Pyland
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Python Virtual Environments: Why and How
When you start a second Python project and run pip install requests — that library gets installed globally, for the...
argparse: Command-Line Arguments in Python
When a script grows from a toy into a real tool, input() becomes inconvenient. Professional CLI programs accept arguments at...
Generators in Python: Lazy Evaluation and Streaming
When an API returns a large response — text spanning thousands of tokens — waiting for the full response is...
Layers and Caching in Docker
Every instruction in a Dockerfile creates a layer — an intermediate image. Docker caches layers and reuses them on subsequent...
Docker Hub — Image Registry
Docker Hub is the public Docker image registry. Think of it as npm for Node.js or PyPI for Python, but...
Docker Compose: Multi-Container Applications
Docker Compose is a tool for running multiple related containers as a single application. The configuration is defined in a...
Installing Docker: macOS, Windows, Linux
Download Docker Desktop from docker.com/products/docker-desktop.
Dockerfile: Building Your Own Images
Dockerfile — a text file with instructions for building an image. Each instruction becomes a layer.
Basic Docker Commands
bash docker images list downloaded images docker pull nginx pull an image docker rmi nginx remove an image docker image...
Docker Volumes: Persisting Data
By default, data inside a container is not persisted — delete the container and the data is gone. Volumes solve...
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Author's article distribution by topics
Python
40 articles
Git и GitHub
31 articles
API
9 articles
Docker
8 articles
LLM и AI
7 articles