Working with Dates and Times in Python
Learn to create Python dates and date-time values, calculate due dates with timedelta, format readable output, and build a simple appointment schedule.
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How to Create an ECR Repository and Push a Docker Image with AWS CLI
Use AWS CLI and Docker to create an Amazon ECR repository, publish tagged container images, and confirm that they were stored successfully.
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Terraform Resource Dependencies and Lifecycle Rules
Understand Terraform’s dependency graph and apply lifecycle rules to protect production resources, reduce replacement downtime, and manage intentional external changes.
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How to Use Case Statements in Bash
Learn Bash case statement syntax, pattern matching, default branches, and nested examples through an environment-based deployment script.
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SQL DISTINCT and NULL Values: Finding Unique and Missing Data
Understand how SQL DISTINCT handles duplicate and NULL values, with practical examples using IS NULL, IS NOT NULL, and CASE.
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Python Modules and Imports: Organize Reusable Code
Learn how Python modules and imports help you split programs into reusable files with beginner-friendly validation and utility examples.
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AWS CLI Lambda Commands: Deploy, Invoke, Inspect, and Update Functions
Use the AWS CLI to deploy and test a Python Lambda function, inspect its settings, and update code, memory, timeout, and environment variables.
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Using Terraform Data Sources to Deploy into an Existing AWS VPC
Use Terraform data sources to discover existing AWS networking resources and deploy EC2 instances or load balancers into the correct VPC.
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SQL Transactions: Using COMMIT and ROLLBACK
Learn to group related SQL updates into a single transaction and decide when to permanently save changes with COMMIT or undo them with ROLLBACK.
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Python Virtual Environments: Install Packages with pip
Set up an isolated Python project with venv and pip. Install Flask, record dependencies in requirements.txt, and run a simple local web application.
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