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Agent Guidelines for Python Code Quality

This document provides guidelines for maintaining high-quality Python code. These rules MUST be followed by all AI coding agents and contributors.

Your Core Principles

All code you write MUST be fully optimized.

"Fully optimized" includes:

Ubuntu 20.04 on a 15" Retina MacBook Pro (Mid-2014)

These are notes from my efforts to get Ubuntu 20.04 installed on my older MacBook Pro. I'm making this gist public in the hopes that it's helpful to others.

I did a Minimal install, but selected the option to install additional 3rd-party drivers.

Wifi doesn't work during the install (because it requires a 3rd-party driver), so you won't be able to choose to download updates while installing. No big deal, run a software update after the install.

The installer takes about 25 minutes to complete. Post-install, most things work. The only driver I had to manually install was for the FaceTime camera. More on that below.

I set up my linters for use with VS Code, so I only use the linting tools that can be integrated into the Problems tab, but these can be used from the command line. I have attempted to avoid having different tools give duplicate warnings, but this is a work in progress. The VS code settings.json is at https://gist.github.com/jlmelville/74d8fe778b0d89574e82ffe47c1e49ae.

Create a linting-requirements.txt file:

# this also installs pylint and pycodestyle
bandit
prospector[with_pyroma]
flake8
black

Bi-directional Communication over Popen

This gist illustrates how two processes can exchange information via subprocess.Popen.

Goal

Integrate an externally running user interface, potentially written in another language. For example, a GUI written in PyQt5 and Python 3 running inside of Autodesk Maya (Python 2.7, PySide).

Bi-directional Communication over Popen

This gist illustrates how two processes can exchange information via subprocess.Popen.

Goal

Integrate an externally running user interface, potentially written in another language. For example, a GUI written in PyQt5 and Python 3 running inside of Autodesk Maya (Python 2.7, PySide).

	# Simple linux tun/tap device example tunnel over udp
	# create tap device with ip tuntap add device0 tap
	# set ip address on it and run tap-linux on that device and set desitation ip
	# run same on another node, changing dst ip to first node

	import fcntl
	import struct
	import os
	import socket
	import threading

	import board
	import digitalio
	import time

	btn1 = digitalio.DigitalInOut(board.GP20)
	btn1.direction = digitalio.Direction.INPUT
	btn1.pull = digitalio.Pull.UP

	led1 = digitalio.DigitalInOut(board.GP2)
	led2 = digitalio.DigitalInOut(board.GP3)

	from threading import Timer
	from functools import partial

	class Interval(object):

	def __init__(self, interval, function, args=[], kwargs={}):
	"""
	Runs the function at a specified interval with given arguments.
	"""
	self.interval = interval

	Decoding the data in /proc/net/tcp:

	Linux 5.x /proc/net/tcp
	Linux 6.x /proc/PID/net/tcp

	Given a socket:

	$ ls -l /proc/24784/fd/11
	lrwx------ 1 jkstill dba 64 Dec 4 16:22 /proc/24784/fd/11 -> socket:[15907701]

	from scapy.all import *
	import time

	ip = IP(dst='127.0.0.127', src='10.99.99.99')
	udp = UDP(sport=321,dport=123)
	payload = '\x01\x0f'
	packet = ip/udp/payload
	send(packet)

	while(True):