Hi all,
this is a test message after tweaking my self-hosted mail server and the
subject is just in case if you receive it
https://declassed.art/en/blog/2022/06/29/clabate-class-based-templates
Previously I tried to reply to someone here but the message was
rejected. Did not post to mail lis
trying to connect to MYSQL it appears the error msg below:
InterfaceError: 2003: Can't connect to MySQL server on 'localhost:3306'
(111 Connection refused)
[image: conexao.png]
How can i fix that.?
What do you use for connection?
Does the firewall interfere with the connection?
Firewall usua
Hi there,
is there a library to call functions in context of a thread? For
example, as in asyncsqlite which has a thread and a queue I mean has
anyone generalized such an approach already?
If not, I'll do it myself, no problem.
It's a kind of tiny stuff, like atomicwrites, which is quite dif
Did you check the ThreadPoolExecutor or the ProcessPoolExecutor? They
won't give you atomic writes unless you add a Lock or a Condition, but
they will execute your code in another thread or process.
Yes, I did, but they are too complicated to use. I'd like something for
humans, such as
asynch
Hi there,
this is rather a philosophical question, but I assume I miss something.
I don't remember I ever used else clause for years I was with python and
my expectation was it executed only if the the main body was never run.
Ha-ha! I was caught by this mental trap.
So, seriously, why they
Got it, thanks!
Actually the reason I never used "else" was the violation of the rule of
beauty "shortest block first". With if--else you can easily follow this
rule by inverting "if" expression, but with for--else you can't. The
loop body of the simplest example is already three lines, in rea
On 09/10/2022 05:47, Chris Angelico wrote:
On Sun, 9 Oct 2022 at 15:39, Axy via Python-list wrote:
Got it, thanks!
Actually the reason I never used "else" was the violation of the rule of
beauty "shortest block first". With if--else you can easily follow this
r
Yes, I'm aware that code readability becomes irrelevant for
short-duration projects. Beside the point. I'm wondering how important
it really is to have the shortest block first.
I also might be wrong in terminology, anyway, there are many rules that
make programmer's life easier, described in
Since many languages allow placing multiple statements on one line or
spreading one over many lines, it seems that the number of lines in code
can be adjusted.
If I have a line like:
Alpha, beta, gamma, delta = 1, 2, 3, 4
Could that be rewritten as 4 or more lines?
Surely! Especially if
On 09/10/2022 03:33, Jach Feng wrote:
Axy 在 2022年10月8日 星期�
�上午11:39:44 [UTC+8] 的信中寫道：
Hi there,
this is rather a philosophical question, but I assume I miss something.
I don't remember I ever used else clause for years I was with python and
my expectation was it executed only if the the main bo
Not sure what you mean, but a for-else without a break is quite
useless. What exactly ARE you arguing here?
The else is associated with the break to the exact extent that one is
essential to the other's value.
I'm not arguing. That was just for the record, how things are done in
Python. Bas
On 10/10/2022 12:24, Chris Angelico wrote:
On Mon, 10 Oct 2022 at 21:57, Axy via Python-list
wrote:
Not sure what you mean, but a for-else without a break is quite
useless. What exactly ARE you arguing here?
The else is associated with the break to the exact extent that one is
essential
On 10/10/2022 15:52, Weatherby,Gerard wrote:
Core developer Raymond Hettinger explains the history starting at 15:40
https://www.youtube.com/watch?v=OSGv2VnC0go
(which I found on stackoverflow
https://stackoverflow.com/questions/9979970/why-does-python-use-else-after-for-and-while-loops
)
T
On 10/10/2022 15:52, Weatherby,Gerard wrote:
I wonder if for/else could have been less confusing if it was
referred to
as for-break-else and if the else clause was only valid syntax if the
for
loop actually contained a break statement in the first place.
Sounds reasonable. It would be somet
On 10/10/2022 19:25, Weatherby,Gerard wrote:
pylint, at least, provides a warning:
fe.py:4:0: W0120: Else clause on loop without a break statement
(useless-else-on-loop)
I'm using flake8, it does not, alas.
Axy.
--
https://mail.python.org/mailman/listinfo/python-list
On 10/10/2022 06:15, avi.e.gr...@gmail.com wrote:
Chris, a short(er) answer to your addition below.
I did not at first share your perception but maybe do now. If the argument
was that ELSE and other constructs like FINALLY or CATCH are horrible
because they follow other code and important thin
Well, although I never used pandas and never will, if that's about
artworks, that's mine.
Obviously, you need to iterate columns and sum values returned by the
snippet you provided. A quick search tells us to use colums property.
So, it might look like this:
na_sum = sum(df[name].isnull().su
On 16/10/2022 18:43, Antoon Pardon wrote:
Op 16/10/2022 om 17:03 schreef Avi Gross:
Interesting idea, Anton.
I would be interested in hearing more detail on how it would work.
Although much of programming has been centered on the Latin alphabet
and especially English, that may change. I can
I mean, it's worth to look at BeautifulSoup source how do they do that.
With BS I work with attributes exactly as you want, and I explicitly
tell BS to use lxml parser.
Axy.
On 19/10/2022 14:25, Robert Latest via Python-list wrote:
Hi all,
For the impatient: Below the longish text is a fully s
I have no idea why, I used to remove namespaces, following the advice
from stackoverflow:
https://stackoverflow.com/questions/4255277/lxml-etree-xmlparser-remove-unwanted-namespace
_ns_removal_xslt_transform = etree.XSLT(etree.fromstring('''
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
On 11/11/2022 16:21, Ian Pilcher wrote:
Is it possible to access the name of a superclass static method, when
defining a subclass attribute, without specifically naming the super-
class?
Contrived example:
class SuperClass(object):
@staticmethod
def foo():
pass
class
On 14/11/2022 17:14, Stephen Tucker wrote:
Hi,
I have two related issues I'd like comments on.
Issue 1 - Global Values
Your "global variables" module acts exactly as a singleton class. Funny,
you could (and maybe you do) write in your functions
import global_vars_module as self
as the fir
On 15/11/2022 04:36, Dan Stromberg wrote:
On Mon, Nov 14, 2022 at 11:33 AM Axy via Python-list
wrote:
On 14/11/2022 17:14, Stephen Tucker wrote:
> Hi,
>
> I have two related issues I'd like comments on.
>
> Issue 1 - Global Values
Your "
On 18/11/2022 10:53, Stefan Ram wrote:
Can I use "sys.argv" to pass information between modules
as follows?
in module A:
import sys
sys.argv.append( "Hi there!" )
in module B:
import sys
message = sys.argv[ -1 ]
This idea has a couple of flaws so can be regarded as bad.
However
On 08/12/2022 17:52, Aarnav Mahavir Bos wrote:
Hello all,
I would like to share Panoptisch, a FOSS(Free and Open Source Software)
tool I've been working on.
Hi there,
I added your project to my watch list, keep on your work.
A couple of points:
First, I glanced at the code and in the very f
Hi there,
although it's quite old my side project, it has reached the point where
I don't want to add anything more.
It's a simple template system based on standard string formatting. You
declare your template strings as class attributes and they are formatted
in the right order. For dynamic
Hi all,
what do you see looking at format string syntax
https://docs.python.org/3/library/string.html#formatstrings ?
In particular, at something like this:
{h[1].red.jumbo-header:Hello, World!}
Yes, this is syntactically correct statement and if we tweak Formatter
methods, we can generate
Looks like the data to be written is buffered, so actual write takes
place after readlines(), when close() flushes buffers.
See io package documentation, BufferedIOBase.
The solution is file.flush() after file.write()
Can't deny, such a behaviour looks utterly weird. Try to avoid designing
yo
On 21/02/2023 04:13, Hen Hanna wrote:
(A) print( max( * LisX ))
(B) print( sum( * LisX ))<--- Bad syntax !!!
What's most surprising is (A) is ok, and (B) is not.
even tho' max() and sum() have (basically) the same sy
On 21/02/2023 19:11, avi.e.gr...@gmail.com wrote:
In your own code, you may want to either design your own functions, or use them
as documented or perhaps create your own wrapper functions that carefully
examine what you ask them to do and re-arrange as needed to call the
function(s) you want
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