I realized that the person seeking completeness in Python may next ask why
the Walrus operator, :=, is not properly extended to include a whole
assortment of allowed assignment operators
I mean in normal python programs you are allowed to abbreviate
x = x + 5
with
x += 5
Similar
I just realized I left out **= so my apologies. Are there other such
abbreviations and does anyone use them?
-Original Message-
From: Python-list On
Behalf Of Avi Gross via Python-list
Sent: Wednesday, October 27, 2021 8:57 PM
To: [email protected]
Subject: walrus with a twist
Wednesday, October 27, 2021 9:11 PM
To: Python
Subject: Re: walrus with a twist :+= or ...
On Thu, Oct 28, 2021 at 11:58 AM Avi Gross via Python-list
wrote:
> On a serious note, if it was ever considered a good idea, what would
> be an acceptable sequence of symbols that might not b
we got along fine before a walrus came along, ...
or did we?
-Original Message-
From: Python-list On
Behalf Of MRAB
Sent: Wednesday, October 27, 2021 9:21 PM
To: [email protected]
Subject: Re: walrus with a twist :+= or ...
On 2021-10-28 02:06, Avi Gross via Python-list wrote:
>
On 2021-10-28, Paul Rubin wrote:
> Chris Angelico writes:
>> But it all depends on the exact process being done, which is why I've
>> been asking for real examples.
>
> My most frequent use case for walrus is so common that I have sometimes
> implemented a special class for it:
>
>if g := re.
Names can be taken too far as the same variable may have different
connotations in one place than another.
Say I am counting how many of something and incrementing variable HowMany as
I go along and initialized to zero. Then I want to test if I have any and
instead of:
if (HowMany > 0)
I
Antoon,
You keep beating a dead horse. NOBODY denies there are benefits to suggestions
like the one we are describing. It is a logical fallacy to keep arguing this
way.
And nobody (meaning me) suggests costs are a dominant factor in decisions no
matter the benefits. The realistic suggest
ything like I am describing (or something much better)
is being looked at?
-Original Message-
From: Python-list On
Behalf Of Peter J. Holzer
Sent: Thursday, October 28, 2021 5:08 AM
To: [email protected]
Subject: Re: walrus with a twist :+= or ...
On 2021-10-27 22:15:09 -0400, Avi
Stefan,
I choose not to get involved in a discussion about arbitrary naming rules as
many languages and programmers have their own ideas and preferences and rules.
My examples were EXAMPLES and the actual names are irrelevant. Feel free not to
use them and I assure you I have no plans to either
, that should do even on standard keyboards.
∴
-Original Message-
From: Python-list On
Behalf Of Chris Angelico
Sent: Thursday, October 28, 2021 3:24 PM
To: Python
Subject: Re: walrus with a twist :+= or ...
On Fri, Oct 29, 2021 at 5:53 AM Avi Gross via Python-list
wrote:
> Is ther
On 2021-10-28, Greg Ewing wrote:
> On 29/10/21 11:34 am, Chris Angelico wrote:
>> On Fri, Oct 29, 2021 at 7:31 AM Mostowski Collapse
>> wrote:
>>> QA engineer walks into a bar. Orders a beer. Orders 0 beers.
>>> Orders 9 beers. Orders a lizard. Orders -1 beers.
>>> Orders a sfdeljknesv.
29, 2021 10:04 AM
To: [email protected]
Subject: Re: New assignmens ...
Op 28/10/2021 om 19:36 schreef Avi Gross via Python-list:
> Now for a dumb question. Many languages allow a form of setting a variable to
> a value like:
>
>
>
> assign(var, 5+sin(x))
When people post multiple comments and partial answers and the reply every time
is to ask for more; there may be a disconnect.
Some assume that the person is just stuck but generally can go forward with a
little hint. But when you keep being asked for more, maybe it means they want
you to do it
In the following code, I am trying to create some key-value pairs in a
dictionary where the first element is a name and the second element is a
dataframe.
# Creating a dictionary
data = {'Value':[0,0,0]}
kernel_df = pd.DataFrame(data, index=['M1','M2','M3'])
dict = {'dummy':kernel_df}
# dummy -
>Try this instead:
>
>
> dict[name] = pd.concat([dict[name], values])
OK. That fixed the problem, however, I see that they are concatenated
vertically. How can I change that to horizontal? The printed dictionary in the
end looks like
{'dummy': Value
M1 0
M2 0
M3 0, 'K1':
>The second argument of pd.concat is 'axis', which defaults to 0. Try
>using 1 instead of 0.
Unfortunately, that doesn't help...
dict[name] = pd.concat( [dict[name],values], axis=1 )
{'dummy': Value
M1 0
M2 0
M3 0, 'K1':Value Value
0 10.0NaN
15.0NaN
2
Hello Team,
I'm trying to add logs in the new relic platform from a python application.
For that, I've to add logs in a local file in a specific format which is
'{"log.level":"%(levelname)s", "log.entity.name":"my-service-name",
"message":"%(message)s"}'
This works fine in normal scenario and g
On 2021-11-10, Paulo da Silva wrote:
> Hi!
>
> How do I handle a SIGINT (or any other signal) avoid nesting?
I don't think you need to. Python will only call signal handlers in
the main thread, so a handler can't be executed while another handler
is running anyway.
--
https://mail.python.org/mai
On Thu, 11 Nov 2021 17:22:15 +1100, Chris Angelico wrote:
> Threads aren't the point here - signals happen immediately.
Actually, signals are not delivered immediately. Signals are delivered
the next time the process gets its turn on CPU. The process scheduler
will make process runnable and the
Hi
In the following dataframe, I want to get the index string by specifying the
row
number which is the same as value column.
Value
global loads 0
global stores 1
local loads 2
For example, `df.iloc[1].index.name` should return "global store
>>> df.iloc[1].name
Correct I also see that 'df.index[1]' works fine.
Thanks.
Regards,
Mahmood
--
https://mail.python.org/mailman/listinfo/python-list
Hi
While reading a csv file, some cells have values like '1,024' which I mean they
contains thousand separator ','. Therefore, when I want to process them with
row = df.iloc[0].astype(int)
I get the following error
ValueError: invalid literal for int() with base 10: '1,024'
How can I fi
> (see
> https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html)
Got it. Thanks.
Regards,
Mahmood
--
https://mail.python.org/mailman/listinfo/python-list
On 2021-11-17, Skip Montanaro wrote:
> Is the proliferation of packaging formats in Python as nutzo as this author
> believes?
>
> https://drewdevault.com/2021/11/16/Python-stop-screwing-distros-over.html
>
> Asking because I've never been in the business of releasing "retail" Python
> application
Hi
I am using the following versions
>>> import matplotlib
>>> print(matplotlib. __version__)
3.3.4
>>> import pandas as pd
>>> print(pd.__version__)
1.2.3
>>> import sys
>>> sys.version_info
sys.version_info(major=3, minor=8, micro=10, releaselevel='final', serial=0)
In my code, I use axes in
>It's not saying get_axes doesn't exist because of version skew, it's
>saying that the object returned by the call to the left of it
>(get_figure()) returned None, and None doesn't have methods
>
>Something isn't set up right, but you'll have to trace that through.
Do you think the following
>And what is the result of plot()? Is it a valid object, or is it None?
Well the error happens on the plot() line. I tried to print some information
like this:
print("axes=", axes)
print("axes[0]=", axes[0])
print("cnt=", cnt)
print("row=", row)
ax1 = row.plot( fontsize=fon
This discussion gets tiresome for some.
Mathematics is a pristine world that is NOT the real world. It handles
near-infinities fairly gracefully but many things in the real world break
down because our reality is not infinitely divisible and some parts are
neither contiguous nor fixed but in some
g
Subject: Re: Unexpected behaviour of math.floor, round and int functions
(rounding)
On Sun, Nov 21, 2021 at 8:32 AM Avi Gross via Python-list
wrote:
>
> This discussion gets tiresome for some.
>
> Mathematics is a pristine world that is NOT the real world. It handles
> near-infinit
On 20/11/2021 22:59, Avi Gross via Python-list wrote:
there are grey lines along the way where some
mathematical proofs do weird things like IGNORE parts of a calculation by
suggesting they are going to zero much faster than other parts and then wave
a mathematical wand about what happens when
Can I suggest a way to look at it, Grant?
In base 10, we represent all numbers as the (possibly infinite) sum of ten
raised to some integral power.
123 is 3 times 1 (ten to the zero power) plus
2 times 10 (ten to the one power) plus
1 times 100 (ten to the two power)
123.456 just extends this wi
not expected
to apply for a non-abelian case.
-Original Message-
From: Python-list On
Behalf Of Rob Cliffe via Python-list
Sent: Saturday, November 20, 2021 6:19 PM
To:
Subject: Re: Unexpected behaviour of math.floor, round and int functions
(rounding)
On 20/11/2021 22:59, Avi Gross
On 21/11/2021 01:02, Chris Angelico wrote:
If you have a number with a finite binary representation, you can
guarantee that it can be represented finitely in decimal too.
Infinitely repeating expansions come from denominators that are
coprime with the numeric base.
Not quite, e.g. 1/14 is
om: Python-list On
Behalf Of Chris Angelico
Sent: Saturday, November 20, 2021 6:23 PM
To: [email protected]
Subject: Re: Unexpected behaviour of math.floor, round and int functions
(rounding)
On Sun, Nov 21, 2021 at 10:01 AM Avi Gross via Python-list
wrote:
> Computers generally
-
From: Python-list On
Behalf Of Chris Angelico
Sent: Saturday, November 20, 2021 8:03 PM
To: [email protected]
Subject: Re: Unexpected behaviour of math.floor, round and int functions
(rounding)
On Sun, Nov 21, 2021 at 11:39 AM Avi Gross via Python-list
wrote:
>
> Can I suggest a
>The best way to get
>assistance here on the list is to create a minimal, self-contained,
>run-able, example program that you can post in its entirety here that
>demonstrates the issue.
I created a sample code with input. Since the code processes a csv file to
group input rows, I also included t
>I installed the latest pandas, although on Python 3.10, and the script
>worked without a problem.
Yes as I wrote it works with 1.3.3 but mine is 1.2.3.
I am trying to keep the current version because of the possible future
consequences. In the end maybe I have to upgrade the pandas.
Regards,
>Your example isn't minimal enough for me to be able to pin it down any
>better than that, though.
Chris,
I was able to simply it even further. Please look at this:
$ cat test.batch.csv
Value,Value
10,2
5,2
10,2
$ cat test.py
import pandas as pd
import csv,sys
import matplotlib
import matplot
Hi
I asked a question some days ago, but due to the lack of minimal producing
code, the topic got a bit messy. So, I have decided to ask it in a new topic
with a clear minimum code.
With Pandas 1.2.3 and Matplotlib 3.3.4, the following plot() functions returns
error and I don't know what is wr
On 2021-11-22, ast wrote:
> Hi,
>
> >>> a = 6
> >>> b = 6
> >>> a is b
> True
>
> ok, we all know that Python creates a sole instance
> with small integers, but:
>
> >>> import copy
> >>> b = copy.copy(a)
> >>> a is b
> True
>
> I was expecting False
Why did you expect False?
For immutable types
>I can help you narrow it down a bit. The problem actually occurs inside
>this function call somehow. You can verify this by doing this:
>
>
>fig,axes = plt.subplots(2,1, figsize=(20, 15))
>
>print ("axes[0].get_figure()=",axes[0].get_figure())
>
>You'll find that get_figure() is returning None, wh
I am not sure what your real problem is, Ulli, but many antivirus programs
can be TEMPORARILY shut off. Not highly recommended, of course, but if you
properly disable it on a newly rebooted system running little, and it still
happens, then something else may be going on.
If one recognizes your cod
You could evaluate y separately:
yval =
for item in x[:-yval] if yval else x:
[do stuff]
or you could do it using the walrus operator:
for item in x[:-yval] if (yval := ) else x:
[do stuff]
or, perhaps simplest, you could do
for item in x[:-y or None]: # a value of None for a slice a
Have you tried using Nuitka - rather than pyInstalller - it means you
distribute a single executable and the Python run time library (which
they probably have already), and it has the advantage that it is a bit
quicker than standard python.
Rather than bundle the source code and interpreter in
I have a C program that forks to create a child process and uses execv to call
a Python program. The Python program communicates with the parent process (in
C) through a FIFO pipe monitored with epoll().
The Python child process is in a while True loop, which is intended to keep it
running w
hat's nonblocking by default.
The child will become more complex, but not in a way that affects polling. And
thanks for the tip about the c-string termination.
Nov 29, 2021, 14:12 by [email protected]:
>
>
>> On 29 Nov 2021, at 20:36, Jen Kris via Python-list
>&
useful to understand in detail what is behind os.open().
>
> Barry
>
>
>
>
>>
>>
>> Nov 29, 2021, 14:12 by >> [email protected]>> :
>>
>>>
>>>
>>>> On 29 Nov 2021, at 20:36, Jen Kris via Python-list <>>&g
If for ... else was spelt more intelligibly, e.g. for ... nobreak, there
would be no temptation to use anything like `elif'. `nobreakif' wouldn't
be a keyword.
Rob Cliffe
On 30/11/2021 06:24, Chris Angelico wrote:
for ns in namespaces:
if name in ns:
print("Found!")
brea
A new library called pagesign (Python-age-sign) has been released on PyPI [1].
It covers similar functionality to python-gnupg, but uses the modern encryption
tool
age [2] and the modern signing tool minisign [3]. The initial release allows
you to:
* Create and manage identities (which are conta
e opened as rdwr in Python because that's
>>>> nonblocking by default. The child will become more complex, but not in a
>>>> way that affects polling. And thanks for the tip about the c-string
>>>> termination.
>>>>
>>>>
>&g
gt;>
>>> Barry
>>>
>>>
>>>
>>>>
>>>>
>>>>
>>>> Nov 30, 2021, 11:42 by >>>> [email protected]>>>> :
>>>>
>>>>>
>>>>>
>>>>>
>>>>>> On 29 Nov 202
Hello,
I have already posted a message some time ago for this app. Since then, I
didn't code in python or made any changes. I think before getting further with
functionnalities a few things or the whole thing need to be changed.
For exemple, it would need a button to pick folders and maybe ask if
t;).
You may be confused by the fact that threads are called light-weight processes.
Or maybe I'm confused :)
If you have other information, please let me know. Thanks.
Jen
Dec 5, 2021, 18:08 by [email protected]:
> On 2021-12-06 00:51:13 +0100, Jen Kris via Python-list wrote:
>
@barrys-emacs.org:
>
>
>> On 6 Dec 2021, at 17:09, Jen Kris via Python-list
>> wrote:
>>
>> I can't find any support for your comment that "Fork creates a new
>> process and therefore also a new thread." From the Linux man pages
>> htt
Hello
ti 7. jouluk. 2021 klo 19.47 vani arul ([email protected]) kirjoitti:
> Hey There,
> Can someone help to understand how a python function can return value with
> using return in the code?
> It is not not about explicit or implicit function call.
>
>
Not sure whether I understood your que
Hello,
ti 7. jouluk. 2021 klo 20.08 Chris Angelico ([email protected]) kirjoitti:
> On Wed, Dec 8, 2021 at 4:55 AM Julius Hamilton
> wrote:
> >
> > Hey,
> >
> > Could anyone please comment on the purest way simply to strip HTML tags
> > from the internal text they surround?
> >
> > I know Beautif
I started this post on November 29, and there have been helpful comments since
then from Barry Scott, Cameron Simpson, Peter Holzer and Chris Angelico.
Thanks to all of you.
I've found a solution that works for my purpose, and I said earlier that I
would post the solution I found. If anyone
I've recently released version 0.3.4 of distlib on PyPI [1]. For newcomers,
distlib is a library of packaging functionality which is intended to be
usable as the basis for third-party packaging tools.
The main changes in this release are as follows:
* Fixed #153: Raise warnings in get_distributio
On 2021-12-08, Julius Hamilton wrote:
> 1. The HTML extraction is not perfect. It doesn’t produce as clean text as
> I would like. Sometimes random links or tags get left in there. And the
> sentences are sometimes randomly broken by newlines.
Oh. Leaving tags in suggests you are doing this very
Hello,
On 12/8/21 11:29, vani arul wrote:
Thanks for your help.
I am not good at programming.My code works perfectly.But I am bit
confused about the return values.
Binary Search Program
/def Binarysearch(a,key):
l=0
r=len(a)-1
while l<=r:
med = (l+r)//2
if key==a
Obviously something is wrong elsewhere but I'm not sure where to look.
Ubuntu 20.04 with plenty of RAM.
def __del__(self):
try:
for context_obj in self._context_refs:
try:
delattr(context_obj, self._attr_name)
except Att
On 13/12/2021 12:42 pm, Chris Angelico wrote:
On Mon, Dec 13, 2021 at 12:31 PM Mike Dewhirst via Python-list
wrote:
Obviously something is wrong elsewhere but I'm not sure where to look.
Ubuntu 20.04 with plenty of RAM.
def __del__(self):
try:
for context_o
Julius Hamilton wrote:
> dir(scrapy) shows this:
>
> ['Field', 'FormRequest', 'Item', 'Request', 'Selector', 'Spider',
> '__all__', '__builtins__', '__cached__', '__doc__', '__file__',
> '__loader__', '__name__', '__package__', '__path__', '__spec__',
> '__version__', '_txv', 'exceptions', 'http',
Isn't TypeError built in? On 2021-12-13 12:22:28 +1100, Mike Dewhirst via
Python-list wrote:> Obviously something is wrong elsewhere but I'm not sure
where to look.> Ubuntu 20.04 with plenty of RAM.[...]> [Mon Dec 13
01:15:49.885659 2021] [mpm_event:notice] [pid 1033:tid> 140
I am not an expert on the topic but my first reaction is it depends on how
the data is corrupted and we do not know that. So I am addressing a more
general concept here.
Some algorithms break if a single byte or even bit changes and nothing
beyond that point makes sense. Many encryption techniques
Beauty of Recursion?
Well, there is what I call Mathematical Beauty, and then there is reality.
It is fantastic to prove neat theorems that something is possible by methods
like mathematical induction that in some sense use recursion as in if
something is true for some base value and it can be sh
I am sure some people have a sense of humor, but anyone on this forum who
actually does not have some idea of what various "tree" data structures are
in computer science, probably won't get any replies from me when asking such
questions.
But indeed there are things closer to classical trees that a
This entire thread seems a bit IFFY to me.
It does seme like HW to me but also a bit peripheral.
The fact that the data is in EXCEL is a detail. And unless a spreadheet is
complex, it may be trivial to save the file as a .CSV and from then on read
from there into Python (or anything) and when don
Hi
I have a csv file like this
V0,V1,V2,V3
4,1,1,1
6,4,5,2
2,3,6,7
And I want to search two rows for a match and find the column. For
example, I want to search row[0] for 1 and row[1] for 5. The corresponding
column is V2 (which is the third column). Then I
on row values
Il giorno sabato 8 gennaio 2022 alle 02:21:40 UTC+1 dn ha scritto:
> Salaam Mahmood,
> On 08/01/2022 12.07, Mahmood Naderan via Python-list wrote:
> > I have a csv file like this
> > V0,V1,V2,V3
> > 4,1,1,1
> > 6,4,5,2
> > 2,3,6,7
> >
>
Is this thread even close to being on track?
It is not really relevant to argue yet on whether to use EXCEL directly or a
data.base. Many ways can be used to solve a problem and if the EXCEL sheet will
never be updated manually or by some other program, it is sort of moot as you
can ONE TIME tra
I am not replying to anything below so I have removed it.
So I need to remind people of the topic and how it has wandered.
Someone has data in a not particularly great format in an EXCEL spreadsheet.
They want to somehow use an external language like Python to manipulate the
contents from outsid
On 2022-01-15, Bob Griffin wrote:
>I am running this program and keep getting this error. Is this normal?
>
>Invalid syntax. Perhaps you forgot a comma?
>
>Also the t in tags is highlighted.
>
>I even tried different versions of Python also.
>
>Python 3.10.1 (tags/v3.10.1:2cd
Hi,
I use the following line to write some information to a CSV file which is comma
delimited.
f = open(output_file, 'w', newline='')
wr = csv.writer(f)
...
f.write(str(n) + "," + str(key) + "\n" )
Problem is that key is a string which may contain ',' and this causes the final
CSV file to have
To: [email protected]
Sent: Sat, Jan 15, 2022 3:05 pm
Subject: Re: What to write or search on github to get the code for what is
written below:
On 1/13/22 16:08, Avi Gross via Python-list wrote:
>
> I am not replying to anything below so I have removed it.
> Instead, someone sug
Right. I was also able to put all columns in a string and then use writerow().
Thanks.
Regards,
Mahmood
On Saturday, January 15, 2022, 10:33:08 PM GMT+1, alister via Python-list
wrote:
On Sat, 15 Jan 2022 20:56:22 + (UTC), Mahmood Naderan wrote:
> Hi,
> I use the fol
st a thought. If you like your way, fine, I see another reply suggesting how
to hide the commas but that can be a problem if humans read and edit the
results in the external file and do not follow through.
-Original Message-
From: Mahmood Naderan via Python-list
To: DL Neil via Python-
I can appreciate people under time pressure wanting the job DONE first and
maybe learning more after. So, yes, it makes perfect sense to delegate the task
to others with expertise or ask for advice.
This forum may mean many things to many people but for me, it is a place to
offer guidance and s
Good day,
I am experiencing issues trying to download Python. I would please need some
assistance to help download the progam to my laptop.
Kind regards
Renda
--
https://mail.python.org/mailman/listinfo/python-list
I do not manage any python lists or have any say in how they run so I have no
idea why I am being asked by name below, as Dennis pointed out.
So I won't reply on whatever I am being asked, but want to point out that many
forums may be asked questions and some people on the forum will not respond
I am writing a C extension module for an AVL tree, and I am trying to
ensure reference counting is done correctly. I was having a problem with
the reference counting so I worked up this little POC of the problem,
and I hope someone can explain this.
Extension function :
static PyObject *_N
On 19/01/2022 11:09, Chris Angelico wrote:
On Wed, Jan 19, 2022 at 10:00 PM Tony Flury via Python-list
wrote:
Extension function :
static PyObject *_Node_test_ref_count(PyObject *self)
{
printf("\nIncrementing ref count for self - just for the hell
of
Hi guys,
I've written some CPython extension modules in the past without problems. Now
after moving to a new Archlinux box with Python3.10 installed, I can't build
them any more. Or rather, I can build them but not use them due to "undefined
symbols" during linking. Here's ldd's output when used o
I keep wondering about the questions asked by NArshad here. His message can be
read below mine, for context.
This is a place focused on using the Python language. The web page being in
HTML is beyond irrelevant and in particular, web pages generally are in HTML
even if only as a way to call oth
Dan Stromberg wrote:
> Perhaps try:
> https://stromberg.dnsalias.org/svn/find-sym/trunk
>
> It tries to find symbols in C libraries.
>
> In this case, I believe you'll find it in -lpythonx.ym
Thanks! Found out that ldd produces many errors also with working python
libraries. Turns out I tried to r
Definitely it sounds like you may use both. Quite a bit of what people do using
DataFrame objects includes working on copies of individual columns, which often
are numpy Series or the like and in the other direction, can be used to create
or amend a pandas DataFrame. Plus, many operations used t
On 20/01/2022 23:12, Chris Angelico wrote:
On Fri, 21 Jan 2022 at 10:10, Greg Ewing wrote:
On 20/01/22 12:09 am, Chris Angelico wrote:
At this point, the refcount has indeed been increased.
return self;
}
And then you say "my return value is this object".
So you're incre
On 25/01/2022 22:28, Barry wrote:
On 25 Jan 2022, at 14:50, Tony Flury via Python-list
wrote:
On 20/01/2022 23:12, Chris Angelico wrote:
On Fri, 21 Jan 2022 at 10:10, Greg Ewing wrote:
On 20/01/22 12:09 am, Chris Angelico wrote:
At this point, the refcount has indeed been increased
On 26/01/2022 01:29, MRAB wrote:
On 2022-01-25 23:50, Tony Flury via Python-list wrote:
On 25/01/2022 22:28, Barry wrote:
On 25 Jan 2022, at 14:50, Tony Flury via
Python-list wrote:
On 20/01/2022 23:12, Chris Angelico wrote:
On Fri, 21 Jan 2022 at 10:10, Greg
Ewing wrote:
On 20/01
On 26/01/2022 08:20, Chris Angelico wrote:
On Wed, 26 Jan 2022 at 19:04, Tony Flury via Python-list
wrote:
So according to that I should increment twice if and only if the calling
code is using the result - which you can't tell in the C code - which is
very odd behaviour.
No, the r
On 26/01/2022 22:41, Barry wrote:
Run python and your code under a debugger and check the ref count of
the object as you step through the code.
Don’t just step through your code but also step through the C python code.
That will allow you to see how this works at a low level.
Setting a watc
On 03/01/2022 12:45, Joao Marques wrote:
Good morning: I have a very simple question: I want to start writing
programs in Python so I went to the Microsoft Store and installed
Python3.9. No problem so far. I would prefer to have a gui interface, an
interface that I can use file-->Open and File-
I am using multiprocesssing.shared_memory to pass data between NASM and Python.
The shared memory is created in NASM before Python is called. Python connects
to the shm: shm_00 =
shared_memory.SharedMemory(name='shm_object_00',create=False).
I have used shared memory at other points in thi
ig endian.
However, if anyone on this list knows how to pass data from a non-Python
language to Python in multiprocessing.shared_memory please let me (and the
list) know.
Thanks.
Feb 1, 2022, 14:20 by [email protected]:
>
>
>> On 1 Feb 2022, at 20:26, Jen Kris via Pyth
I applaud trying to find the right solution but wonder if a more trivial
solution is even being considered. It ignores big and little endians and just
converts your data into another form and back.
If all you want to do is send an integer that fit in 32 bits or 64 bits, why
not convert it to a
It's not clear to me from the struct module whether it can actually auto-detect
endianness. I think it must be specified, just as I had to do with
int.from_bytes(). In my case endianness was dictated by how the four bytes
were populated, starting with the zero bytes on the left.
Feb 1, 202
An ASCII string will not work. If you convert 32894 to an ascii string you
will have five bytes, but you need four. In my original post I showed the C
program I used to convert any 32-bit number to 4 bytes.
Feb 2, 2022, 10:16 by [email protected]:
> I applaud trying to find the right
I need (sometimes) to repeatedly execute a function. For this I wrote
the below class. What do you think about it?
from threading import Timer
class repeated_timer(object):
def __init__(self, fn, interval, start = False):
if not callable(fn):
raise Ty
Chris Angelico writes:
> On Thu, 3 Feb 2022 at 09:33, Barry wrote:
> (Side point: The OP's code is quite inefficient, as it creates a new
> thread for each reiteration, but there's nothing wrong with that if
> you're looking for something simple.)
It is just something I wrote fast. How could I
Cecil Westerhof writes:
>> (regardless of your OS). The same could be done with this timer; an
>> __exit__ method would make a lot of sense here, and would allow the
>> timer to be used in a with block to govern its execution. (It also
>> isn't really necessary, but if you want a good Pythonic wa
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