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Automation & scripting

CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.

3 matches

How to Build a Docker Image Tag Script in Python

Generate consistent Docker image tags from service names and versions with automatic normalization.

#!/usr/bin/env python3
"""Mock script for building docker image tags."""


def build_tag(service_name: str, version: str, registry: str = "docker.io") -> str:
    """Construct a docker image tag."""
    safe_name = service_name.lower().replace("_", "-")
    return f"{registry}/{safe_name}:{version}"


if __name__ == "…

12 0 Open

Automation & scripting easy

How to Generate an Inventory CSV of Installed pip Packages in Python

This script uses subprocess and csv to list all installed pip packages and write their names and versions into a CSV inventory file.

pip csv subprocess

Python

import subprocess
import csv

def get_installed_packages():
    """Return a list of (name, version) tuples for installed pip packages."""
    result = subprocess.run(
        ["pip", "list", "--format=freeze"],
        capture_output=True,
        text=True,
        check=True
    )
    packages = []
    for line in r…

14 0 Open

Automation & scripting easy

Pin Python package versions in requirements.txt

Pin package versions in requirements.txt-style text by adding ==version when no specifier is present, while preserving existing version constraints and comments.

requirements automation versions

Python

import re
from pathlib import Path


def pin_versions(requirements_text: str) -> str:
    """
    Pin package versions in requirements.txt-style text.
    Adds ==version if no version specifier is present.
    Keeps existing specifiers (>=, <=, ~=, etc.) unchanged.
    """
    lines = requirements_text.strip().splitli…

14 0 Open

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