Maria Campbell interglobalmedia

The Authoritative Playbook for `uv` in Production Teams

This guide is the complete, canonical workflow for managing Python project dependencies using uv. It provides a clear, two-mode approach, production-ready best practices, and drop-in templates to ensure reproducibility, security, and developer efficiency across teams.

Core Concept: The Two Modes of `uv`

uv operates in two distinct modes. Your team should choose one and use it consistently.

Project Mode (Recommended): This is the modern, preferred approach. It's managed by commands like uv add, uv lock, and uv sync, using the cross-platform uv.lock file as the single source of truth for reproducibility.
Requirements Mode (Compatibility): This mode mirrors the classic pip-tools workflow and is useful when you need a requirements.txt file for legacy tools or specific deployment platforms.

lsof / netstat on macos

lsof - list open files

display (list) all open TCP+UDP ports and grep for listening ones

sudo lsof -i -P | grep LISTEN

COMMAND     PID           USER   FD   TYPE             DEVICE SIZE/OFF   NODE NAME
launchd       1           root   11u  IPv6 0x26dd73cb700390df      0t0    TCP *:22 (LISTEN)
....

Deploy Node.js Application to DigitalOcean

This step by step tutorial will show you how to set up a Node.js server with MongoDB to DigitalOcean using PM2, NGINX as reverse proxy and a SSL from LetsEncrypt. We will also add a custom domain name.

Prerequisites

Download PuTTY & PuTTYgen
Download WinSCP
Have your application on a GitHub repo.

Create Droplet & Generate SSH Key

Set up macOS Catalina 10.15

Contents:

1 git
2 Homebrew
3 rbenv
4 ruby
5 bundler
6 Atom

I am assuming you are here because like me, you installed a bazillion different python interpreters on mac and the whole thing is a spagetti. Today, I finally fixed my python installation. Whatever I install for python2 or python3 using pip JUST.WORKS.. My god! finally.

What the hell?

Here is what I had messed up, which you also probably did:

I had too many different python interpreters
Too many different symlinks which I lost track of
almost no package I installed with pip worked without a headache
any attempt to fix using online resources made it worse.

	import React from 'react';
	import ReactMarkdown from 'react-markdown';
	import { withStyles } from '@material-ui/core/styles';
	import Typography from '@material-ui/core/Typography';
	import Link from '@material-ui/core/Link';
	import Table from "@material-ui/core/Table";
	import TableContainer from "@material-ui/core/TableContainer";
	import Paper from "@material-ui/core/Paper";
	import {TableHead, TableRow, TableCell, TableBody} from "@material-ui/core";

	<ul>
	<li>
	<a href="https://twitter.com/share?text=TITLE OF YOUR POST via @YOUR_USERNAME&url=HTTPS://YOUR_WEBSITE.COM" onclick="window.open(this.href, 'twitter-share', 'width=550,height=235'); return false;">
	Share on Twitter
	</a>
	</li>
	<li>
	<a href="https://news.ycombinator.com/submitlink?u=HTTP://YOUR_URL.COM&t=YOUR CONTENT" onclick="window.open(this.href, 'hn-share', 'width=550,height=350'); return false;">
	Share on Hacker News
	</a>

	#!/usr/bin/env bash

	# To fix the " gpg: WARNING: unsafe permissions on homedir '/home/path/to/user/.gnupg' " error
	# Make sure that the .gnupg directory and its contents is accessibile by your user.
	chown -R $(whoami) ~/.gnupg/

	# Also correct the permissions and access rights on the directory
	chmod 600 ~/.gnupg/*
	chmod 700 ~/.gnupg

	// NOTE: time string must look like this 07:05:45PM or this 07:05:45AM and account for 12:00:00AM and convert 12:00:00pm to 12:00:00
	function timeConversion(s) {
	const ampm = s.slice(-2);
	const hours = Number(s.slice(0, 2));
	let time = s.slice(0, -2);
	if (ampm === 'AM') {
	if (hours === 12) { // 12am edge-case
	return time.replace(s.slice(0, 2), '00');
	}
	return time;

	# Purge the Heroku Build Cache using the terminal. This requires a new deployment FYI.
	# Replace appname with name of application on Heroku.

	heroku plugins:install heroku-repo
	heroku repo:purge_cache -a appname
	git commit --allow-empty -m "Purge cache"
	git push heroku master