Onel Harrison

Deploying Containerized AWS Lambda functions with Terraform

In this article, I demonstrate how to deploy containerized AWS Lambda functions using Terraform.

Adopting GitHub Actions

More than just a continuous integration tool!

Exporting Snowflake Query Results

How to download data from Snowflake

Simple AWS Lambda Deployment with Terraform

Deployment and change management of AWS Lambda functions and their associated resources using an IaC tool like Terraform

Functional Programming in Python

Essential concepts, patterns, and modules

6 Tips for Working with AWS Lambda

Write and deploy AWS Lambda functions with more confidence

Machine Learning Visualization with Yellowbrick

Visually explore, tune, and select machine learning models

Grokking Time Travel in Snowflake

An overview of Time Travel, Snowflake’s feature that enables temporal data access, and highlight some affordances of the feature.

Snowflake Backups To Amazon S3 Using Terraform

Snowflake offers multiple layers of native data recovery features such as Time Travel and Fail Safe, which allow querying data up to 90…

A Python Recipe for Generating Subsets

I recently found myself needing to generate subsets of collections. In one situation I needed to generate all combinations of possibly…

Bug Hunt #1: Orphaned Amazon S3 event notifications for AWS Lambda functions

Over the past few weeks, I have spun up and torn down my fair share of AWS Lambdas using Terraform — these are some bugs I found.

Watch: Comprehensions in Python

An elegant syntax for building collections

Watch: Building a Reverse Polish Notation (RPN) Evaluator in Python

Learn how to build a stack-based evaluator for reverse polish notation expressions using Python

Watch: Demystifying __init__(self, …) in Python

Maybe you’ve been writing classes and creating objects in Python but never really thought about what the __init__ method was doing or what…

Watch: Data Structures, Stacks, and Queues in Python

Data structures organize data in ways that make it efficient for their data to be accessed in particular ways by placing constraints on how…

Watch: Creating State Diagrams using PlantUML

A domain-specific language for UML diagrams and more

Watch: Set Basics in Python

In this video, I discuss Python’s native Set data structure, its frequently used methods, and situations in which its use is appropriate…

Watch: Inspecting Image Metadata using Python’s Pillow Library

I am learning image processing techniques to build an AI agent that can solve Raven’s Progressive Matrices test. Python is my language of…

Getting Started With Redis: A Python Tutorial

Explore the concepts and build a library

A Few Great Resources for International Students in the U.S.

I arrived in the United States (U.S.) several years ago to pursue an undergraduate education as an international student . There is a lot…

How to mute the Windows Terminal bell 🔕

One of the issues I have with Windows Terminal is the annoying sound that gets triggered when I hit a text or navigation boundary…

Reading and writing files to/from Amazon S3 with Pandas

Using the boto3 library and s3fs- supported pandas APIs

4 Cute Python Functions for Working with Dirty Data

These functions do a lot of heavy lifting

Improving Code Quality in Python Codebases

A living guide to improving code quality in Python codebases

Watch: Xmeters — Taskbar System Stats for Windows

Showing off a neat piece of software for displaying system stats in the Windows Taskbar called Xmeters