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uv: The Modern Python Package Manager
uv is a next-generation tool for managing Python dependencies. Written in Rust by Astral, it...
System Prompts: Defining the Model's Role
A system prompt is a hidden instruction for the model set by the developer. The...
environs: Typed Environment Variables
environs is a library for reading environment variables from a .env file with type support....
rich: Beautiful Terminal Output
rich is a Python library for formatted terminal output. Colors, tables, panels, markdown, progress bars,...
Tokens in LLMs: How the Model Sees Text
When you send a request to a language model, it doesn't see words or letters....
The datetime Module: Working with Dates and Times
datetime is Python's standard module for working with dates and times. It's part of the...
.env Files and Environment Variables: Keeping Secrets Out of Code
Imagine you wrote a program with an API key hardcoded in the source and pushed...
Python Virtual Environments: Why and How
When you start a second Python project and run pip install requests β that library...
argparse: Command-Line Arguments in Python
When a script grows from a toy into a real tool, input() becomes inconvenient. Professional...
Generators in Python: Lazy Evaluation and Streaming
When an API returns a large response β text spanning thousands of tokens β waiting...
Layers and Caching in Docker
Every instruction in a Dockerfile creates a layer β an intermediate image. Docker caches layers...
Docker Hub β Image Registry
Docker Hub is the public Docker image registry. Think of it as npm for Node.js...
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