The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Scripting’ Category

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Common SMTP message size limits

Posted by jpluimers on 2020/04/08

After a 2018 discussion with a “zorgkantoor” (Dutch for office that arranges for special long term health care needs, successor of AWBZ) about their very low (10 megabyte) SMTP message size limit – even though they expect scanned PDF documents.

Their web-care team posed this limit as normal, so I made a list of limits in their peer group, common world-wide and well-ranked Dutch internet providers.

My plan is to check the progression of these limits over time.

Note these are the bruto message sizes including encoded attachments. Since encoding in [WayBack] MIME Base64 – Wikipedia has a overhead of at least 37% (encoded size is at least 1.37 the original size), the unencoded maximum size is less than 73% of what is listed below.

References:

2018

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Posted in base64, Communications Development, Development, eMail, Encoding, Internet protocol suite, MIME, Power User, Python, Scripting, SMTP, SocialMedia, Software Development, TCP | Leave a Comment »

In SQL Server use `SET NOCOUNT ON` so tools taking the last modified record count won’t be confused by your trigger.

Posted by jpluimers on 2020/04/07

Interesting read: Time eating bug of the day… – Fabian S. Biehn – Google+.

TL;DR: in SQL Server use SET NOCOUNT ON so tools taking the last modified record count won’t be confused by your trigger.

Source: [WayBack] Time eating bug of the day: I used a TADOQuery.ExecSQL (on Berlin) for an Up…

Related: [WayBack] sql server – ADODB affected rows return trigger’s affected rows – Stack Overflow

–jeroen

Posted in Database Development, Delphi, Development, Office VBA, Scripting, Software Development, SQL, SQL Server | Leave a Comment »

For my link archive: Python – Handling command-line arguments

Posted by jpluimers on 2020/04/02

The article is dense but goes way deeper than straightforward sys.argv[1:] handling: [WayBack] 10.6. Handling command-line arguments.

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Forde’s Tenth Rule, or, “How I Learned to Stop Worrying and ❤ the State Machine”

Posted by jpluimers on 2020/04/01

It is important to look beyond your own comfort zone to see what other languages can support: [WayBack] Forde’s Tenth Rule, or, “How I Learned to Stop Worrying and ❤ the State Machine”.

The article is about implementing finite state machines in JavaScript with as little usage of string literals as possible.

Via: [WayBack] How I Learned to Stop Worrying and Love the State Machine – Adrian Marius Popa – Google+

–jeroen

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

Printing all DNS records using DNSPython in Python 3 · GitHub

Posted by jpluimers on 2020/03/31

Cool example, which requires dnspython and might need an update of the DNS record type list (maybe dnspython has that list built in?):

[WayBack] Printing all DNS records using DNSPython in Python 3 · GitHub

–jeroen

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Posted in Development, Python, Scripting, Software Development | Leave a Comment »

GitHub – alexmojaki/birdseye: Quick, convenient, expression-centric, graphical Python debugger using the AST

Posted by jpluimers on 2020/03/26

This is soooo nice! [WayBack] GitHub – alexmojaki/birdseye: Quick, convenient, expression-centric, graphical Python debugger using the AST

It runs on localhost:7777

Via: [WayBack] Birdseye ist eine interessante Lösung, um detailliert nachzuvollziehen, was beim Aufruf von Python-Funktionen und der Abarbeitung von Schleifen geschieh… – Martin Vogel – Google+

–jeroen

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Posted in Development, Python, Scripting, Software Development | Leave a Comment »

python – How do I install pip on macOS or OS X? – Stack Overflow

Posted by jpluimers on 2020/03/25

On Mac OS X with stock Python:

All you need to do is

sudo easy_install pip

After this, you might want to upgrade pip:

sudo pip install --upgrade pip

Source: [WayBack] python – How do I install pip on macOS or OS X? – Stack Overflow

You could go the homebrew way, but that means your system will have two Python installations usually causing a nightmare of path dependency orders. In addition, homebrew puts you on the wrong foot, so:

DO NOT DO THIS!

# brew install pip
Error: No available formula with the name "pip" 
Homebrew provides pip via: `brew install python`. However you will then
have two Pythons installed on your Mac, so alternatively you can install
pip via the instructions at:
  https://pip.readthedocs.io/en/stable/installing/

–jeroen

Posted in Apple, Development, Mac OS X / OS X / MacOS, macOS 10.12 Sierra, macOS 10.13 High Sierra, Power User, Python, Scripting, Software Development | Leave a Comment »

bash – How to add a progress bar to a shell script? – Stack Overflow

Posted by jpluimers on 2020/03/17

From [WayBack] bash – How to add a progress bar to a shell script? – Stack Overflow (thanks Mitch Haile!):

You can implement this by overwriting a line. Use \r to go back to the beginning of the line without writing \n to the terminal.

Write \n when you’re done to advance the line.

Use echo -ne to:

  1. not print \n and
  2. to recognize escape sequences like \r.

Here’s a demo:

echo -ne '#####                     (33%)\r'
sleep 1
echo -ne '#############             (66%)\r'
sleep 1
echo -ne '#######################   (100%)\r'
echo -ne '\n'

–jeroen

Posted in *nix, *nix-tools, bash, bash, Development, Power User, Scripting, Software Development | Leave a Comment »

Practical Deep Learning for Coders 2018 · fast.ai

Posted by jpluimers on 2020/03/11

I’ve read this twice and need to re-read this a few times, so from my reading list then need to follow the course one day: Practical Deep Learning for Coders 2018 · fast.ai [WayBack].

… deep learning course based on Pytorch (and a new library we have built, called fastai), with the goal of allowing more students to be able to achieve world-class results with deep learning. … this course, Practical Deep Learning for Coders 2018 [WayBack], … The only prerequisites are a year of coding experience, and high school math (math required for understanding the material is introduced as required during the course).

Related: [WayBack] The Matrix Calculus You Need For Deep Learning – Terence Parr and Jeremy Howard

Via:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

GitHub – mgedmin/check-manifest: Tool to check the completeness of MANIFEST.in for Python packages

Posted by jpluimers on 2020/02/27

I will need thi sone day: [WayBack] GitHub – mgedmin/check-manifest: Tool to check the completeness of MANIFEST.in for Python packages

Are you a Python developer? Have you uploaded packages to the Python Package Index? Have you accidentally uploaded broken packages with some files missing? If so, check-manifest is for you.

Via: [WayBack] check-manifest: a tool to check the completeness of MANIFEST.in for Python packages  – ThisIsWhyICode – Google+

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

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