0200, Jabba Laci wrote:
> > The real answer here is that JSON is probably not the best choice for
> > large files that get hand-edited. For data that you intend to hand-edit
> > a lot, YAML might be a better choice.
> >
> >> Currently the value of the se
On Tuesday, May 28, 2013 3:48:17 PM UTC+2, Steven D'Aprano wrote:
> On Mon, 27 May 2013 13:11:28 -0700, Ahmed Abdulshafy wrote:
>
>
>
> > That may be true for integers, but for floats, testing for equality is
>
> > not always precise
>
>
>
> Incorrect. Testing for equality is always precise,
On Thu, May 30, 2013 at 12:27 AM, Ahmed Abdulshafy wrote:
> Well, this is taken from my python shell>
>
0.33455857352426283 == 0.33455857352426282
> True
>>> 0.33455857352426283,0.33455857352426282
(0.3345585735242628, 0.3345585735242628)
They're not representably different.
ChrisA
--
ht
On May 29, 7:27 pm, Ahmed Abdulshafy wrote:
> On Tuesday, May 28, 2013 3:48:17 PM UTC+2, Steven D'Aprano wrote:
> > On Mon, 27 May 2013 13:11:28 -0700, Ahmed Abdulshafy wrote:
>
> > > That may be true for integers, but for floats, testing for equality is
>
> > > not always precise
>
> > Incorrect.
On May 29, 6:41 pm, Jabba Laci wrote:
> > The real answer here is that JSON is probably not the best choice for
> > large files that get hand-edited. For data that you intend to hand-edit
> > a lot, YAML might be a better choice.
>
> >> Currently the value of the second key silently overwrites th
On 2013-05-28, Carlos Nepomuceno wrote:
> How do you have "invalid@invalid.invalid" instead of your email address?
I have this in my .slrnrc:
set hostname "invalid.invalid"
set username "grant"
set realname "Grant Edwards"
I'm not sure why it doesn't show up as grant@invalid.invalid -- I
th
On May 29, 5:43 pm, Joshua Landau wrote:
> On 29 May 2013 13:25, Dave Angel wrote:
>
> > On 05/29/2013 07:48 AM, Joshua Landau wrote:
>
> >> Hello all, again. Instead of revising like I'm meant to be, I've been
> >> delving into a bit of Python and I've come up with this code:
>
> > To start with
On 2013-05-29, Dan Stromberg wrote:
> And in case you still want a preprocessor for Python (you likely don't need
> one this time), here's an example of doing this using the venerable m4:
> https://pypi.python.org/pypi/red-black-tree-mod . Note the many comments
> added to keep line numbers cons
On Thu, May 30, 2013 at 12:55 AM, Grant Edwards wrote:
> On 2013-05-29, Dan Stromberg wrote:
>
>> And in case you still want a preprocessor for Python (you likely don't need
>> one this time), here's an example of doing this using the venerable m4:
>> https://pypi.python.org/pypi/red-black-tree-m
On 29 May 2013 14:02, Dave Angel wrote:
> On 05/29/2013 08:45 AM, Oscar Benjamin wrote:
>
> More likely a bug in the 2.x interpreter. Once inside an exception handler,
> that frame must be held somehow. If not on the stack, then in some separate
> list. So the logic will presumably fill memory,
On May 29, 2013, at 9:41 AM, Jabba Laci wrote:
>> The real answer here is that JSON is probably not the best choice for
>> large files that get hand-edited. For data that you intend to hand-edit
>> a lot, YAML might be a better choice.
>>
>>> Currently the value of the second key silently overwr
On 2013-05-29, Chris Angelico wrote:
> On Thu, May 30, 2013 at 12:55 AM, Grant Edwards
> wrote:
>> On 2013-05-29, Dan Stromberg wrote:
>>
>>> And in case you still want a preprocessor for Python (you likely don't need
>>> one this time), here's an example of doing this using the venerable m4:
>
On Wed, May 29, 2013 at 4:16 AM, Jabba Laci wrote:
> Hi,
>
> How can you detect if a key is duplicated in a JSON file? Example:
>
> {
> "something": [...],
> ...
> "something": [...]
> }
>
> I have a growing JSON file that I edit manually and it might happen
> that I repeat a key. If t
On Wed, May 29, 2013 at 8:33 AM, rusi wrote:
> 0.0 == 0.0 implies 5.4 == 5.4
> is not a true statement is what (I think) Steven is saying.
> 0 (or if you prefer 0.0) is special and is treated specially.
It has nothing to do with 0 being special. A floating point number
will always equal itself (
On Sun, May 26, 2013 at 4:58 PM, Luca Cerone wrote:
> Hi Chris, first of all thanks for the help. Unfortunately I can't provide the
> actual commands because are tools that are not publicly available.
> I think I get the tokenization right, though.. the problem is not that the
> programs don't
Am 27.05.2013 02:14 schrieb Carlos Nepomuceno:
pipes usually consumes disk storage at '/tmp'.
Good that my pipes don't know about that.
Why should that happen?
Thomas
--
http://mail.python.org/mailman/listinfo/python-list
Is there anything like this in the standard library?
class AnyFactory(object):
def __init__(self, anything):
self.product = anything
def __call__(self):
return self.product
def __repr__(self):
return "%s.%s(%r)" % (self.__class__.__module__, self.__class__.__name__,
self.product)
my use case is:
On 05/29/2013 06:46 PM, Croepha wrote:
Is there anything like this in the standard library?
class AnyFactory(object):
def __init__(self, anything):
self.product = anything
def __call__(self):
return self.product
def __repr__(self):
return "%s.%s(%r)" % (self.__class__.__module__,
self.__class__
On 5/29/2013 1:46 PM, Croepha wrote:
Is there anything like this in the standard library?
class AnyFactory(object):
def __init__(self, anything):
self.product = anything
def __call__(self):
return self.product
def __repr__(self):
return "%s.%s(%r)" % (self.__class__.__module__,
self.__class__._
On 29 May 2013 18:51, "Croepha" wrote:
>
> Is there anything like this in the standard library?
>
> class AnyFactory(object):
> def __init__(self, anything):
> self.product = anything
> def __call__(self):
> return self.product
> def __repr__(self):
> return "%s.%s(%r)" % (self.__class__.__module_
On Wed, May 29, 2013 at 11:46 AM, Croepha wrote:
> Is there anything like this in the standard library?
>
> class AnyFactory(object):
> def __init__(self, anything):
> self.product = anything
> def __call__(self):
> return self.product
> def __repr__(self):
> return "%s.%s(%r)" % (self.__class__._
Hi, all.
pySerial is probably "the solution" for serial port programming.
Physical serial port is dead on PC but USB-to-Serial give it a second
life. Serial port stuff won't interest end users at all. But it is
still used in the EE world and so on. Arduino uses it to upload
programs. Sensors may u
On Wed, May 29, 2013 at 12:19 PM, Fábio Santos wrote:
> Are you sure you don't want to use a lambda expression? They are pretty
> pythonic.
>
> none_factory = lambda: None
> defaultdict_none_factory = lambda: defaultdict(none_factory)
>
> collections.defaultdict(defaultdict_none_factory)
Gah. If
This notation displays hex values except when they are 'printable', in which
case it displays that printable character. How do I get it to force hex for
all bytes? Thanks, Steve
--
http://mail.python.org/mailman/listinfo/python-list
A bit more context.
If visiting z.cn (Amazon China), one can see that there are plenty of
new (published in 2010 or later) books on QBASIC, Visual Basic, Visual
Foxpro.
This is weird, if one want to do development legally these tools won't
be a option for new programmers.
However, I also like to
Hi, list.
I hope this is not a duplicate of older question. If so, drop me a
link is enough.
I've used Python here and there, just for the sweet libraries though.
For the core language, I have mixed feeling. On one hand, I find that
Python has some sweet feature that is quite useful. On the othe
On Thu, May 30, 2013 at 4:37 AM, Ma Xiaojun wrote:
> Yes, Python has much more libraries. But it seems that Python is more
> useful and suitable in CLI and Web applications. People are still
> discussing whether to replace tkinter with wxPython or not. VB and VFP
> people are never bothered with s
On Wed, May 29, 2013 at 12:33 PM, alcyon wrote:
> This notation displays hex values except when they are 'printable', in which
> case it displays that printable character. How do I get it to force hex for
> all bytes? Thanks, Steve
Is this what you want?
>>> ''.join('%02x' % x for x in b'hel
> From: nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa...@spamschutz.glglgl.de
> Subject: Re: Piping processes works with 'shell = True' but not otherwise.
> Date: Wed, 29 May 2013 19:39:40 +0200
> To: python-list@python.org
>
> Am 27.05.2013 02:14 schrieb Carlo
On 2013-05-29, Ma Xiaojun wrote:
> pySerial is probably "the solution" for serial port programming.
> Physical serial port is dead on PC but USB-to-Serial give it a second
> life. Serial port stuff won't interest end users at all. But it is
> still used in the EE world and so on. Arduino uses it
On May 29, 2013, at 2:23 PM, Ma Xiaojun wrote:
> Hi, all.
>
> pySerial is probably "the solution" for serial port programming.
> Physical serial port is dead on PC but USB-to-Serial give it a second
> life. Serial port stuff won't interest end users at all. But it is
> still used in the EE world
On Thu, 30 May 2013 04:54:44 +1000, Chris Angelico wrote:
> GUIs and databasing are two of the areas where I
> think Python's standard library could stand to be improved a bit.
> There are definitely some rough edges there.
Dunno what you mean about "standard library", but I'm very happy with
w
You might try http://wiki.python.org/moin/BeginnersGuide
--
MarkJ
Tacoma, Washington
--
http://mail.python.org/mailman/listinfo/python-list
On 5/29/2013 4:00 PM, William Ray Wing wrote:
On May 29, 2013, at 2:23 PM, Ma Xiaojun wrote:
Hi, all.
pySerial is probably "the solution" for serial port programming.
Physical serial port is dead on PC but USB-to-Serial give it a second
life. Serial port stuff won't interest end users at all.
On 5/29/2013 3:47 PM, Grant Edwards wrote:
On 2013-05-29, Ma Xiaojun wrote:
pySerial is probably "the solution" for serial port programming.
Physical serial port is dead on PC but USB-to-Serial give it a second
life. Serial port stuff won't interest end users at all. But it is
still used in th
On 30May2013 02:13, Ma Xiaojun wrote:
| For the core language, I have mixed feeling. On one hand, I find that
| Python has some sweet feature that is quite useful. On the other hand,
| I often find Pyhton snippets around hard to understand.
I think you will find that is lack of practice. I find P
On 29May2013 13:14, Ian Kelly wrote:
| On Wed, May 29, 2013 at 12:33 PM, alcyon wrote:
| > This notation displays hex values except when they are 'printable', in
which case it displays that printable character. How do I get it to force hex
for all bytes? Thanks, Steve
|
| Is this what you wa
On 29/05/2013 22:38, Terry Jan Reedy wrote:
On 5/29/2013 4:00 PM, William Ray Wing wrote:
On May 29, 2013, at 2:23 PM, Ma Xiaojun wrote:
Hi, all.
pySerial is probably "the solution" for serial port programming.
Physical serial port is dead on PC but USB-to-Serial give it a second
life. Seria
On 29May2013 19:39, Thomas Rachel
wrote:
| Am 27.05.2013 02:14 schrieb Carlos Nepomuceno:
| >pipes usually consumes disk storage at '/tmp'.
|
| Good that my pipes don't know about that.
| Why should that happen?
It probably doesn't on anything modern. On V7 UNIX at least there
was a kernel noti
On 05/29/2013 12:50 PM, Ian Kelly wrote:
On Wed, May 29, 2013 at 8:33 AM, rusi wrote:
0.0 == 0.0 implies 5.4 == 5.4
is not a true statement is what (I think) Steven is saying.
0 (or if you prefer 0.0) is special and is treated specially.
It has nothing to do with 0 being special. A floating
On Wed, May 29, 2013 at 11:13 AM, Ma Xiaojun wrote:
> Hi, list.
>
> For the core language, I have mixed feeling. On one hand, I find that
> Python has some sweet feature that is quite useful. On the other hand,
> I often find Pyhton snippets around hard to understand. I admit that I
> never learn
On Thu, May 30, 2013 at 8:24 AM, Dan Stromberg wrote:
> I'm finding it kind of hard to imagine not finding Python's syntax and
> semantics pretty graceful.
>
> About the only thing I don't like is:
>
>var = 1,
>
> That binds var to a tuple (singleton) value, instead of 1.
>
> Oh, and method de
I've already mailed the author, waiting for reply.
For Windows people, downloading a exe get you pySerial 2.5, which
list_ports and miniterm feature seems not included. To use 2.6,
download the tar.gz and use standard "setup.py install" to install it
(assume you have .py associated) . There is no
On Wed, 29 May 2013 10:50:47 -0600, Ian Kelly wrote:
> On Wed, May 29, 2013 at 8:33 AM, rusi wrote:
>> 0.0 == 0.0 implies 5.4 == 5.4
>> is not a true statement is what (I think) Steven is saying. 0 (or if
>> you prefer 0.0) is special and is treated specially.
>
> It has nothing to do with 0 bei
On May 30, 6:14 am, Ma Xiaojun wrote:
> What interest me is a one liner:
> print '\n'.join(['\t'.join(['%d*%d=%d' % (j,i,i*j) for i in
> range(1,10)]) for j in range(1,10)])
Ha,Ha! The join method is one of the (for me) ugly features of python.
You can sweep it under the carpet with a one-line jo
On Wed, 29 May 2013 11:20:59 -0400, Roy Smith wrote:
>> How to process (read) YAML files in Python?
>
> Take a look at http://pyyaml.org/
Beware that pyaml suffers from the same issue as pickle, namely that it
can execute arbitrary code when reading untrusted data.
--
Steven
--
http://mail.
On Wed, May 29, 2013 at 1:10 PM, Chris Rebert wrote:
> On Wed, May 29, 2013 at 4:16 AM, Jabba Laci wrote:
> > I have a growing JSON file that I edit manually and it might happen
> > that I repeat a key. If this happens, I would like to get notified.
> > Currently the value of the second key sile
On Thu, May 30, 2013 at 12:28 PM, Steven D'Aprano
wrote:
> * de facto exact equality testing, only slower and with the *illusion* of
> avoiding equality, e.g. "abs(x-y) < sys.float_info.epsilon" is just a
> long and slow way of saying "x == y" when both numbers are sufficiently
> large;
>
The pro
On Thu, May 30, 2013 at 7:01 AM, Walter Hurry wrote:
> On Thu, 30 May 2013 04:54:44 +1000, Chris Angelico wrote:
>
>
>> GUIs and databasing are two of the areas where I
>> think Python's standard library could stand to be improved a bit.
>> There are definitely some rough edges there.
>
> Dunno w
On Thu, May 30, 2013 at 10:24 AM, Dan Stromberg wrote:
> I'm finding it kind of hard to imagine not finding Python's syntax and
> semantics pretty graceful.
>
> About the only thing I don't like is:
>
>var = 1,
>
> That binds var to a tuple (singleton) value, instead of 1.
I agree, and would
On 2013-05-29, Terry Jan Reedy wrote:
> On 5/29/2013 3:47 PM, Grant Edwards wrote:
>> On 2013-05-29, Ma Xiaojun wrote:
[...]
>>> Unforunately, pySerial project doesn't seem to have a good state. I
>>> find pySerial + Python 3.3 broken on my machine (Python 2.7 is OK) .
>>> There are unanswered ou
I have a prototype data assimilation code ( an ionospheric nowcast/forecast
model driven by GPS data ) that is written in IDL (interactive data language)
which is a horrible language choice for scaling the application up to large
datasets as IDL is serial and slow (interpreted).
I am embarking
On Wed, 29 May 2013 07:27:40 -0700, Ahmed Abdulshafy wrote:
> On Tuesday, May 28, 2013 3:48:17 PM UTC+2, Steven D'Aprano wrote:
>> On Mon, 27 May 2013 13:11:28 -0700, Ahmed Abdulshafy wrote:
>>
>>
>>
>> > That may be true for integers, but for floats, testing for equality
>> > is
>>
>> > not a
On Thu, May 30, 2013 at 3:10 PM, Steven D'Aprano
wrote:
> # Wrong, don't do this!
> x = 0.1
> while x != 17.3:
> print(x)
> x += 0.1
>
Actually, I wouldn't do that with integers either. There are too many
ways that a subsequent edit could get it wrong and go infinite, so I'd
*always* use
On Wed, 29 May 2013 20:23:00 -0400, Dave Angel wrote:
> Even in a pure decimal system of (say)
> 40 digits, I could type in a 42 digit number and it would get quantized.
> So just because two 42 digit numbers are different doesn't imply that
> the 40 digit internal format would be.
Correct, and
On Thu, 30 May 2013 13:45:13 +1000, Chris Angelico wrote:
> Let's suppose someone is told to compare floating point numbers by
> seeing if the absolute value of the difference is less than some
> epsilon.
Which is usually the wrong way to do it! Normally one would prefer
*relative* error, not a
On Thu, 30 May 2013 02:37:35 +0800, Ma Xiaojun wrote:
> For pure procedural paradigm, I haven't seen much advantages of Python.
Nice syntax with a minimum of boiler plate -- "executable pseudo-code",
as they say. Extensive library support -- "batteries included". These are
both good advantages
On Wed, 29 May 2013 12:46:19 -0500, Croepha wrote:
> Is there anything like this in the standard library?
>
> class AnyFactory(object):
> def __init__(self, anything):
> self.product = anything
> def __call__(self):
> return self.product
> def __repr__(self):
>
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