Archive for the ‘Python’ Category
Posted by jpluimers on 2025/10/14
I forgot how I bumped into this, but a while ago I found this interesting 2023 post: [Wayback/Archive] It’s Time For A Change: datetime.utcnow() Is Now Deprecated – miguelgrinberg.com explaining naive (without time zone) and aware (with time zone) date time objects.
It reminded me of Delphi, where NowUTC – as Delphi does have neither naive or aware date time objects – returns a floating point value (yes, it has a separate TDateTime type, but it represents the number of days that have passed since December 30, 1899 which in face stems from the Windows OLE Automation era* (OLE Automation is a subset of COM), see [Wayback/Archive] DateTime.ToOADate Method (System) | Microsoft Learn.
That method is mentioned in [Wayback/Archive] Why You Should Use NowUTC Instead of Now in Delphi: A Quick Guide – YouTube and Delphi deserves a way better infrastructure of date and time handling.
So this post is also a reminder to myself: figure out if there is an object oriented DateTime library for Delphi yet, and if not see if there is interest to create one similar to [Wayback/Archive] Noda Time | Date and time API for .NET by Jon Skeet.
Delphi references
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Posted in .NET, .NET Framework, .NET Standard, C#, Conference Topics, Conferences, Delphi, Development, Event, Jon Skeet, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2025/09/25
Perl isn’t my strength, so I was glad to find the below links that inspired me to add this bash function to my profile decoding Quote-Printable email data (for instance used by sendmail and postfix to store SMTP message files):
# https://superuser.com/questions/1452249/fix-revert-wrong-encoding-of-file
function sendmail-decode-quoted-printable-from-stdin() {
perl -0777 -ne 'use MIME::QuotedPrint; print decode_qp($_)'
}
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Posted in *nix, *nix-tools, bash, bash, Development, Perl, Power User, Python, Scripting, sendmail, Software Development | Leave a Comment »
Posted by jpluimers on 2025/09/10
[Wayback/Archive] What Every Programmer Should Know about How CPUs Work • Matt Godbolt • GOTO 2024 – YouTube
Main takeaways for me:
- CPU pipelines have grown a lot longer than I was aware off
- there are many more internal registers than I was anticipating
- clever ways to convert if statements to non-jumps
--jeroen
Posted in .NET, Assembly Language, C, C#, C++, Delphi, Development, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2025/07/31
For my link archive [Wayback/Archive] Out of Control. An essay on paradigms, refactoring… | by Kevlin Henney | Dec, 2020 | Medium.
Neither because Kevlin describes how to refactor a basic algorithm to convert Roman numerals into Hindu-Arabic numerals (in part by using the fact that an if statement can be considered a bounded case of a while loop), nor because he splits the resulting algorithm in coded data and coded statements, or because he mentions the [Wayback/Archive] Gilded Rose Kata but because well, you should just read it in full.
Remember though: Read the rest of this entry »
Posted in Configuration Management, Development, DevOps, Power User, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2025/07/24
Very cool web site that I only discovered last year, with the clever name: [Wayback/Archive] Wakamai Fondue, the tool that answers the question “what can my font do?”
Drop a font!
Fonts aren’t uploaded,
they stay on your computer
Back then I used it to investigate some properties of SMuFL (Standard Music Font Layout) fonts as sometimes editing a PDF is easier than manually entering/transcribing it in MuseScore.
Of course you can use local font tools, but this is far easier for occasional use.
The beta can do even more at the risk of bumping into bugs: [Wayback/Archive] Wakamai Fondue, the tool that answers the question “what can my font do?”
Note the colour matching of the text around the circle with the fondue background image.
Oh: it is open source too, written mainly in JavaScript, CSS and a tiny bits of HTML and Python, based on Vue.js and npm, and available as parts in the repositories of [Wayback/Archive] Wakamai Fondue · GitHub:
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Posted in CSS, Development, Font, HTML, JavaScript/ECMAScript, npm, Python, Scripting, Software Development, Vue.js, Web Development | Leave a Comment »
Posted by jpluimers on 2025/06/11
Didn’t know nx had a scriptable RPN command-line calculator dc (for Desk Calculator) which does not seem to need white space characters in the input stream or input file.
It likely is a source for command-injection attacks given the question [Wayback/Archive] unix – How come is this command returning “GET A LIFE!”? – Stack Overflow, so I did a bit of digging and found this great platform:
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Posted in *nix, *nix-tools, Development, Power User, PowerShell, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2025/05/29
Now that Python 2 has been dead for long enough (has it been unsupported for 5 years? yes it has: [Wayback/Archive] Status of Python Versions), it was finally time to change my alias for running a local web-server to serve files from a directory (:
So, from [Wayback/Archive] What is the Python 3 equivalent of “python -m SimpleHTTPServer” – Stack Overflow (thanks [Wayback/Archive] ryanbraganza, [Wayback/Archive] k.avinash and [Wayback/Archive] Petr Viktorin):
python -m http.server 8000, it will start the server on port 8000
Docs with the migration hints: [Wayback/Archive] 20.19. SimpleHTTPServer — Simple HTTP request handler — Python 2.7.18 documentation
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Posted in *nix, *nix-tools, bash, Batch-Files, Development, Power User, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2025/05/01
Back when I observed the Google Search sei parameter which I hadn’t seen before yet, I bumped into [Wayback/Archive] GitHub – randomaccess3/googleURLParser: parser for Google search strings
It covers a truckload of parameters, including the sei one, which isn’t as new as I thought, as it was at least 2017 old: [Wayback/Archive] [Neat URL] Yet another Google parameter… · Issue #25 · Smile4ever/firefoxaddons · GitHub
Links referred from the parser tool for further reading:
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Posted in Development, Google, GoogleImageSearch, GoogleSearch, Perl, Power User, Python, Scripting, Software Development | Tagged: 25 | Leave a Comment »
Posted by jpluimers on 2025/03/06
Two sites that can help you out getting weather info on the console:
wttr.in
wttr.in is developed by [Wayback/Archive] Igor Chubin (@igor_chubin) / X and looks at the request header to figure out what kind of output it sends.
It supports various output formats, so on my TODO list is to see how they do their mapping: always an opportunity to learn (it’s based on Python and Go so I am curious what libraries they use as well).
From the documentation:
wttr.in currently supports five output formats:
- ANSI for the terminal;
- Plain-text for the terminal and scripts;
- HTML for the browser;
- PNG for the graphical viewers;
- JSON for scripts and APIs;
- Prometheus metrics for scripts and APIs.
The ANSI and HTML formats are selected based on the User-Agent string.
There are more parameters in the documentation on the main page of the repository and through this command:
curl wttr.in/:help
The idea is derived from [Wayback/Archive] GitHub – schachmat/wego: weather app for the terminal.
Oh: Igor has more repositories at [Wayback/Archive] chubin (Igor Chubin) · GitHub (including [Wayback/Archive] GitHub – chubin/cheat.sh: the only cheat sheet you need which is hosted at [Wayback/Archive] cheat.sh; I thought I had blogged about that before, but found it only in a draft note mentioning that I got it via [WaybackSave/Archive] Nicolas Krassas on X: “The only cheat sheet you need cheat.sh“)
7timer
A 7 timer JSON usage example is at [Wayback/Archive] Get Weather from 7Timer! · GitHub
It has documentation at
Output formats can be chosen from HTML, PNG, XML and JSON.
Via
[Wayback/Archive] Hacker Public Radio – hpr4266 :: What’s the weather?
Lee writes a script to check what the weather is like ~ The Technology Community Podcast
HPR is a great podcast series!
--jeroen
Posted in *nix, *nix-tools, ash/dash, bash, bash, Development, Go (golang), JavaScript/ECMAScript, JSON, Power User, Python, Scripting, Software Development, Web Development, XML/XSD | Leave a Comment »
The Wiert Corner - irregular stream of stuff 