Dilawar Singh dilawar

Using websockets to easily build GUIs for Python programs

I recently built a small agent-based model using Python and wanted to visualize the model in action. But as much as Python is an ideal tool for scientific computation (numpy, scipy, matplotlib), it's not as good for dynamic visualization (pygame?).

You know what's a very mature and flexible tool for drawing graphics? The DOM! For simple graphics you can use HTML and CSS; for more complicated stuff you can use Canvas, SVG, or WebGL. There are countless frameworks, libraries, and tutorials to help you draw exactly what you need. In my case, this was the animation I wanted:

(Each row represents a "worker" in my model, and each rectangle represents a "task.")

An Illustration of a Nix Python Package

Every Python package (which is a collection of modules associated with version metadata) needs to have a setup.py.

So first create a relevant setup.py, refer to my article here: https://gist.github.com/CMCDragonkai/f0285cdc162758aaadb957c52f693819 for more information.

Remember that setup.py is meant to store version compatible ranges of

Summary of book "Clean Architecture" by Robert C. Martin

Uncle Bob, the well known author of Clean Code, is coming back to us with a new book called Clean Architecture which wants to take a larger view on how to create software.

Even if Clean Code is one of the major book around OOP and code design (mainly by presenting the SOLID principles), I was not totally impressed by the book.

Clean Architecture leaves me with the same feeling, even if it's pushing the development world to do better, has some good stories and present robust principles to build software.

The book is build around 34 chapters organised in chapters.

	# 2024-04-17: Stole changese from @Timmo on stackoverflow to get this working with Windows Apps

	import winreg

	class WebcamDetect:
	REG_KEY = winreg.HKEY_CURRENT_USER
	WEBCAM_REG_SUBKEY = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\CapabilityAccessManager\\ConsentStore\\webcam\\"
	WEBCAM_TIMESTAMP_VALUE_NAME = "LastUsedTimeStop"

	def __init__(self):

	zypper-download
	===============

	Downloads packages using any amount of available openSUSE mirrors.

	Installation
	------------

	Copy both files to the following locations:

	#!/usr/bin/env bash

	### Bash Environment Setup
	# http://redsymbol.net/articles/unofficial-bash-strict-mode/
	# https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html
	# set -o xtrace
	set -o errexit
	set -o errtrace
	set -o nounset
	set -o pipefail

	#!/usr/bin/env python2

	"""
	This script will print package urls which need to be downloaded for 'distrubution upgrade'
	Printed urls can be used for downloading packages in parallel.
	For eg: we can use GNU parallel commanline tool along with wget/curl for parallel downloading

	python2 zypper_dup_print_urls.py \| parallel --tmuxpane -j4 --colsep ' ' mkdir -p '{1}/{2}' \; cd '{1}/{2}' \; wget -c {3}
	will download packages with 4 simultaneous downloads
	"""

	sudo yum install epel-release
	sudo yum install gcc-c++ ncurses-devel ruby ruby-devel lua lua-devel luajit luajit-devel ctags python python-devel python3 python3-devel tcl-devel perl perl-devel perl-ExtUtils-ParseXS perl-ExtUtils-XSpp perl-ExtUtils-CBuilder perl-ExtUtils-Embed cscope gtk3-devel libSM-devel libXt-devel libXpm-devel libappstream-glib libacl-devel gpm-devel

	yum list installed \| grep -i vim
	# sudo yum erase vim-common.x86_64 vim-enhanced.x86_64 vim-filesystem.x86_64 vim-X11

	# sudo depends on vim-minimal
	sudo rpm -e --nodeps vim-minimal

	sudo ln -s /usr/bin/python3.6 python3

	import click
	import hashlib
	import requests

	from pathlib import Path
	from tqdm import tqdm


	CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])

	-- don't do anything unless we target latex
	if FORMAT ~= "latex" then
	return {}
	end

	local List = require'pandoc.List'

	local function latex(str)
	return List:new{pandoc.RawInline('latex', str)}
	end