Re: [python-uk] PermissionError: [Errno 13] Permission denied: 'Abc.xlsx'

[SW]

Responding to list in case this helps someone else as well:

When you open a file in Window ("when the excel is already open 
following error") there will generally (or maybe always, I don't recall 
precisely) be an exclusive lock taken on the file.
This means that while another application has a file open you'll get 
this sort of error when you try to access the file in any way.


Therefore, the solution is to make sure not to have the file open in 
another application while trying to run your script on it.


For more information you'll want to search for things like "Windows file 
locking".


Thanks,
S

On 09/02/2022 09:42, Arshad Noman wrote:
When I enter data using Tkinter form in an Excel file when the excel 
file is closed there is no error but when I enter data using Tkinter 
form when the excel is already open following error comes:




Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\Dani Brothers\Anaconda3\lib\tkinter\__init__.py", line 
1705, in __call__

return self.func(*args)
File "D:/Python/Book Bank/New folder/PyCharm/Final/Excel.py", line 61, 
in SaveBook

workbook.save(filename="BookBank.xlsx")
File "C:\Users\Dani 
Brothers\Anaconda3\lib\site-packages\openpyxl\workbook\workbook.py", 
line 392, in save

save_workbook(self, filename)
File "C:\Users\Dani 
Brothers\Anaconda3\lib\site-packages\openpyxl\writer\excel.py", line 
291, in save_workbook

archive = ZipFile(filename, 'w', ZIP_DEFLATED, allowZip64=True)
File "C:\Users\Dani Brothers\Anaconda3\lib\zipfile.py", line 1207, in 
__init__

self.fp = io.open(file, filemode)
PermissionError: [Errno 13] Permission denied: 'Abc.xlsx'



What to do to correct this error? I have already searched on google 
search many times but no solution was found.


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Re: [python-uk] C is it faster than numpy

[SW]

I think it uses fortran (or used to?) but yes, still close to the metal.

Thanks,
S

On 25/02/2022 10:41, Giorgio Zoppi wrote:

Well,
numpy is written in C :) Maybe your C is not the numpy equivalent?
Best Regards,
Giorgio

Il giorno ven 25 feb 2022 alle ore 09:03 BELAHCENE Abdelkader 
 ha scritto:


Hi,
a lot of people think that C (or C++) is faster than python, yes I
agree, but I think that's not the case with numpy, I believe numpy
is faster than C, at least in some cases.
*Is there another explanation ?
Or where can find  a doc speaking  about the subject?
*Thanks a lot
Regards
Numpy implements vectorization for arrays, or I'm wrong. Anyway
here is an example Let's look at the following case:
Here is the result on my laptop i3:

Labs$ *python3 tempsExe.py  5*
  sum with Python: 1250025000 and NumPy 1250025000
      time used Python Sum: *37.28 sec *
      time used  Numpy Sum: *1.85 sec*

Labs$ *./tt    5 *
*  CPU  time :7.521730
    The value : 1250025000
*

This is the Python3 program :

import timeit as it
import numpy as np
import sys
try :
n=eval(sys.argv[1])
except:
print ("needs integer as argument") ; exit()

a=range(1,n+1)
b=np.array(a)
def func1():     return sum(a)
def func2(): return np.sum(b)

print(f"sum with Python: {func1()} and NumPy {func2()} ")
tm1=it.timeit(stmt=func1, number=n)
print(f"time used Python Sum: {round(tm1,2)} sec")
tm2=it.timeit(stmt=func2, number=n)
print(f"time used  Numpy Sum: {round(tm2,2)} sec")

and Here the C program:
#include 
#include 
#include 
long func1(int n){
 long  r=0;
    for (int  i=1; i<= n;i++) r+= i;
 return r;
}
int main(int argc, char* argv[]){
 clock_t c0, c1;
    long v,count; int n;
   if ( argc < 2) {
  printf("Please give an argument");
 return -1;
  }
    n=atoi(argv[1]);
    c0 = clock();
*for (int j=0;j < n;j++) v=func1(n);*
 c1 = clock();
 printf ("\tCPU  time :%.2f sec", (float)(c1 -
c0)/CLOCKS_PER_SEC);
 printf("\n\tThe value : %ld\n",  v);
}
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--
Life is a chess game - Anonymous.

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[python-uk] Pycon UK 2022 CFP is open

[SW]

Good morning everyone,
In case anyone is interested, Pycon UK 2022 CFP is open: 
https://2022.pyconuk.org/call-for-proposals/


Anyone who wants to submit a talk feel free to do so- you don't have to 
be an absolute master of python to have something interesting to say.


Tickets are also on sale on the site, though for those who have been 
before please note that the conference is running slightly smaller than 
usual to try to allow some reduced risk for the reasons you probably 
will have noticed over the last couple of years.


Thanks,
S
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Re: [python-uk] Pen Testing for SMEs?

[SW]

I can also add https://istormsolutions.co.uk/ - I have a friend who 
works there, though I've not used their services myself.


Thanks,
S

On 03/07/2023 15:03, Gautier Hayoun wrote:

Hi William,

I have dealt with Callum at Sencode (https://sencode.co.uk/) recently. 
They are a small company based in the UK, and I was perfectly 
satisfied when their pen test of a Django web application.


Best,

Gautier

On 03/07/2023 13:55, William Mayor wrote:

Hi!

This isn’t exactly on topic, but I’m running out of leads on this 
one. Any help is appreciated :)


I’m looking for a penetration/security testing company that can help 
me with a product that we’re building. It’s an API (written using 
FastAPI, so there is a python link in here :) ), with web and native 
app front ends.


I’d like to have some kind of certified test conducted, to find all 
the security edge cases that I’ve undoubtably missed.


We’re a small company (a social enterprise), so our budget isn’t great.

So my question is, does anyone have any recommendations for a pen 
testing company that could help?


Thank you!


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Re: [python-uk] London Dojo next Tuesday 19th

[SW]

Seconded- one of my longest running and most enjoyed diversions while I 
lived in London, and well worth going for anyone on the fence- 
experienced or otherwise!


Thanks,
S

On 13/03/2024 20:55, a.gra...@gmail.com wrote:
Replying shamelessly off topic just to say that after 5 years I still 
miss you folks 🥹


Have a great time!

Andrea Grandi - Software Engineer
Website: https://www.andreagrandi.it
GitHub: https://github.com/andreagrandi


Il giorno mer 13 mar 2024 alle 16:00 Tom Viner  ha scritto:

Hi folks,

[I'm so happy people still read the ol' python-uk mailing list! :-D ]

The London Code Dojo is back, at Octopus Energy
 next Tuesday 19th.

We'll have pizza, drinks and some fun group coding. All abilities
welcome.

There'll also be the prize draw for a random O'Reilly Python book
as usual.

*6:30pm Tuesday 19th March 2024*

Get your tickets while they're hot:
https://www.meetup.com/london-python-code-dojo/events/299769632/

If you need any more information, contact the team via Twitter:
@ldnpydojo  or t...@ldnpydojo.org.uk

*We're always looking for venues to host the Dojo. Do get in touch.*

Look forward to seeing you next Tuesday!

Tom
@tomviner 
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Re: [python-uk] Python in education

[SW]

It has certainly started off well, but now I need to get back to doing 
the stuff that gets me paid for the afternoon so I'll have to read more 
later.


Perhaps the people at O'Reilly have decided that they'll be out of 
business in 10 years? If not, their higher ups should really understand 
that trying to promote better technical education in schools will 
increase the attractiveness of their offerings over time.


There I go bringing this 'logic' thing in again. I'll stop!

S

Date: Thu, 16 Apr 2015 16:09:02 +0100
From: "Nicholas H.Tollervey" 
To: python-uk@python.org
Subject: [python-uk] Python in Education - now available
Message-ID: <552fd08e.70...@ntoll.org>
Content-Type: text/plain; charset="utf-8"

Hi Folks,

Apologies for the shameless plug, but I just realised I've not mentioned
this to anyone in the UK!

My FREE short report for O'Reilly on Python in Education is available here:

http://www.oreilly.com/programming/free/python-in-education.csp

If lots of people download it then O'Reilly might finally get the
message that tech-education is an important sub-category (my editor is
trying to push this but seems to hit blank faces from higher-ups,
apparently number of unique downloads matters). ;-)

Many many thanks to UK based Pythonistas: Carrie Anne Philbin, Naomi
Ceder and Tim Golden for their proof reading of an early version.

All feedback most welcome!

Best wishes,

Nicholas.




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[python-uk] London Python Project Nights

[SW]

Got a project you keep meaning to work on? Love the python code dojo 
atmosphere? Then join us at http://london-python-project-nights.github.io/


To hear about the first session (anticipated to be on 21st May), you can 
join the google group linked on the above page or directly at: 
https://groups.google.com/forum/#!contactowner/london-python-project-nights 



What is London Python Project Nights?
Somewhere for people comfortable with python to work on projects in a 
dojo-like atmosphere (socially speaking- hopefully with better code!).
Meet up once a month to work on your project in a relaxed environment 
and perhaps share the progress with and get advice from the group.
Now you can make excuses for not working on that cool idea for most of 
the month but still work on it at least once a month! Up to 15 people 
(to start with).


If you're interested in sponsoring, please contact us at ldnpy...@gmail.com.

Thanks,
Sandy
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Re: [python-uk] Anyone needs a Python/Django backend developer in London?

[SW]

I'm not sure anyone should want to hire a ninja unless they like 
deceptive and potentially fatal code.


Slightly more on-topic, I can't hire him (I'm freelancing at the moment) 
but I've made inquiries.


S

On 26/05/15 15:33, Nicholas H.Tollervey wrote:

What Tim and Peter say is very much the case. Clueless job agents
looking for Ninjas shouldn't look here, Andrea most definitely should!

On that note, quick, hire him! He's awesome!

;-)

N.




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Re: [python-uk] Nicholas Tollervey winner of PSF Community Service Award

[SW]

Very well deserved!

S

On 24/06/15 14:50, Nicholas H.Tollervey wrote:

Hi Folks,

Many thanks..! I'm feeling rather chuffed and a little embarrassed.

I'm going to make a cup of tea in celebration.

Will raise a toast and dunk a biscuit to everyone who has and continues
to help with Python in education in the UK.

You all deserve an award!

N.

On 24/06/15 14:31, Naomi Ceder wrote:

As a member of the PSF board of directors it gives me great pleasure to
report that our own Nicholas Tollervey has been awarded the PSF's
Community Service Award for Q2, 2015 in recognition of his work in
promoting Python in education in the UK.

Please join me in congratulating Nicholas for this recognition of all
that he has been doing for our community.
  
Look for a more formal announcement on the PSF blog in the coming days.


(Getting to make this announcement is definitely my favourite thing
about being a director so far :-) )

Cheers,
Naomi Ceder
--
Naomi Ceder
https://plus.google.com/u/0/111396744045017339164/about


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Re: [python-uk] July London Python Dojo tickets available

[SW]

Team 1's effort: https://github.com/geokala/dojobattleships

S

On 03/07/15 10:00, Tom Viner wrote:

Hey Andrea,

(hope you meant to reply all!)

no worries, just make sure you get it all complete by the next dojo... 
only kidding :-).


Just to add, if teams do want to share your code you can PR onto here: 
https://github.com/ldnpydojo/Battleships-AI I've linked to team2's "3 
AIs and a simulator to test and rank them".


Cheers,
Tom

On 3 July 2015 at 08:02, a.gra...@gmail.com 
 > wrote:


Hello!

I would like to apologize with the rest of my team (number 5) because
yesterday I was so tired that I simply couldn't write a single line
nor have the energy to follow the work :/
I hope to be in a better shape for next time!

Cheers.


On 26 June 2015 at 10:58, Daniel Pope mailto:lord.ma...@gmail.com>> wrote:
> The next London Python Dojo will be at 6:30pm on Thursday 2nd
July at the
> offices of Mind Candy in Shoreditch.
>
> Join us for a night of beer, pizza and Python-ing, in the company of
> friends.
>
> For details and to sign up for a free ticket, please visit the
link below:
>
>
https://ldnpydojo.eventwax.com/london-python-code-dojo-season-6-episode-10-2
>
> We have time for a couple of lightning talks if anyone would
like to give
> one; drop me an e-mail off-list if you'd like to volunteer.
>
> Look forward to seeing you there!
>
> Dan
>
>
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--
Andrea Grandi - Software Engineer
Website: http://www.andreagrandi.it
Twitter: https://twitter.com/andreagrandi
GitHub: https://github.com/andreagrandi
PGP: 7238 74F6 886D 5994 323F 1781 8CFB 47AD C384 F0CC
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Re: [python-uk] No activity on #python-unregistered irc channel?

[SW]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

I think that might be some sort of auto-redirect for unregistered users
on some IRC nets (freenode?). Probably need to register the nickname
with nickserv to avoid being bounced to there.

(this is from memory, and my memory is not error-correcting so could be
wrong!)

S

On 08/12/15 13:42, Cory Benfield (Lukasa) wrote:
>
>> On 8 Dec 2015, at 13:40, gvim  wrote:
>>
>> I'm new to Python and recently asked a couple of questions on the
#python-unregistered irc channel. Despite nearly 1200 logged-in users I
didn't get a reply to any of my questions and there also didn't seem to
be any activity. Am I missing something?
>>
>> grim
>
> What’s the #python-unregistered channel? This is the first I’ve heard
of it.
>
>
>
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Re: [python-uk] First dojo of 2016 is next Thursday: Wait list

[SW]

Hi Vida,
When I first started I could just about print 'hello world' in python. I
found the atmosphere to be great and very welcoming to beginners. I've
been going for several years now, so hopefully that's a reasonable
indication of my opinion of the dojo. *smiles*

Thanks,
S

On 04/01/16 15:54, Vidoo wrote:
> Hi all, 
>
> I am very new to the group, and would like to take part in the coding dojo. 
> However, I am a beginner and not much of python coding skills..,
>
> Would it be a place for me? 
>
> Thanks a lot,
> Vida 
>
> Sent from my iPhone
>
>> On 4 Jan 2016, at 15:41, Michael Grazebrook  wrote:
>>
>> Thanks. Signed up.
>>
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Re: [python-uk] First dojo of 2016 is next Thursday: Wait list

[SW]

Good luck!

S

On 04/01/16 16:35, Vida Ghanaei wrote:
> Thanks a lot for your response! Then I take it forward and hope to attend on 
> Thursday, if I get through
> the waiting list... 
>
> Best regards,
> Vida 
>> On 4 Jan 2016, at 16:08, SW  wrote:
>>
>> Hi Vida,
>> When I first started I could just about print 'hello world' in python. I
>> found the atmosphere to be great and very welcoming to beginners. I've
>> been going for several years now, so hopefully that's a reasonable
>> indication of my opinion of the dojo. *smiles*
>>
>> Thanks,
>> S
>>
>> On 04/01/16 15:54, Vidoo wrote:
>>> Hi all, 
>>>
>>> I am very new to the group, and would like to take part in the coding dojo. 
>>> However, I am a beginner and not much of python coding skills..,
>>>
>>> Would it be a place for me? 
>>>
>>> Thanks a lot,
>>> Vida 
>>>
>>> Sent from my iPhone
>>>
>>>> On 4 Jan 2016, at 15:41, Michael Grazebrook  wrote:
>>>>
>>>> Thanks. Signed up.
>>>>
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[python-uk] Build Something! (AKA London Python Project Nights)

[SW]

Good morning all,
The next session of 'Build Something' will be on Wednesday 20th.

If you have an idea you keep meaning to work on then feel free to sign
up, come along, and find an excuse to work on it for an evening!

http://www.meetup.com/London-Python-Project-Nights/

Looking forward to seeing some of you there!

Thanks,
S
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[python-uk] Last night's dojo (fowl play)

[SW]

Good morning,
For those interested in where to obtain Turkey (the daily tasks tracking
tool) from after last night's talk on it: https://github.com/geokala/turkey

Our (group 1's) quiz app (which as some noted might be /loosely/ related
to turkey *cough*) is also available on https://github.com/geokala/quizify
It's actually working now. The lesson is not to keep multiple copies of
the same file in different locations. Also, use absolute imports, and
don't use urllib directly.

Additionally, if anyone was interested in a job working on Cloudify
(open source orchestration tool)- most likely working from home, ping me
a mail off list (happy to answer any questions on what it's like to work
on as well).

Thanks,
S

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[python-uk] Build Something- London, 17th Feb

[SW]

Good morning all,
It's that time again- the next session is Wednesday 17th Feb.

Join us for an evening of progress(?) on open source projects.

http://www.meetup.com/London-Python-Project-Nights/events/228396073/

Hoping to see you there!

Thanks,
S
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[python-uk] Build Something, Wed 20th

[SW]

For those of you who keep meaning to work on a project and are in/around
London next Wednesday (20th), you're welcome to come along to Build
Something!

http://www.meetup.com/London-Python-Project-Nights/events/226695743/

Thanks,
S
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Re: [python-uk] Coding "Bootcamps"

[SW]

Given the 'lives in London' aspect, he may want to keep an eye out for
the next Python Code Dojo, as it's usually very beginner friendly and if
he shows reasonable capacity for logical thought he might find someone
who is looking for a junior level person (no guarantees of course, but
getting contacts is always good).

Thanks,
S

On 18/05/16 14:12, Walter Prins wrote:
> Hi,
>
> Quite a few good responses already, but just to add the suggestion
> that he also have a look at/consider some of the free or low/lower
> cost educational options available, such as Coursera
> , EdX , KhanAcademy
>  or perhaps Pluralsight
> , CodeSchoool
> , TeamTreehouse
>  or CodeAcademy
>  and that he avoid high-cost options
> initially.
>
> Certainly it would allow him to get started with something in the
> meantime and start learning with no or little cash down, even if he
> eventually decides to do some sort of higher cost/formal qualification
> later.  
>
> Also he might want to look at some programming practice/challenge
> sites such as CodeEval , HackerRank
> , CodeWars
> , LeetCode
>  or CodeChef  once
> sufficient progress has been made for him to attempt these.
>
> Best of luck,
>
> Walter
>
> On 18 May 2016 at 10:59, John via python-uk  > wrote:
>
> Hi all,
>
> A philosopher friend of mine wants to transition into working as a
> software developer (paying work in philosophy being a bit rare).
> He lives in London, and is considering signing up for one of the
> Coding "Bootcamps" that various organisations run. I wondered if
> any of you have any recommendations you could make, and indeed
> whether any of these bootcamps teach Python?
>
> Thanks,
>
> John
>
>
>
>
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